Preparation and Characterization of Reactive Blends of Poly(lactic acid), Poly(ethylene-co-vinyl alcohol), and Poly(ethylene-co-glycidyl methacrylate)

被引:4
作者
Warangkhana, Phromma [1 ]
Sadhan, Jana C. [2 ]
Rathanawan, Magaraphan [1 ]
机构
[1] Chulalongkorn Univ, Petr & Petrochem Coll, Bangkok, Thailand
[2] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA
来源
PROCEEDINGS OF PPS-30: THE 30TH INTERNATIONAL CONFERENCE OF THE POLYMER PROCESSING SOCIETY | 2015年 / 1664卷
关键词
Poly(ethylene-co-glycidyl methacrylate); Poly(ethylene-co-vinyl alcohol); Poly(lactic acid); RUBBER; POLYLACTIDE; MORPHOLOGY; EVOH; GMA;
D O I
10.1063/1.4918397
中图分类号
O59 [应用物理学];
学科分类号
摘要
The ternary blends of poly(lactic acid) (PLA), poly(ethylene-co-vinyl alcohol) (EVOH), and poly(ethylene-coglycidyl methacrylate) (EGMA) were prepared. The role of EGMA as a compatibilizer was evaluated. The weight ratio of PLA: EVOH was 80: 20 and the EGMA loadings were varied from 5-20 phr. The blends were characterized as follows: thermal properties by differential scanning calorimetry, morphology by scanning electron microscopy, and mechanical properties by pendulum impact tester, and universal testing machine. The glass transition temperature of PLA blends did not change much when compared with that of PLA. The blends of PLA/EGMA and EVOH/EGMA showed EGMA dispersed droplets where the latter led to poor impact properties. However, the tensile elongation at break and tensile toughness substantially increased upon addition of EGMA to blends of PLA and EVOH. It was noted in tensile test samples that both PLA and EVOH domains fibrillated significantly to produce toughness.
引用
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页数:5
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