Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 125, Issue 1, Pages 745-754Publisher
WILEY
DOI: 10.1002/app.36263
Keywords
polylactic acid; natural rubber; polymer blend; reactive blending
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Funding
- Suranaree University of Technology
- National Innovation Agency, Thailand
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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
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