Publication: Effect of epoxidation and surface modification on backing-required properties of peroxide prevulcanized natural rubber-based films
Issued Date
2014-03-01
Resource Type
ISSN
15308006
00952443
00952443
Other identifier(s)
2-s2.0-84893109492
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Mahidol University
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SCOPUS
Bibliographic Citation
Journal of Elastomers and Plastics. Vol.46, No.2 (2014), 156-174
Suggested Citation
Supa Wirasate, Chompoonuch Chokbunpiam, Rattaporn Thonggoom, Pramuan Tangboriboonrat Effect of epoxidation and surface modification on backing-required properties of peroxide prevulcanized natural rubber-based films. Journal of Elastomers and Plastics. Vol.46, No.2 (2014), 156-174. doi:10.1177/0095244312465297 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/34115
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Title
Effect of epoxidation and surface modification on backing-required properties of peroxide prevulcanized natural rubber-based films
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Abstract
The effect of epoxidation and surface modification by acrylamide grafting on backing-required properties of peroxide prevulcanized natural rubber (PPNR)-based films was investigated. Backing-required properties including oxygen transmission rate (OTR), water vapor transmission rate (WVTR) and Young's modulus were determined. In situ epoxidation of natural rubber (NR) latex was carried out using hydrogen peroxide/formic acid system. Both NR and epoxidized natural rubber (ENR) latexes were prevulcanized by tert-butyl hydroperoxide/fructose system before film casting. In the case of surface modification, acrylamide was grafted on PPNR surface by dipping the PPNR strip treated with O2 plasma into an aqueous solution of acrylamide monomer (AAm). Epoxidation showed more pronounced effect on the backing-required properties than surface grafting. As mole percentage epoxide increased, OTR decreased by 22-35%, whereas WVTR and Young's modulus increased by 116-170% and 56-138%, respectively, depending on mole percentage epoxide. In the case of surface grafting, it was found that all OTR, WVTR and Young's modulus were slightly higher than those of unmodified films. © The Author(s) 2012.