TY  - JOUR
AU  - Khaliliyan, Hajar
AU  - Lin, Justine
AU  - Jusner, Paul
AU  - Schiehser, Sonja
AU  - Bacher, Markus
AU  - Kostić, Mirjana
AU  - Rosenau, Thomas
AU  - Potthast, Antje
AU  - Böhmdorfer, Stefan
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6986
AB  - Hemicellulose and pectin are noteworthy components of historical European rag papers, and have not been studied in detail so far. Rag papers were made from used textiles, and fiber-based utilities, such as ropes and bags. These had been prepared until the mid-19th century from plant-based fibers. Their polysaccharide composition could relate to their condition and history. This information can be expected to hold importance for the preservation and conservation of historical objects. We investigated a collection of rag papers of different age for their composition of non-cellulosic polysaccharides, and compared the findings with modern rag papers and wood pulps. Furthermore, a non-destructive determination of the hemicellulose and pectin content by near-infrared spectroscopy was developed. Historical rag papers had a lower hemicellulose/pectin content than pulps; the fractions of rhamnose, galactose, and arabinose were higher, while xylose was lower. In modern rag papers, xylose tended to be at the higher end of the range, which suggests a degradation of hemicelluloses/pectin over time or a change in raw materials and manufacturing. Rag papers also showed higher crystallinity than wood pulp papers. These findings provide insights into rag paper characteristics and offer potential classification methods.
PB  - Elsevier Ltd.
T2  - Carbohydrate Polymers
T1  - Profiling of historical rag papers by their non-cellulosic polysaccharide composition
SP  - 121611
VL  - 326
DO  - 10.1016/j.carbpol.2023.121611
ER  - 

@article{
author = "Khaliliyan, Hajar and Lin, Justine and Jusner, Paul and Schiehser, Sonja and Bacher, Markus and Kostić, Mirjana and Rosenau, Thomas and Potthast, Antje and Böhmdorfer, Stefan",
year = "2024",
abstract = "Hemicellulose and pectin are noteworthy components of historical European rag papers, and have not been studied in detail so far. Rag papers were made from used textiles, and fiber-based utilities, such as ropes and bags. These had been prepared until the mid-19th century from plant-based fibers. Their polysaccharide composition could relate to their condition and history. This information can be expected to hold importance for the preservation and conservation of historical objects. We investigated a collection of rag papers of different age for their composition of non-cellulosic polysaccharides, and compared the findings with modern rag papers and wood pulps. Furthermore, a non-destructive determination of the hemicellulose and pectin content by near-infrared spectroscopy was developed. Historical rag papers had a lower hemicellulose/pectin content than pulps; the fractions of rhamnose, galactose, and arabinose were higher, while xylose was lower. In modern rag papers, xylose tended to be at the higher end of the range, which suggests a degradation of hemicelluloses/pectin over time or a change in raw materials and manufacturing. Rag papers also showed higher crystallinity than wood pulp papers. These findings provide insights into rag paper characteristics and offer potential classification methods.",
publisher = "Elsevier Ltd.",
journal = "Carbohydrate Polymers",
title = "Profiling of historical rag papers by their non-cellulosic polysaccharide composition",
pages = "121611",
volume = "326",
doi = "10.1016/j.carbpol.2023.121611"
}

Khaliliyan, H., Lin, J., Jusner, P., Schiehser, S., Bacher, M., Kostić, M., Rosenau, T., Potthast, A.,& Böhmdorfer, S.. (2024). Profiling of historical rag papers by their non-cellulosic polysaccharide composition. in Carbohydrate Polymers
Elsevier Ltd.., 326, 121611.
https://doi.org/10.1016/j.carbpol.2023.121611

Khaliliyan H, Lin J, Jusner P, Schiehser S, Bacher M, Kostić M, Rosenau T, Potthast A, Böhmdorfer S. Profiling of historical rag papers by their non-cellulosic polysaccharide composition. in Carbohydrate Polymers. 2024;326:121611.
doi:10.1016/j.carbpol.2023.121611 .

Khaliliyan, Hajar, Lin, Justine, Jusner, Paul, Schiehser, Sonja, Bacher, Markus, Kostić, Mirjana, Rosenau, Thomas, Potthast, Antje, Böhmdorfer, Stefan, "Profiling of historical rag papers by their non-cellulosic polysaccharide composition" in Carbohydrate Polymers, 326 (2024):121611,
https://doi.org/10.1016/j.carbpol.2023.121611 . .

