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 . .