Journal of Industrial and Engineering Chemistry, Vol.13, No.4, 571-577, July, 2007
Study on the Effect of Platinum Catalyst for the Synthesis of Polydimethylsiloxane Grafted with Polyoxyethylene
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Polydimethylsiloxane grafted with polyoxyethylene (PDMS-g-POE) was synthesized by the hydrosilylation reactions in the presence of various platinum-based catalysts. The hydrosilylation reactions also gave small amount of side products such as propionaldehyde and isomers of unsaturated polyoxyethylene. When the reactivities of catalytic systems including Speier’s, Lamoreaux’s, and Karstedt’s catalyst and platinum adsorbed on carbon (Pt/C) were compared based on the amount of platinum, Speier’s catalyst was found to be the most effective in the hydrosilylation reaction and Pt/C showed extremely low reactivity compared to three other catalytic systems.
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