TY  - JOUR
AU  - Potthast, Antje
AU  - Ahn, Kyujin
AU  - Becker, Manuel
AU  - Eichinger, Thomas
AU  - Kostić, Mirjana
AU  - Böhmdorfer, Stefan
AU  - Jeong, Myung Joon
AU  - Rosenau, Thomas
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5101
AB  - Gaseous acetic acid is formed under conditions of storage of historic paper objects. Its presence not only promotes hydrolytic cleavage of cellulose, but also causes acetylation of the cellulosic material to very small degree. The acetylation reaction proceeds under ambient conditions and without catalyst. Different analytical methods were used to prove the presence of organic acetates on cellulosic paper matrices. DESI-MS in combination with 2H-isotopic labeling showed the presence of sugar fragments with different acetylation patterns. A method based on Zemplen saponification was applied and worked also in the presence of a large excess of acetic acid and/or inorganic acetates. The acetylation effect was quantified for model papers and original, naturally aged paper samples. While cellulose acetylation was clearly proven to be another general pathway of paper aging, further studies of this acetylation phenomenon are needed with regard to conservational aspects and suitable paper storage conditions.
PB  - Elsevier Ltd
T2  - Carbohydrate Polymers
T1  - Acetylation of cellulose – Another pathway of natural cellulose aging during library storage of books and papers
SP  - 119323
VL  - 287
DO  - 10.1016/j.carbpol.2022.119323
ER  - 

@article{
author = "Potthast, Antje and Ahn, Kyujin and Becker, Manuel and Eichinger, Thomas and Kostić, Mirjana and Böhmdorfer, Stefan and Jeong, Myung Joon and Rosenau, Thomas",
year = "2022",
abstract = "Gaseous acetic acid is formed under conditions of storage of historic paper objects. Its presence not only promotes hydrolytic cleavage of cellulose, but also causes acetylation of the cellulosic material to very small degree. The acetylation reaction proceeds under ambient conditions and without catalyst. Different analytical methods were used to prove the presence of organic acetates on cellulosic paper matrices. DESI-MS in combination with 2H-isotopic labeling showed the presence of sugar fragments with different acetylation patterns. A method based on Zemplen saponification was applied and worked also in the presence of a large excess of acetic acid and/or inorganic acetates. The acetylation effect was quantified for model papers and original, naturally aged paper samples. While cellulose acetylation was clearly proven to be another general pathway of paper aging, further studies of this acetylation phenomenon are needed with regard to conservational aspects and suitable paper storage conditions.",
publisher = "Elsevier Ltd",
journal = "Carbohydrate Polymers",
title = "Acetylation of cellulose – Another pathway of natural cellulose aging during library storage of books and papers",
pages = "119323",
volume = "287",
doi = "10.1016/j.carbpol.2022.119323"
}

Potthast, A., Ahn, K., Becker, M., Eichinger, T., Kostić, M., Böhmdorfer, S., Jeong, M. J.,& Rosenau, T.. (2022). Acetylation of cellulose – Another pathway of natural cellulose aging during library storage of books and papers. in Carbohydrate Polymers
Elsevier Ltd., 287, 119323.
https://doi.org/10.1016/j.carbpol.2022.119323

Potthast A, Ahn K, Becker M, Eichinger T, Kostić M, Böhmdorfer S, Jeong MJ, Rosenau T. Acetylation of cellulose – Another pathway of natural cellulose aging during library storage of books and papers. in Carbohydrate Polymers. 2022;287:119323.
doi:10.1016/j.carbpol.2022.119323 .

Potthast, Antje, Ahn, Kyujin, Becker, Manuel, Eichinger, Thomas, Kostić, Mirjana, Böhmdorfer, Stefan, Jeong, Myung Joon, Rosenau, Thomas, "Acetylation of cellulose – Another pathway of natural cellulose aging during library storage of books and papers" in Carbohydrate Polymers, 287 (2022):119323,
https://doi.org/10.1016/j.carbpol.2022.119323 . .

