Synthesis and characterization of alt-copoly(carbosiloxane)s containing oligodiphenylsiloxane segments

• Published in: Journal of polymer science. Part A, Polymer chemistry Polymer chemistry, 2005-05, Vol.43 (10), p.2155-2163
• Main Authors: Gädda, Thomas M., Weber, William P.
• Format: Article
• Language: English
• Subjects: Applied sciences; block copolymers; Exact sciences and technology; Inorganic and organomineral polymers; oligomers; Physicochemistry of polymers; polysiloxanes; Preparation; step-growth polymerization
• ISSN: 0887-624X; 1099-0518
• DOI: 10.1002/pola.20665

Novel α,ω‐divinyloligodiphenylsiloxanes (1,9‐divinyldecaphenylpentasiloxane, 1,7‐divinyloctaphenyltetrasiloxane, 1,5‐divinylhexaphenyltrisiloxane, and 1,3‐divinyltetraphenyldisiloxane) were prepared and copolymerized by Pt‐catalyzed hydrosilylation with α,ω‐dihydridopentasiloxanes. The molecular weights of the copolymers were measured with gel permeation chromatography, and their thermal properties were characterized with differential scanning calorimetry and thermogravimetric analysis. The polymers had high thermal stability in air and nitrogen. The oligomer and polymer structures were determined with 1H, 13C, 19F, and 29Si NMR and IR spectrometry. The molecular weights of the oligomers were measured with high‐resolution mass spectrometry. © 2005 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 43: 2155–2163, 2005 Novel α,ω‐divinyloligodiphenylsiloxanes were prepared, characterized, and copolymerized by Pt‐catalyzed hydrosilylation with α,ω‐dihydridopentasiloxanes. The oligomer and polymer structures were determined with 1H, 13C, 19F, and 29Si NMR and IR spectrometry. The polymers had high thermal stability in both air and nitrogen.