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Photoinitiated crosslinking of Ethylene-vinyl acetate copolymers and characterization of related properties.(Technical report): An article from: Polymer Engineering and Science


by Dahong Yao, Baojun Qu, Qianghua Wu

List Price: $9.95
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Sales Rank: 4850846
Studio: Thomson Gale
Binding: Digital
Number Of Pages: 14
Publication Date: November 01, 2007
Publisher: Thomson Gale


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This digital document is an article from Polymer Engineering and Science, published by Thomson Gale on November 1, 2007. The length of the article is 4179 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Photoinitiated crosslinking of EVA in the presence of benzophenone (BP) as photoinitiator and triallyl isocya-nurate (TAIC) as crosslinker and characterization of the related properties have been studied by gel determination, heat extension, DSC, DMTA, TGA, and mechanical measurements. The photoinitiated crosslinking efficiency of the EVA-BP-TAIC system and various factors affecting the crosslinking process, such as photoinitiator and crosslinker and their concentrations, irradiation temperature, and irradiation atmosphere were studied in detail and optimized by comparison of gel contents. The results show that the EVA samples with a thickness of 1 mm are readily crosslinked to a gel content of above 80% with 5 s UV-irradiation under optimum conditions. The data from the heat extension and DSC show that the crosslinking density of photocrosslinked EVA increase and their crystallinities decrease with increasing the UV-irradiation time. At the same time, photocrosslinking of EVA leads to a lowering of the melt temperature and a decrease of heat of fusion. The DMTA results show that photocrosslinking increases the amorphous phase and storage modulus of the crosslinked EVA, but does not change the glass transition temperature. The data from TGA and mechanical tests give evidence that the thermal stability and mechanical properties of photocrosslinked EVA samples are much better than those of the uncrosslinked EVA. POLYM. ENG. SCI., 47:1761-1767, 2007. [c] 2007 Society of Plastics Engineers

Citation Details
Title: Photoinitiated crosslinking of Ethylene-vinyl acetate copolymers and characterization of related properties.(Technical report)
Author: Dahong Yao
Publication: Polymer Engineering and Science (Magazine/Journal)
Date: November 1, 2007
Publisher: Thomson Gale
Volume: 47 Issue: 11 Page: 1761(7)

Article Type: Technical report

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