Crystallization and mechanical properties of reinforced PHBV composites using melt compounding: Effect of CNCs and CNFs

被引：90

作者：

Du Jun ^{[1
]}

Zhao Guomin ^{[1
]}

Pan Mingzhu ^{[1
]}

Zhuang Leilei ^{[1
]}

Li Dagang ^{[1
]}

Zhang Rui ^{[2
]}

机构：

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

[2] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2017年 / 168卷

基金：

中国国家自然科学基金;

关键词：

Poly(3-hydroxybutyrate-co-3-hydroxyvalerate); Cellulose nanocrystals; Cellulose nanofibrils; Crystallization; Extrusion; HIGH-PRESSURE HOMOGENIZATION; CELLULOSE NANOCRYSTALS; ACID-HYDROLYSIS; FIBER; WOOD; NANOCOMPOSITES; NANOCELLULOSE; KINETICS;

D O I：

10.1016/j.carbpol.2017.03.076

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Nanocellulose reinforced poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) composites were prepared using melt compounding. The effects of nanocellulose types (CNCs and CNFs) and nanocellulose content (1, 2, 3, 4, 5, 6 and 7 wt%) on the crystallization, thermal and mechanical properties of PHBV composites were systematically compared in this study. The thermal stability of PHBV composites was improved by both CNCs and CNFs. CNFs with a higher thermal stability leaded to a higher thermal stability of PHBV composites. Both CNCs and CNFs induced a reduction in the crystalline size of PHBV spherulites. Furthermore, CNCs could act as a better nucleating agent for PHBV than did CNFs. CNCs and CNFs showed reinforcing effects in PHBV composites. At the equivalent content of nanocellulose, CNCs led to a higher tensile modulus of PHBV composites than did CNFs. 1 wt% CNCs/PHBV composites exhibited the most optimum mechanical properties. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：255 / 262

页数：8

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