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Synthesis of Vinyl-Containing Polydimethylsiloxane in An Active Medium.

ABSTRACT: This research deals with the synthesis of copoly(methylvinyl)(dimethyl)siloxanes by the copolycondensation of dimethyldiethoxy- and methylvinyldimethoxysilane in an active medium, followed by thermal condensation in a vacuum. We achieved a range of copolymers exhibiting finely tuned molecular weights spanning between 1500 and 20,000 with regulated functional methylvinylsiloxane units. Analysis of the microstructure showed that the copolymerization predominantly formed products demonstrating a random distribution of units (R~1). However, an increase in the content of vinyl-containing monomers increases the R parameter, indicating an enhanced tendency towards alternating linkages within the copolymer matrix.

SUBMITTER: Khmelnitskaia AG

PROVIDER: S-EPMC10819907 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

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Synthesis of Vinyl-Containing Polydimethylsiloxane in An Active Medium.

Khmelnitskaia Alina G AG Kalinina Aleksandra A AA Meshkov Ivan B IB Tukhvatshin Rinat S RS Cherkaev Georgii V GV Ponomarenko Sergey A SA Muzafarov Aziz M AM

Polymers 20240116 2

This research deals with the synthesis of copoly(methylvinyl)(dimethyl)siloxanes by the copolycondensation of dimethyldiethoxy- and methylvinyldimethoxysilane in an active medium, followed by thermal condensation in a vacuum. We achieved a range of copolymers exhibiting finely tuned molecular weights spanning between 1500 and 20,000 with regulated functional methylvinylsiloxane units. Analysis of the microstructure showed that the copolymerization predominantly formed products demonstrating a ra ...[more]

PMID: 38257056

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