TY  - JOUR
AU  - Sulaeva, Irina
AU  - Hettegger, Hubert
AU  - Bergen, Anna
AU  - Rohrer, Christian
AU  - Kostić, Mirjana
AU  - Konnerth, Johannes
AU  - Rosenau, Thomas
AU  - Potthast, Antje
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4467
AB  - Bacterial cellulose (BC) hydrogels are among the most efficient materials already being used for the treatment of complex wounds. The moist environment provided by the BC dressing is a key feature assuring efficient wound recovery. Improving the dressings' moisture-holding ability facilitates its application and leads to an economically preferable extended wear time. To produce materials with reduced moisture loss, BC dressings were impregnated with a secondary hydrophilic component: alginate. The feasibility of an industrial fabrication of this composite was evaluated on pilot scale equipment. It was shown that the procedure can easily be scaled up without significantly increasing the manufacturing time. The resultant composite possessed improved water-retention properties, providing a smooth dressing exchange as demonstrated by a wound-imitating model. The new materials were moreover shown to be compatible with an antimicrobially active compound, which assures their efficiency in the treatment of highly colonized wounds.
PB  - Elsevier, Amsterdam
T2  - Materials Science & Engineering C-Materials for Biological Applications
T1  - Fabrication of bacterial cellulose-based wound dressings with improved performance by impregnation with alginate
VL  - 110
DO  - 10.1016/j.msec.2019.110619
ER  - 

@article{
author = "Sulaeva, Irina and Hettegger, Hubert and Bergen, Anna and Rohrer, Christian and Kostić, Mirjana and Konnerth, Johannes and Rosenau, Thomas and Potthast, Antje",
year = "2020",
abstract = "Bacterial cellulose (BC) hydrogels are among the most efficient materials already being used for the treatment of complex wounds. The moist environment provided by the BC dressing is a key feature assuring efficient wound recovery. Improving the dressings' moisture-holding ability facilitates its application and leads to an economically preferable extended wear time. To produce materials with reduced moisture loss, BC dressings were impregnated with a secondary hydrophilic component: alginate. The feasibility of an industrial fabrication of this composite was evaluated on pilot scale equipment. It was shown that the procedure can easily be scaled up without significantly increasing the manufacturing time. The resultant composite possessed improved water-retention properties, providing a smooth dressing exchange as demonstrated by a wound-imitating model. The new materials were moreover shown to be compatible with an antimicrobially active compound, which assures their efficiency in the treatment of highly colonized wounds.",
publisher = "Elsevier, Amsterdam",
journal = "Materials Science & Engineering C-Materials for Biological Applications",
title = "Fabrication of bacterial cellulose-based wound dressings with improved performance by impregnation with alginate",
volume = "110",
doi = "10.1016/j.msec.2019.110619"
}

Sulaeva, I., Hettegger, H., Bergen, A., Rohrer, C., Kostić, M., Konnerth, J., Rosenau, T.,& Potthast, A.. (2020). Fabrication of bacterial cellulose-based wound dressings with improved performance by impregnation with alginate. in Materials Science & Engineering C-Materials for Biological Applications
Elsevier, Amsterdam., 110.
https://doi.org/10.1016/j.msec.2019.110619

Sulaeva I, Hettegger H, Bergen A, Rohrer C, Kostić M, Konnerth J, Rosenau T, Potthast A. Fabrication of bacterial cellulose-based wound dressings with improved performance by impregnation with alginate. in Materials Science & Engineering C-Materials for Biological Applications. 2020;110.
doi:10.1016/j.msec.2019.110619 .

Sulaeva, Irina, Hettegger, Hubert, Bergen, Anna, Rohrer, Christian, Kostić, Mirjana, Konnerth, Johannes, Rosenau, Thomas, Potthast, Antje, "Fabrication of bacterial cellulose-based wound dressings with improved performance by impregnation with alginate" in Materials Science & Engineering C-Materials for Biological Applications, 110 (2020),
https://doi.org/10.1016/j.msec.2019.110619 . .

