Hydrophobication and characterisation of O-acetyl-galactoglucomannan for papermaking and barrier applications

被引：23

作者：

Kisonen, Victor ^{[1
]}

Eklund, Patrik ^{[2
]}

Auer, Markku ^{[1
]}

Sjoholm, Rainer ^{[2
]}

Pranovich, Andrey ^{[1
]}

Hemming, Jarl ^{[1
]}

Sundberg, Anna ^{[1
]}

Aseyev, Vladimir ^{[3
]}

Willfor, Stefan ^{[1
]}

机构：

[1] Abo Akad Univ, Proc Chem Ctr, Lab Wood & Paper Chem, Turku, Finland

[2] Abo Akad Univ, Proc Chem Ctr, Organ Chem Lab, Turku, Finland

[3] Univ Helsinki, Dept Chem, Polymer Chem Lab, SF-00100 Helsinki, Finland

来源：

CARBOHYDRATE RESEARCH | 2012年 / 352卷

基金：

芬兰科学院;

关键词：

Galactoglucomannan; Hemicellulose; Esterification; Hydrophobication; dn/dc; Molar mass; SPRUCE WOOD; HEMICELLULOSES; FILMS;

D O I：

10.1016/j.carres.2012.01.005

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Norway spruce O-acetyl-galactoglucomannans (GGM) are water-soluble hemicelluloses that have potential to be produced in large scale as a side product of the mechanical pulping industry or by hot-water extraction of wood. Chemical modification is often needed to tailor such water-soluble polysaccharides into industrially valuable compounds. In this work, treatment of GGM with butyric and benzoic anhydride in pyridine/dimethylformamide rendered GGM derivatives, which were hydrophobic and partially soluble in organic solvents. The degree of substitution can be adjusted by varying the quantity of the reagent and reaction temperature. The dn/dc value for the benzoyl ester of GGM was determined in 0.05 M LiBr DMSO in order to obtain accurate molar mass analysis with SEC-MALLS-RI. Novel substances with adjusted hydrophobicity can thus be prepared on one step synthesis from natural hemicelluloses, which then showed a slight increase in the molar mass upon esterification. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：151 / 158

页数：8

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