Dissolution Behavior of Different Celluloses
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
Source:
Biomacromolecules, 2011, 12, 4, 871-879Publisher:
- Amer Chemical Soc, Washington
DOI: 10.1021/bm101555q
ISSN: 1525-7797
PubMed: 21391580
WoS: 000289223500003
Scopus: 2-s2.0-79953886925
Institution/Community
Tehnološko-metalurški fakultetTY - 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 . .