Mechanical and thermal properties of poly(lactic acid) composites with rice straw fiber modified by poly(butyl acrylate)

被引：166
作者：
Qin, Lijun [2 ,3 ]
Qiu, Jianhui [1 ,2 ,3 ]
Liu, Mingzhu [2 ,3 ]
Ding, Shenglong [2 ,3 ]
Shao, Liang [2 ,3 ]
Lue, Shaoyu [2 ,3 ]
Zhang, Guohong [1 ]
Zhao, Yang [1 ]
Fu, Xie [1 ]
机构：
[1] Akita Prefectural Univ, Fac Syst Engn, Dept Machine Intelligence & Syst Engn, Akita 0150055, Japan
[2] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
[3] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2011年 / 166卷 / 02期
关键词：
Composites; Poly(lactic acid); Rice straw fiber; Suspension polymerization; Butyl acrylate; POLY(L-LACTIC ACID); POLYPROPYLENE COMPOSITES; PLASTICIZER ABSORPTION; ENTHALPY RELAXATION; POLYMER COMPOSITES; GLASSY-POLYMERS; ECO-COMPOSITES; PRIOR HISTORY; HEMP FIBERS; WOOD FLOUR;
D O I：
10.1016/j.cej.2010.11.039
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The rice straw fiber (RSF) was modified by suspension polymerization of butyl acrylate (BA) monomer. The results of Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) indicated that poly(butyl acrylate) (PBA) was adsorbed and coated on RSF. The biodegradable composites were prepared with the modified rice straw fiber (MRSF) and poly(lactic acid) (PLA) by HAAKE rheometer. Mechanical properties showed that the tensile strength of PLA/MRSF composites (W(%) = 7.98) increased by 6 MPa compared with blank sample. The water absorption of the PLA/MRSF composites was lower than PLA/RSF composites. The thermal properties of these composites were investigated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The TGA results confirmed that thermal stability of PLA/RSF composites increased with the PBA increasing. The DSC data showed that RSF played a role as a nucleating agent and PHA made crystallization of PLA more difficult and incomplete. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：772 / 778
页数：7
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