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Journal Textile Coloration and Finishing
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2023 / V.35,no.4,Dec
Title Enhancement in the Thermal Stability of Microporous UHMWPE Membrane by LED-UV Crosslinking
Authors Jeong-Hwan Kim and Jinho Jang
Institution/Affiliations Kumoh National Institute of Technology
Pages/Total page pp.231 ~ 238 / 8
Language Korean
Abstract Microporous gel films of 29 m were prepared by the gel drawing of UHMWPE/soybean oil blend (4:6, w/w) up to 800%. The stretched films containing the optimal photoinitiator concentration, depending on the film thickness, was crosslinked under 365 nm LED-UV irradiation and the oil was extracted with n-hexane, resulting in a gel fraction of 95 % or more. With the formation of the cross-linked structure, the melt-down temperature and melt-down elongation increased by 16 °C and by 63% respectively. Also the thermal stability of the crosslinked UHMWPE was proved by the area shrinkage under the heat treatment decreased to 3.8 % compared to 17.4 % for the pristine film, and by the reductions in the combustion heat. The enhanced thermal stability of the crosslinked UHMWPE microporous membranes can be used for various industrial applications such as filters, electric vehicles and energy storage systems.
Keywords UHMWPE, membrane, LED-UV, crosslinking, melt-down, heat resistance
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Reference http://koreascience.or.kr/journal/OSGGBT.page

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