Melt Flow Behavior and Processability of Polylactic Acid/Polystyrene (PLA/PS) Polymer Blends

被引：33

作者：

Kaseem, Mosab ^{[1
]}

Ko, Young Gun ^{[1
]}

机构：

[1] Yeungnam Univ, Plast Control & Mech Modeling Lab, Gyongsan 38541, South Korea

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2017年 / 25卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Polylactic acid; Polystyrene; Viscosity; Viscous activation energy; POLY(L-LACTIDE);

D O I：

10.1007/s10924-016-0873-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The present investigation dealt with the flow behavior and processability of polylactic acid/polystyrene (PLA/PS) polymer blends using a capillary rheometer. For this purpose, PLA/PS blends with different ratios of the concentrations were prepared using a single screw extruder. The shear viscosity, shear stress, shear rate, power-law index, viscous activation energy at a constant shear stress, and elongational stress were determined. PLA/PS blends exhibited a typical shear-thinning behavior over the entire range of shear rates tested, and the viscosity values of the blends would tend to decrease with increasing amount of PLA. In addition, the polymer blend of 70 % PLA and 30 % PS was found to be relatively less sensitive to the processing temperature, implying that the extrusion process was more desirable for fabrication of PLA/PS polymer blend than the injection process.

引用

页码：994 / 998

页数：5

共 50 条

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