Nanocellulose fibrils isolated from BHKP using ultrasonication and their reinforcing properties in transparent poly (vinyl alcohol) films

被引：51

作者：

Li, Wei ^{[1
]}

Zhao, Xin ^{[1
]}

Huang, Zhanhua ^{[1
]}

Liu, Shouxin ^{[1
]}

机构：

[1] Northeast Forestry Univ, Minist Educ, Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China

来源：

JOURNAL OF POLYMER RESEARCH | 2013年 / 20卷 / 08期

基金：

中央高校基本科研业务费专项资金资助; 中国国家自然科学基金;

关键词：

Nanocellulose fibrils; Ultrasonication; Poly (vinyl alcohol); Reinforcement; HIGH-INTENSITY ULTRASONICATION; POLY(VINYL ALCOHOL); CELLULOSE FIBERS; COMPOSITES; NANOCOMPOSITES; CHEMISTRY;

D O I：

10.1007/s10965-013-0210-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Nanocellulose fibrils (NCFs) were isolated from bleached hard kraft pulp (BHKP) using high-intensity ultrasonication, and their reinforcement capabilities for poly (vinyl alcohol) films were investigated. Scanning electron microscopy (SEM), thermogravimetric analysis (TG), and X-ray diffraction (XRD) were used to characterize the fibrils and films. The results revealed that the prepared NCFs were long filaments with a cellulose I crystal structure. The filaments were 50-150 nm in diameter, and had lengths longer than 500 mu m. The crystallinity and thermal stability of the NCFs were increased compared with BHKP because of the removal of hemicellulose. A NCFs content of 4 wt% was found to give the best light transmittance and mechanical properties in the PVA composites. The PVA composites exhibited a visible light transmittance of 75 %, and the tensile strength and Young's modulus were significantly improved, with values 1.86 and 1.63 times larger than that of neat PVA.

引用

页数：7

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