Chemical modification of cellulosic fibers for better convertibility in packaging applications

被引：44

作者：

Vuoti, Sauli ^{[1
]}

Laatikainen, Elina ^{[2
]}

Heikkinen, Harri ^{[3
]}

Johansson, Leena-Sisko ^{[4
]}

Saharinen, Erkki ^{[3
]}

Retulainen, Elias ^{[2
]}

机构：

[1] VTT, Rajamaki 05201, Finland

[2] VTT Tech Res Ctr Finland, FI-40101 Jyvaskyla, Finland

[3] VTT, FI-02044 Espoo, Finland

[4] Aalto Univ, Sch Chem Technol, Dept Forest Prod Technol, FI-00076 Aalto, Finland

来源：

CARBOHYDRATE POLYMERS | 2013年 / 96卷 / 02期

关键词：

Cellulose modification; Transparent paper; Cellulose esterification; Paper elongation; Hydrophobicity; WOOD FIBERS; COMPOSITES; CARBOXYMETHYLATION; THERMOPLASTICS; FILLERS;

D O I：

10.1016/j.carbpol.2012.07.053

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Cellulose fiber has been modified by mechanical and chemical means in order to improve paper properties, which respond to moisture and temperature. When the cellulose is first refined and then etherified using hydroxypropylation under dry conditions, the paper sheets prepared from the hydroxypropylated cellulose show improved elongation. When the level of hydroxypropylation is high enough, the paper sheets also become transparent. Additionally, the effect of cellulose activation using different mechanical methods has been compared by esterification reactions. It is shown that removal of water is the most crucial step for the esterification reactions while other methods have a lesser impact. The paper sheets prepared from the esterified cellulose fibers show an increase in contact angles and high hydrophobicity. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：549 / 559

页数：11

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