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Lyocell纤丝及其可生物分解的纳米复合材料研究

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2007年04期
Page:
21-26
Column:
研究论文
publishdate:
2007-04-20

Article Info:/Info

Title:
Lyocell-derived Cellulose Fibril and Its Biodegradable Nanocomposite
Article ID:
1000-2006(2007)04-0021-06
Author(s):
CHENG Qing-zheng1 WANG Si-qun1* ZHOU Ding-guo2 RIALS Tim1 ZHANG Yang2
1. Tennessee Forest Products Center University of Tennessee, Knoxville, Tennessee, 37996, USA; 2. College of Wood Science and Technology Nanjing Forestry University, Nanjing, 210037, China
Keywords:
Biodegradable Cellulose Fibril Mechanical properties Nanocomposite Nano
Classification number :
TQ351
DOI:
10.3969/j.jssn.1000-2006.2007.04.005
Document Code:
A
Abstract:
Biodegradable nanocomposite is one of the next generation materials. Cellulose fibrils in micro and nano scales, which are environmentally friendly and have potential lightweight and high strength, can be used to make biodegradable nanocomposites. The purposes of this research were to characterize the fibrils isolated from Lyocell fiber by a novel mechanical process and to discover weather the fibril reinforced biodegradable nanocomposites yield greater mechanical properties. The geometrical characteristics of the fibrils were investigated using polarized light microscopy (PLM) and scanning electron microscopy (SEM), and their crystallinity was investigated by wide angle X-ray diffraction (WAXD). The degree of fibrillation of the fibers is evaluated by water retention value (WRV). Fibril-reinforced nanobiocomposites, consisting of a biodegradable polymer (PLA) and fibrils were prepared by compression molding, evaluated by tensile test, and their morphological characteristics were investigated with SEM. The fibrils increased both tensile modulus and strength of polymer matrix, but a poor adhesion between fibrils and the matrix was still observed by SEM.

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Last Update: 2013-05-20