All-Cellulose Composites by Partial Dissolution of Cotton Fibres

被引：19

作者：

Arevalo, Raquel ^{[1
,2
]}

Picot, Olivier T. ^{[1
,2
]}

Wilson, Rory M. ^{[1
,2
]}

Soykeabkaew, Nattakan ^{[1
,2
,3
]}

Peijs, Ton ^{[1
,2
,4
]}

机构：

[1] Queen Mary Univ London, Sch Mat Sci & Engn, London E1 4NS, England

[2] Queen Mary Univ London, Ctr Mat Res, London E1 4NS, England

[3] Mae Fah Luang Univ, Sch Sci, Chiang Rai 57100, Thailand

[4] Eindhoven Univ Technol, Eindhoven Polymer Labs, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF BIOBASED MATERIALS AND BIOENERGY | 2010年 / 4卷 / 02期

关键词：

Self-Reinforced Polymer; All-Cellulose; DMAc; Surface Dissolution; Cotton; MOLECULAR-WEIGHT CHARACTERIZATION; LITHIUM-CHLORIDE; FLAX FIBERS; SOLVENT EXCHANGE; PARTIAL OXYPROPYLATION; MECHANICAL-PROPERTIES; VOLUME FRACTION; POLYPROPYLENE; NANOCOMPOSITES; BEHAVIOR;

D O I：

10.1166/jbmb.2010.1077

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work isotropic 'self-reinforced cellulose' or 'all-cellulose' composites have been successfully prepared from cotton pads by means of a fibre surface dissolution method in lithium chloride dissolved in N, N-dimethylacetamide (LiCl/DMAc). Solvent exchange was used as activation pretreatment, involving subsequent immersion of the fibres in water, acetone and DMAc. Three different parameters have been studied: (i) dissolution time, (ii) activation time and (iii) cotton source. The morphological, thermal and mechanical properties of the obtained all-cellulose composites were characterized. It was found that a dissolution time of 18 h lead to biobased materials with the best overall mechanical performance, as this time allowed for the dissolution of a sufficient amount of fibre surface to obtain good interfacial bonding between fibres, while keeping a considerable amount of remaining fibre cores that provide a strong reinforcement to the composite.

引用

页码：129 / 138

页数：10