Kinetics of the Formation of Poly(Methyldecylsiloxane) by Hydrosilylation of Poly(Methylhydrosiloxane) and 1-Decene
| Autor: | Vesna Antić, Petar R. Dvornic, Milutin N. Govedarica, Mališa Antić |
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| Rok vydání: | 2007 |
| Předmět: |
Hydrosilylation
Induction period Kinetics Infrared spectroscopy Karstedt's catalyst 02 engineering and technology poly(methyldecylsiloxane) 010402 general chemistry 01 natural sciences Decene Catalysis chemistry.chemical_compound Polymer chemistry General Materials Science Mechanical Engineering hydrosilylation poly(siloxane) 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry kinetics Mechanics of Materials Siloxane 0210 nano-technology |
| Zdroj: | Materials Science Forum |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.555.485 |
| Popis: | Poly(methylhydrosiloxane) [PMHS], prepared by siloxane equilibration reaction, was used for the hydrosilylation with 1-decene to obtain poly(methyldecylsiloxane) [PMDS]. Pt(0)-1,3-divinyltetramethyldisiloxane complex was used as a catalyst for hydrosilylation reaction. In order to investigate the kinetics of the formation of PMDS, a series of experiments was performed at different reaction temperatures (from 48 to 64 degrees C) with catalyst concentrations of 7.0 center dot 10(-7) Mol Of Pt per mol of CH=CH2. All reactions were carried out in bulk, with equimolar amounts of the reacting Si-H and CH=CH2 groups. The course of the reactions was monitored by following the disappearance of the Si-H bands by quantitative infrared spectroscopy. The obtained results show that an induction period occurs at lower reaction temperatures and that the rate of Si-H conversion follows the first-order kinetics. |
| Databáze: | OpenAIRE |
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