標題: Ester-amide exchange in blends of liquid-crystalline copolyester and polyamide 6
作者: Ho, JC
Wei, KH
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: copolyester;polyamide 6;exchange;activation energy;kinetics
公開日期: 15-八月-2000
摘要: The kinetics of the ester-amide exchange in solution blends of the random liquid-crystalline polyester copoly(oxybenzoate-terephthalate) (P64) and polyamide 6 (PA6) were studied with carbon nuclear magnetic resonance. With second-order reversible reactions assumed, the activation energy of the ester-amide interchange in 30/70, 50/50, and 70/30 P64/PA6 blends were all about 24.0 kcal/mol. The pre-exponential factors for the ester-amide exchange in 30/70, 50/50, and 70/30 P64/PA6 blends were 2.01 x 10(11), 2.59 x 10(10), and 2.74 x 10(12) min(-1), respectively. (C) 2000 John Wiley & Sons, Inc.
URI: http://hdl.handle.net/11536/30333
http://dx.doi.org/10.1002/1099-0488(20000815)38:16<2124
ISSN: 0887-6266
DOI: 10.1002/1099-0488(20000815)38:16<2124
期刊: JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
Volume: 38
Issue: 16
起始頁: 2124
結束頁: 2135
顯示於類別:期刊論文


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