Nucleophilic Cleavage of Crosslinked Polysiloxanes to Cyclic Siloxane Monomers: Mild Catalysis by a Designed Polar Solvent System
學年 94
學期 1
出版（發表）日期 2005-12-01
作品名稱 Nucleophilic Cleavage of Crosslinked Polysiloxanes to Cyclic Siloxane Monomers: Mild Catalysis by a Designed Polar Solvent System
作品名稱（其他語言）
著者 張正良; Chang, Cheng-liang; Lee, Howard Shih-jen; Chen, Cheng-kwo
單位 淡江大學化學工程與材料工程學系
出版者 Springer
著錄名稱、卷期、頁數 Journal of Polymer Research 12(6), pp.433-438
摘要 The solvent effect on the cyclic compound formation in the base-catalyzed aminolysis reaction of room temperature vulcanized polydimethylsiloxane networks under ambient temperature was investigated. The complete dissolution time of the silicone rubber in the less polar solvent system was longer which is attributed to the internal diffusion resistance for the penetration of the activated nucleophiles in the inherent hydrophobic polysiloxane networks. The main products were cyclic oligomers in the polar solvent systems. The reaction rate of aminolysis was proved to be faster than that of alcoholysis with the aid of a model compound under the reaction conditions designed.
關鍵字 alcoholysis;aminolysis;base catalyst;polydimethylsiloxane networks
語言 en
ISSN 1022-9760
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 否
國別 NLD
公開徵稿
出版型式 ,紙本
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