Synthesis and structure of crosslinked poly[(methylsiloxane)-co-(oxymethylene)] copolymers

✍ Scribed by Mario Rodríguez-Baeza; Melcy Zapata; I. Valeria P. Yoshida

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 370 KB
• Volume: 18
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.1997.030180818

✦ Synopsis

Abstract

A series of new crosslinked copolymers was obtained by cationic ring‐opening copolymerization of 1,3,5,7‐tetramethylcyclotetrasiloxane and 1,3,5‐trioxane. The poly[(methylsiloxane)‐co‐(oxymethylene)] copolymers are white crystals or glassy. Crosslinking reactions take place in the reaction medium. The degree of crosslinking increases with a higher concentration of the methylsiloxane units in the copolymers. The combination of solid‐state magic‐angle spinning nuclear magnetic resonance of ^29^Si and ^13^C and Fourier‐transform infrared spectroscopy provided a quantitative description of the copolymer microstructure.