出版日期：1999-07-01 00:00:00

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

審稿制度：否

國別：GBR

出版型式：紙本