TY  - JOUR
AU  - Stefanović, Bojan
AU  - Kostić, Mirjana
AU  - Bacher, Markus
AU  - Rosenau, Thomas
AU  - Potthast, Antje
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2784
AB  - The effect of different aqueous emulsions of vegetable oils on the wrinkle recovery properties of 100% cotton fabric was investigated. Six vegetable oils (rapeseed oil, olive oil, coconut oil, safflower oil, linseed oil and modified sunflower oil) with different fatty acid profiles were used. The results prove that the fatty acid profile is an important factor affecting the wrinkle recovery properties of treated cotton fabrics. In general, higher concentrations of the active agent (vegetable oil) provide better wrinkle properties for treated cotton fabrics. The results suggest that better recovery from wrinkle deformation is due to the formation of a micro-film around the fibers and yarns that reduces the friction coefficient. For analysis that better monitors the complex process of fiber relaxation after deformation, an optical wrinkle tester based on grazing light analysis was developed. The technique allows more precise scanning of textile surfaces and measuring of small increments of wrinkle recovery after a spray treatment, for example. The optical wrinkle tester offers the possibility of time-dependent measurements to follow the kinetics of wrinkle relaxation and, for the first time, gives access to kinetic profiles of fiber relaxation.
PB  - Sage Publications Ltd, London
T2  - Textile Research Journal
T1  - Vegetable oils in textile finishing applications: the action mode of wrinkle-reduction sprays and means for analyzing their performance
EP  - 460
IS  - 5
SP  - 449
VL  - 84
DO  - 10.1177/0040517513495946
ER  - 

@article{
author = "Stefanović, Bojan and Kostić, Mirjana and Bacher, Markus and Rosenau, Thomas and Potthast, Antje",
year = "2014",
abstract = "The effect of different aqueous emulsions of vegetable oils on the wrinkle recovery properties of 100% cotton fabric was investigated. Six vegetable oils (rapeseed oil, olive oil, coconut oil, safflower oil, linseed oil and modified sunflower oil) with different fatty acid profiles were used. The results prove that the fatty acid profile is an important factor affecting the wrinkle recovery properties of treated cotton fabrics. In general, higher concentrations of the active agent (vegetable oil) provide better wrinkle properties for treated cotton fabrics. The results suggest that better recovery from wrinkle deformation is due to the formation of a micro-film around the fibers and yarns that reduces the friction coefficient. For analysis that better monitors the complex process of fiber relaxation after deformation, an optical wrinkle tester based on grazing light analysis was developed. The technique allows more precise scanning of textile surfaces and measuring of small increments of wrinkle recovery after a spray treatment, for example. The optical wrinkle tester offers the possibility of time-dependent measurements to follow the kinetics of wrinkle relaxation and, for the first time, gives access to kinetic profiles of fiber relaxation.",
publisher = "Sage Publications Ltd, London",
journal = "Textile Research Journal",
title = "Vegetable oils in textile finishing applications: the action mode of wrinkle-reduction sprays and means for analyzing their performance",
pages = "460-449",
number = "5",
volume = "84",
doi = "10.1177/0040517513495946"
}

Stefanović, B., Kostić, M., Bacher, M., Rosenau, T.,& Potthast, A.. (2014). Vegetable oils in textile finishing applications: the action mode of wrinkle-reduction sprays and means for analyzing their performance. in Textile Research Journal
Sage Publications Ltd, London., 84(5), 449-460.
https://doi.org/10.1177/0040517513495946

Stefanović B, Kostić M, Bacher M, Rosenau T, Potthast A. Vegetable oils in textile finishing applications: the action mode of wrinkle-reduction sprays and means for analyzing their performance. in Textile Research Journal. 2014;84(5):449-460.
doi:10.1177/0040517513495946 .

Stefanović, Bojan, Kostić, Mirjana, Bacher, Markus, Rosenau, Thomas, Potthast, Antje, "Vegetable oils in textile finishing applications: the action mode of wrinkle-reduction sprays and means for analyzing their performance" in Textile Research Journal, 84, no. 5 (2014):449-460,
https://doi.org/10.1177/0040517513495946 . .

TY  - JOUR
AU  - Henniges, Ute
AU  - Kostić, Mirjana
AU  - Borgards, Andrea
AU  - Rosenau, Thomas
AU  - Potthast, Antje
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1921
AB  - Celluloses from different origins were dissolved stepwise in N,N-dimethylacetamide/lithium chloride (9% v/w; DMAc/LiCl) with the aim to study the time course of the dissolution process, Completeness of dissolution in the dissolved fractions, possible discrimination effects, and differences between the celluloses. Cellulosic pulps from both annual plants and different wood species were analyzed. The obtained fractions were subject to gel permeation chromatography (GPC) with multiple detection to monitor the development of molecular mass distribution (MMD), molecular mass, and recovered mass. The dissolution behavior of accompanying xylans was followed by quantitative analysis of the uronic acids by fluorescence. labeling - GPC. The morphological changes at the remaining fibers in the stepwise dissolution were addressed by SEM. The time needed to dissolve completely the cellulosic pulp differed from species to species, mainly, between pulps from annual plants and pulps from wood. Annual plants generally needed much longer to dissolve completely. In the beginning of the dissolution, the dissolved fractions of annual plants showed a distinct discrimination effect because they were enriched in hemicellulose. By contrast, wood pulps dissolve fast and without distinct changes in the MMD of the dissolved fractions over time. Bagasse pulp is an exception the observation for annual plants and rather resembled the behavior of wood celluloses. Prolonged dissolution times, as often practiced in Cellulose GPC, do not lead to any improvements regarding the determination of molecular mass, MMD, and recovered, Mass of injected sample, so that the dissolution times required for reliable GPC analysis can be significantly shortened, which will he important for biorefinery analytics with high numbers of samples
PB  - Amer Chemical Soc, Washington
T2  - Biomacromolecules
T1  - Dissolution Behavior of Different Celluloses
EP  - 879
IS  - 4
SP  - 871
VL  - 12
DO  - 10.1021/bm101555q
ER  - 

