Effects of cellulose nanofibrils on the structure and properties on PVA nanocomposites

被引：183

作者：

Liu, Dagang ^{[1
]}

Sun, Xun ^{[1
]}

Tian, Huafeng ^{[2
]}

Maiti, Sonakshi ^{[1
]}

Ma, Zhongshi ^{[1
]}

机构：

[1] Nanjing Univ Informat Sci & Technol, Dept Chem, Nanjing 210044, Jiangsu, Peoples R China

[2] Beijing Technol & Business Univ, Dept Mat Sci & Engn, Beijing 100048, Peoples R China

来源：

CELLULOSE | 2013年 / 20卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Cellulose nanofibrils; Reinforcement; PVA; FIBRILLATED CELLULOSE; POLYVINYL-ALCOHOL; COMPOSITE FILMS; POLY(VINYL; MICROFIBRILS; FIBER; PULP;

D O I：

10.1007/s10570-013-0073-6

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

A green method-joint mechanical grinding and high pressure homogenization-was used to defibrillate paper pulp into nanofibrils. The prepared cellulose nanofibrils (CNF) were then blended with PVA in an aqueous system to prepare transparent composite film. The size and morphology of the nanofibrils and their composites were observed, and the structure and properties were characterized. The results showed that CNFs are beneficial to improve the crystallinity, mechanical strength, Young's modulus, T (g) and thermal stability of the PVA matrix because of their high aspect ratio, crystallinity and good compatibility. Therefore, nano cellulosic fibrils were proven to be an effective reinforcing filler for the hydrophilic polymer matrix. Moreover, the green fabrication approaches will be helpful to build up biodegradable nanocomposites with wide applications in functional environmentally friendly materials.

引用

页码：2981 / 2989

页数：9

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