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Synthesis of High Molecular Weight Poly (1, 1, 12, 12-tetramethyl-13-oxa-1, 12-disilatridecanylene-co-dimethylsiloxane) Using Anionic Ring-opening Polymerization

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Abstract

High molecular weight copolymers, referred to as polysilalkylene siloxanes or hybrid silicones, were prepared using anionic ROP of 1,1,3,3,14,14,16,16-octamethyl-2,15-dioxa-1,3,14,16-tetrasilacyclohexacosane (II) and octamethylcyclotetrasiloxane (D4) mixtures. The resultant gum-like polymers were characterized by 1H NMR, 13C NMR, 29Si NMR, FTIR, GPC, TGA and FTIR. It was determined that the resultant polymers possessed a ratio of alkylene to dimethylsiloxane units similar to that expected from the original monomer ratio. Number averaged molecular weights ranged from 111,000 to 160,900 g/mol in yields of 75% to 78%. In addition, the thermal stability of the poly(decanylene-co-dimethylsiloxane)s were similar to that of the homopolymer based on II.

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Authors and Affiliations

  1. Department of Chemistry, Bloomsburg University of Pennsylvania, 400 East 2nd Street, Bloomsburg, PA, 17859, USA

    Scott C. Radzinski & Mark A. Tapsak

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  1. Scott C. Radzinski
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  2. Mark A. Tapsak
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Correspondence to Mark A. Tapsak.

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Radzinski, S.C., Tapsak, M.A. Synthesis of High Molecular Weight Poly (1, 1, 12, 12-tetramethyl-13-oxa-1, 12-disilatridecanylene-co-dimethylsiloxane) Using Anionic Ring-opening Polymerization. Silicon 3, 57–62 (2011). https://doi.org/10.1007/s12633-011-9085-8

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  • DOI: https://doi.org/10.1007/s12633-011-9085-8

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