@article{
author = "Henniges, Ute and Kostić, Mirjana and Borgards, Andrea and Rosenau, Thomas and Potthast, Antje",
year = "2011",
abstract = "Celluloses from different origins were dissolved stepwise in N,N-dimethylacetamide/lithium chloride (9% v/w; DMAc/LiCl) with the aim to study the time course of the dissolution process, Completeness of dissolution in the dissolved fractions, possible discrimination effects, and differences between the celluloses. Cellulosic pulps from both annual plants and different wood species were analyzed. The obtained fractions were subject to gel permeation chromatography (GPC) with multiple detection to monitor the development of molecular mass distribution (MMD), molecular mass, and recovered mass. The dissolution behavior of accompanying xylans was followed by quantitative analysis of the uronic acids by fluorescence. labeling - GPC. The morphological changes at the remaining fibers in the stepwise dissolution were addressed by SEM. The time needed to dissolve completely the cellulosic pulp differed from species to species, mainly, between pulps from annual plants and pulps from wood. Annual plants generally needed much longer to dissolve completely. In the beginning of the dissolution, the dissolved fractions of annual plants showed a distinct discrimination effect because they were enriched in hemicellulose. By contrast, wood pulps dissolve fast and without distinct changes in the MMD of the dissolved fractions over time. Bagasse pulp is an exception the observation for annual plants and rather resembled the behavior of wood celluloses. Prolonged dissolution times, as often practiced in Cellulose GPC, do not lead to any improvements regarding the determination of molecular mass, MMD, and recovered, Mass of injected sample, so that the dissolution times required for reliable GPC analysis can be significantly shortened, which will he important for biorefinery analytics with high numbers of samples",
publisher = "Amer Chemical Soc, Washington",
journal = "Biomacromolecules",
title = "Dissolution Behavior of Different Celluloses",
pages = "879-871",
number = "4",
volume = "12",
doi = "10.1021/bm101555q"
}

Henniges, U., Kostić, M., Borgards, A., Rosenau, T.,& Potthast, A.. (2011). Dissolution Behavior of Different Celluloses. in Biomacromolecules
Amer Chemical Soc, Washington., 12(4), 871-879.
https://doi.org/10.1021/bm101555q

Henniges U, Kostić M, Borgards A, Rosenau T, Potthast A. Dissolution Behavior of Different Celluloses. in Biomacromolecules. 2011;12(4):871-879.
doi:10.1021/bm101555q .

Henniges, Ute, Kostić, Mirjana, Borgards, Andrea, Rosenau, Thomas, Potthast, Antje, "Dissolution Behavior of Different Celluloses" in Biomacromolecules, 12, no. 4 (2011):871-879,
https://doi.org/10.1021/bm101555q . .

TY  - JOUR
AU  - Potthast, Antje
AU  - Schiehser, Sonja
AU  - Rosenau, Thomas
AU  - Kostić, Mirjana
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1502
AB  - The conversion of cellulose to dialdehyde cellulose (DAC) by treatment with aqueous periodate was studied by the CCOA method, which is a combination of gel permeation chromatography and carbonyl-selective fluorescence labeling. The beta-alkoxy-elimination reaction under alkaline conditions was used as a diagnostic tool to address the regioselectivity of the oxidation at low degrees of conversion. The oxidation proceeded by random oxidant attack; cluster-like or isolated oxidation patterns were excluded. The beta-alkoxy-elimination proceeded as a competitive process during reduction of DAC by sodium borohydride. Reduction was thus inevitably accompanied by a significant loss in molecular weight. The borohydride treatment decompacted the molecules by reducing the aldehyde groups and destroying hemiacetal crosslinks. As a result, highly flexible chains were produced.
PB  - Walter de Gruyter & Co, Berlin
T2  - Holzforschung
T1  - Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions
EP  - 17
IS  - 1
SP  - 12
VL  - 63
DO  - 10.1515/HF.2009.108
ER  - 

