Poly(vinyl alcohol) nanocomposites reinforced with cellulose fibrils isolated by high intensity ultrasonication

被引：193

作者：

Cheng, Qingzheng ^{[1
]}

Wang, Siqun ^{[1
]}

Rials, Timthy G. ^{[1
]}

机构：

[1] Univ Tennessee, Tennessee Forest Prod Ctr, Knoxville, TN 37996 USA

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2009年 / 40卷 / 02期

关键词：

Polymer-matrix composites (PMCs); Mechanical properties; Mechanical testing; Casting; MECHANICAL-PROPERTIES; ELASTIC-MODULUS; BEHAVIOR; WHISKERS; WOOD; MICROFIBRILS; COMPOSITES; NANOFIBERS; POLYMERS; LATEX;

D O I：

10.1016/j.compositesa.2008.11.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cellulose fibrils in micro and nanoscales generated front biomass are relative new reinforcing materials for polymer composites, which have potential lightweight and high strength and are biodegradable. The objective of this Study was to reinforce biodegradable polymers by cellulose fibrils generated from several cellulose sources by ultrasonic treatment in order to utilize biomass to fabricate high-value products. The geometrical characteristics of the fibrils were investigated by polarized light microscopy (PLM) and atomic force microscopy (AFM). The degree of fibrillation of the fibers evaluated by water retention value was significantly increased after treatment. The treated cellulose and separated fibrils were used to reinforce poly(vinyl alcohol) (PVA) to make biodegradable nanocomposites by film casting. The mechanical properties of PVA were significantly improved by most of the small fibrils. The morphological characteristics of the nanocomposites were investigated with PLM, scanning electron microscopy, and AFM. (C) 2008 Published by Elsevier Ltd.

引用

页码：218 / 224

页数：7

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