Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers
Само за регистроване кориснике
2013
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The effects of TEMPO-mediated oxidation, performed with NaClO, a catalytic amount of NaBr, and 2,2',6,6'-tetramethylpiperidine-1-oxy radical (TEMPO), were studied on lyocell fibers by means of GPC using multiple detection and group-selective fluorescence labeling according to the CCOA and FDAM methodology. The applied method determines functional group content as a sum parameter, as well as functional group profiles in relation to the molecular weight of the cellulose fibers. Both the CHO and COOH profiles, as well as molecular weight alterations, were analyzed. A significant decrease in the average molecular weight was obtained during the first hour of TEMPO-mediated oxidation, but prolonged oxidation time resulted in no strong additional chain scission. Significant amounts of COOH groups were introduced in the high molecular weight fractions by the oxidation with higher concentrations of NaClO (2.42-9.67 mmol NaClO/g fiber) after modification times of 1 h or longer.
Кључне речи:
TEMPO-mediated oxidation / Lyocell fibers / Gel permeation chromatography (GPC) / Molecular weight distribution (MWD) / Fluorescence labeling / Functional group profilesИзвор:
Carbohydrate Polymers, 2013, 98, 1, 444-450Издавач:
- Elsevier Sci Ltd, Oxford
Финансирање / пројекти:
- Функционализација, карактеризација и примена целулозе и деривата целулозе (RS-MESTD-Basic Research (BR or ON)-172029)
- COST ActionEuropean Cooperation in Science and Technology (COST) [FP 0901]
DOI: 10.1016/j.carbpol.2013.06.033
ISSN: 0144-8617
PubMed: 23987366
WoS: 000325835600057
Scopus: 2-s2.0-84885112449
Колекције
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Milanović, Jovana AU - Schiehser, Sonja AU - Milanović, Predrag AU - Potthast, Antje AU - Kostić, Mirjana PY - 2013 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2428 AB - The effects of TEMPO-mediated oxidation, performed with NaClO, a catalytic amount of NaBr, and 2,2',6,6'-tetramethylpiperidine-1-oxy radical (TEMPO), were studied on lyocell fibers by means of GPC using multiple detection and group-selective fluorescence labeling according to the CCOA and FDAM methodology. The applied method determines functional group content as a sum parameter, as well as functional group profiles in relation to the molecular weight of the cellulose fibers. Both the CHO and COOH profiles, as well as molecular weight alterations, were analyzed. A significant decrease in the average molecular weight was obtained during the first hour of TEMPO-mediated oxidation, but prolonged oxidation time resulted in no strong additional chain scission. Significant amounts of COOH groups were introduced in the high molecular weight fractions by the oxidation with higher concentrations of NaClO (2.42-9.67 mmol NaClO/g fiber) after modification times of 1 h or longer. PB - Elsevier Sci Ltd, Oxford T2 - Carbohydrate Polymers T1 - Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers EP - 450 IS - 1 SP - 444 VL - 98 DO - 10.1016/j.carbpol.2013.06.033 ER -
@article{ author = "Milanović, Jovana and Schiehser, Sonja and Milanović, Predrag and Potthast, Antje and Kostić, Mirjana", year = "2013", abstract = "The effects of TEMPO-mediated oxidation, performed with NaClO, a catalytic amount of NaBr, and 2,2',6,6'-tetramethylpiperidine-1-oxy radical (TEMPO), were studied on lyocell fibers by means of GPC using multiple detection and group-selective fluorescence labeling according to the CCOA and FDAM methodology. The applied method determines functional group content as a sum parameter, as well as functional group profiles in relation to the molecular weight of the cellulose fibers. Both the CHO and COOH profiles, as well as molecular weight alterations, were analyzed. A significant decrease in the average molecular weight was obtained during the first hour of TEMPO-mediated oxidation, but prolonged oxidation time resulted in no strong additional chain scission. Significant amounts of COOH groups were introduced in the high molecular weight fractions by the oxidation with higher concentrations of NaClO (2.42-9.67 mmol NaClO/g fiber) after modification times of 1 h or longer.", publisher = "Elsevier Sci Ltd, Oxford", journal = "Carbohydrate Polymers", title = "Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers", pages = "450-444", number = "1", volume = "98", doi = "10.1016/j.carbpol.2013.06.033" }
Milanović, J., Schiehser, S., Milanović, P., Potthast, A.,& Kostić, M.. (2013). Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers. in Carbohydrate Polymers Elsevier Sci Ltd, Oxford., 98(1), 444-450. https://doi.org/10.1016/j.carbpol.2013.06.033
Milanović J, Schiehser S, Milanović P, Potthast A, Kostić M. Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers. in Carbohydrate Polymers. 2013;98(1):444-450. doi:10.1016/j.carbpol.2013.06.033 .
Milanović, Jovana, Schiehser, Sonja, Milanović, Predrag, Potthast, Antje, Kostić, Mirjana, "Molecular weight distribution and functional group profiles of TEMPO-oxidized lyocell fibers" in Carbohydrate Polymers, 98, no. 1 (2013):444-450, https://doi.org/10.1016/j.carbpol.2013.06.033 . .