Effect of glycidyl methacrylate‐grafted natural rubber on physical properties of polylactic acid and natural rubber blends | Zendy

Juntuek Punmanee | Zendy; Ruksakulpiwat Chaiwat | Zendy; Chumsamrong Pranee | Zendy; Ruksakulpiwat Yupaporn | Zendy

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

Author(s) -

Juntuek Punmanee,

Ruksakulpiwat Chaiwat,

Chumsamrong Pranee,

Ruksakulpiwat Yupaporn

Publication year - 2011

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.36263

Subject(s) - polylactic acid , glycidyl methacrylate , natural rubber , materials science , elongation , izod impact strength test , grafting , composite material , ultimate tensile strength , thermal stability , polymer chemistry , chemical engineering , polymer , copolymer , engineering

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. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

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