Aminolysis of cured siloxane polymers
學年 87
學期 2
出版（發表）日期 1999-07-01
作品名稱 Aminolysis of cured siloxane polymers
作品名稱（其他語言）
著者 張正良; Chang, C. L.; Lee, H. S.; Chen, C. K.
單位 淡江大學化學工程與材料工程學系
出版者 Elsevier
著錄名稱、卷期、頁數 Polymer degradation and stability 65(1), pp.1-4
摘要 The rate of the aminolysis of polydimethylsiloxane networks under ambient temperature was drastically enhanced by adding ethanol to the KOH/DEA solution. The results are attributed to the complete dissolution of potassium hydroxide and the elimination of the heterogeneous interfacial diffusion resistance. A mechanism is proposed to elucidate the need of a base as the catalyst and the effect of the second nucleophile. When excess of ethanol was added, the dissolution time of the silicone networks was increased as a result of the competition of pairing the second base and the nucleophiles. The product was composed of 85% cyclic oligomers. The displacement of –NEt2 by –OEt group is evidenced by the results of NMR analyses of the final polymer product.
關鍵字 Aminolysis;Polydimethylsiloxane;Networks
語言 en
ISSN 0141-3910
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,紙本
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