@article{
author = "Potthast, Antje and Schiehser, Sonja and Rosenau, Thomas and Kostić, Mirjana",
year = "2009",
abstract = "The conversion of cellulose to dialdehyde cellulose (DAC) by treatment with aqueous periodate was studied by the CCOA method, which is a combination of gel permeation chromatography and carbonyl-selective fluorescence labeling. The beta-alkoxy-elimination reaction under alkaline conditions was used as a diagnostic tool to address the regioselectivity of the oxidation at low degrees of conversion. The oxidation proceeded by random oxidant attack; cluster-like or isolated oxidation patterns were excluded. The beta-alkoxy-elimination proceeded as a competitive process during reduction of DAC by sodium borohydride. Reduction was thus inevitably accompanied by a significant loss in molecular weight. The borohydride treatment decompacted the molecules by reducing the aldehyde groups and destroying hemiacetal crosslinks. As a result, highly flexible chains were produced.",
publisher = "Walter de Gruyter & Co, Berlin",
journal = "Holzforschung",
title = "Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions",
pages = "17-12",
number = "1",
volume = "63",
doi = "10.1515/HF.2009.108"
}

Potthast, A., Schiehser, S., Rosenau, T.,& Kostić, M.. (2009). Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions. in Holzforschung
Walter de Gruyter & Co, Berlin., 63(1), 12-17.
https://doi.org/10.1515/HF.2009.108

Potthast A, Schiehser S, Rosenau T, Kostić M. Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions. in Holzforschung. 2009;63(1):12-17.
doi:10.1515/HF.2009.108 .

Potthast, Antje, Schiehser, Sonja, Rosenau, Thomas, Kostić, Mirjana, "Oxidative modifications of cellulose in the periodate system - Reduction and beta-elimination reactions" in Holzforschung, 63, no. 1 (2009):12-17,
https://doi.org/10.1515/HF.2009.108 . .

TY  - JOUR
AU  - Potthast, Antje
AU  - Kostić, Mirjana
AU  - Schiehser, Sonja
AU  - Kosma, Paul
AU  - Rosenau, Thomas
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1145
AB  - The effects of periodate oxidation on cellulose were studied by means of gel permeation chromatography (GPC) using multiple detection and carbonyl-selective fluorescence labeling according to the CCOA methodology profiling of carbonyl groups. At low degrees of oxidation, the molecular weight distribution was fully maintained. Upon more pronounced oxidation the molecular weight even increased due to cross-linking effects. More condensed structures were identified by means of light scattering. Periodate oxidation also affects crystalline regions of cellulose, as demonstrated by comparison of homogeneous and heterogeneous carbonyl labeling. Highly ordered regions in cellulose were affected by oxidation even below an oxidation degree of 2%. Two different phases for the oxidation kinetics were identified in the early stages of periodate treatments.
PB  - Walter de Gruyter & Co, Berlin
T2  - Holzforschung
T1  - Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles
EP  - 667
IS  - 6
SP  - 662
VL  - 61
DO  - 10.1515/HF.2007.099
ER  - 

@article{
author = "Potthast, Antje and Kostić, Mirjana and Schiehser, Sonja and Kosma, Paul and Rosenau, Thomas",
year = "2007",
abstract = "The effects of periodate oxidation on cellulose were studied by means of gel permeation chromatography (GPC) using multiple detection and carbonyl-selective fluorescence labeling according to the CCOA methodology profiling of carbonyl groups. At low degrees of oxidation, the molecular weight distribution was fully maintained. Upon more pronounced oxidation the molecular weight even increased due to cross-linking effects. More condensed structures were identified by means of light scattering. Periodate oxidation also affects crystalline regions of cellulose, as demonstrated by comparison of homogeneous and heterogeneous carbonyl labeling. Highly ordered regions in cellulose were affected by oxidation even below an oxidation degree of 2%. Two different phases for the oxidation kinetics were identified in the early stages of periodate treatments.",
publisher = "Walter de Gruyter & Co, Berlin",
journal = "Holzforschung",
title = "Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles",
pages = "667-662",
number = "6",
volume = "61",
doi = "10.1515/HF.2007.099"
}

Potthast, A., Kostić, M., Schiehser, S., Kosma, P.,& Rosenau, T.. (2007). Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles. in Holzforschung
Walter de Gruyter & Co, Berlin., 61(6), 662-667.
https://doi.org/10.1515/HF.2007.099

Potthast A, Kostić M, Schiehser S, Kosma P, Rosenau T. Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles. in Holzforschung. 2007;61(6):662-667.
doi:10.1515/HF.2007.099 .

