Publication: Polylactic acid glycolysate as a cross-linker for epoxidized natural rubber
Issued Date
2016-03-01
Resource Type
ISSN
15308006
00952443
00952443
Other identifier(s)
2-s2.0-84959278542
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Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Elastomers and Plastics. Vol.48, No.2 (2016), 105-121
Suggested Citation
Phrutsadee Sukpuang, Mantana Opaprakasit, Atitsa Petchsuk, Pramuan Tangboriboonrat, Punchapat Sojikul, Pakorn Opaprakasit Polylactic acid glycolysate as a cross-linker for epoxidized natural rubber. Journal of Elastomers and Plastics. Vol.48, No.2 (2016), 105-121. doi:10.1177/0095244314557974 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/40919
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Title
Polylactic acid glycolysate as a cross-linker for epoxidized natural rubber
Abstract
© SAGE Publications. Hydroxyl-capped polylactic acid (PLA) oligomers are prepared by glycolysis reaction of PLA with ethylene glycol (EG) and used as a macromolecular cross-linker for epoxidized natural rubber (ENR). The glycolyzed PLA (GPLA) with three different molecular weights (2000, 10,000, and 44,000 g mol-1) are prepared by varying the glycolysis conditions. Effects of GPLA chain lengths and GPLA/ENR feed ratios on cross-linking efficiency, chemical structures, and physical properties of the cured products are investigated. The cross-linking efficiency is examined using a moving die rheometer, solvent fractionation, thermogravimetric analysis, and Fourier transform infrared spectroscopy. Optimum GPLA/ENR compositions for the curing reaction range from 20 wt% to 33 wt%, depending on the GPLA chain length. Because of their biodegradability, biocompatibility, and the ability to tune up their structures and properties, the cured rubber materials have high potential for use in various biomedical applications.