Optical and flexible α-chitin nanofibers reinforced poly(vinyl alcohol) (PVA) composite film: Fabrication and property

被引：54

作者：

Deng, Qiaoyun ^{[1
]}

Li, Jing ^{[1
]}

Yang, Jingyun ^{[1
]}

Li, Dagang ^{[1
]}

机构：

[1] Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Jiangsu, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2014年 / 67卷

基金：

中国国家自然科学基金;

关键词：

alpha-Chitin nanofibers; Polymer-matrix composites (PMCs); Optical properties; Mechanical properties; NANOCOMPOSITE FILMS; DEACETYLATION;

D O I：

10.1016/j.compositesa.2014.08.013

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

In this study, alpha-chitin nanofibers (CNFs)-poly(vinyl alcohol) (PVA) composite films were fabricated to evaluate the compatibility and reinforcement effect of CNFs to PVA. CNFs were disintegrated by one-pass grinding and 40-min ultrasonication. The diameter of most of CNFs ranged from 30 nm to 50 nm. The CNFs-PVA composite films were made by immersing CNFs sheet into PVA solution. FUR and XRD analysis revealed that there are strong interaction and good compatibility between CNFs and PVA molecular. In comparison with the neat PVA film, the light transmittance of the composite film slightly decreased from 92% to 86%. The coefficient of thermal expansion dramatically decreased from 123.62 ppm K-1 to 25.09 ppm K-1. The tensile strength and Young's modulus were high to 127 MPa and 5.70 GPa, which were about 100% and 140% larger than those of the PVA film. The elongation at break point of the composite film decreased from 20.70% to 4.40%. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：55 / 60

页数：6

共 33 条

[1]

Extraction and characterization of chitin and chitosan from marine sources in Arabian Gulf [J].