Potthast, Antje, Kostić, Mirjana, Schiehser, Sonja, Kosma, Paul, Rosenau, Thomas, "Studies on oxidative modifications of cellulose in the periodate system: Molecular weight distribution and carbonyl group profiles" in Holzforschung, 61, no. 6 (2007):662-667,
https://doi.org/10.1515/HF.2007.099 . .

TY  - JOUR
AU  - Kostić, Mirjana
AU  - Potthast, Antje
AU  - Rosenau, Thomas
AU  - Kosma, Paul
AU  - Sixta, Herbert
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/988
AB  - The CCOA method for profiling of carbonyl groups by fluorescence labeling has meanwhile become an established procedure for dissolving pulps and rag papers. High molecular weight pulps, such as certain paper pulps, could not be analyzed so far due to their limited solubility in DMAc/LiCl. The new approach presented in this paper is based on the heterogeneous carbonyl-selective fluorescence labeling with CCOA (2), which is subsequently released with triflic acid from the labeled pulp in a quantitative manner, and the concentration of CCOA and CCOA-derived products is determined by HPLC. The procedure requires material in the mg range only. Calibration was performed against DMAc/LiCl-soluble standard pulps. Comparison of the data obtained by the novel approach correlated well with data from the established CCOA procedure.
PB  - Springer, Dordrecht
T2  - Cellulose
T1  - A novel approach to determination of carbonyl groups in DMAc/LiCl-insoluble pulps by fluorescence labeling
EP  - 435
IS  - 4
SP  - 429
VL  - 13
DO  - 10.1007/s10570-005-9040-1
ER  - 

@article{
author = "Kostić, Mirjana and Potthast, Antje and Rosenau, Thomas and Kosma, Paul and Sixta, Herbert",
year = "2006",
abstract = "The CCOA method for profiling of carbonyl groups by fluorescence labeling has meanwhile become an established procedure for dissolving pulps and rag papers. High molecular weight pulps, such as certain paper pulps, could not be analyzed so far due to their limited solubility in DMAc/LiCl. The new approach presented in this paper is based on the heterogeneous carbonyl-selective fluorescence labeling with CCOA (2), which is subsequently released with triflic acid from the labeled pulp in a quantitative manner, and the concentration of CCOA and CCOA-derived products is determined by HPLC. The procedure requires material in the mg range only. Calibration was performed against DMAc/LiCl-soluble standard pulps. Comparison of the data obtained by the novel approach correlated well with data from the established CCOA procedure.",
publisher = "Springer, Dordrecht",
journal = "Cellulose",
title = "A novel approach to determination of carbonyl groups in DMAc/LiCl-insoluble pulps by fluorescence labeling",
pages = "435-429",
number = "4",
volume = "13",
doi = "10.1007/s10570-005-9040-1"
}

Kostić, M., Potthast, A., Rosenau, T., Kosma, P.,& Sixta, H.. (2006). A novel approach to determination of carbonyl groups in DMAc/LiCl-insoluble pulps by fluorescence labeling. in Cellulose
Springer, Dordrecht., 13(4), 429-435.
https://doi.org/10.1007/s10570-005-9040-1

Kostić M, Potthast A, Rosenau T, Kosma P, Sixta H. A novel approach to determination of carbonyl groups in DMAc/LiCl-insoluble pulps by fluorescence labeling. in Cellulose. 2006;13(4):429-435.
doi:10.1007/s10570-005-9040-1 .

Kostić, Mirjana, Potthast, Antje, Rosenau, Thomas, Kosma, Paul, Sixta, Herbert, "A novel approach to determination of carbonyl groups in DMAc/LiCl-insoluble pulps by fluorescence labeling" in Cellulose, 13, no. 4 (2006):429-435,
https://doi.org/10.1007/s10570-005-9040-1 . .