Effect of glycidyl methacrylate-grafted natural rubber on physical properties of polylactic acid and natural rubber blends

被引：108
作者：
Juntuek, Punmanee [1 ,2 ]
Ruksakulpiwat, Chaiwat [3 ]
Chumsamrong, Pranee [1 ,2 ]
Ruksakulpiwat, Yupaporn [1 ,2 ]
机构：
[1] Suranaree Univ Technol, Inst Engn, Sch Polymer Engn, Nakhon Ratchasima 30000, Thailand
[2] Chulalongkorn Univ, Ctr Petr Petrochem & Adv Mat, Bangkok 10330, Thailand
[3] Khon Kaen Univ, Fac Sci, Dept Chem, Khon Kaen 40002, Thailand
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2012年 / 125卷 / 01期
关键词：
polylactic acid; natural rubber; polymer blend; reactive blending; IN-SITU COMPATIBILIZATION; MECHANICAL-PROPERTIES; REACTIVE COMPATIBILIZATION; POLY(LACTIC ACID); CRYSTALLIZATION BEHAVIOR; MORPHOLOGY; PLA; POLY(L-LACTIDE); IMPROVEMENT; COPOLYMER;
D O I：
10.1002/app.36263
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Natural rubber (NR) was melt blended with polylactic acid (PLA) at various ratios using an internal mixer. The impact strength and elongation at break of PLA/NR blend dramatically increased with increasing NR content up to 10% (w/w). Glycidyl methacrylate-grafted natural rubber (NR-g-GMA) was used as a compatibilizer for PLA/NR blend. The effects of content and %grafting of NR-g-GMA on mechanical properties of PLA/NR blend were studied. The experimental result showed that the addition of NR-g-GMA in PLA/NR blend significantly improved impact strength and elongation at break of PLA/NR blend when compared with that of neat PLA and PLA/NR blend without NR-g-GMA. The impact strength and elongation at break of PLA/NR blend increased with increasing NR-g-GMA content up to 1% (w/w). Moreover, with increasing % grafting of NR-g-GMA in PLA/NR blend up to 4.35, the impact strength and elongation at break of the blend increased. Morphological and thermal property of PLA, PLA/NR, and PLA/NR/NR-g-GMA were elucidated as well. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
引用
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页码：745 / 754
页数：10
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