教師資料查詢 | 類別: 期刊論文 | 教師: 張正良 CHANG, CHENG-LIANG (瀏覽個人網頁)

標題: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
語言英文
ISSN0141-3910
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,紙本
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!