Synthesis and Thermal and Rheological Properties of Polydimethylsiloxanes Modified with Benzoic Acid Fragments
| Autor: | Aziz M. Muzafarov, Mikhail I. Buzin, Viktor G. Vasil'ev, Sergey A. Milenin, D. I. Shragin, P. A. Tikhonov, Vladimir S. Papkov, V. V. Gorodov |
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| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Polymers and Plastics Silicon Polydimethylsiloxane 010405 organic chemistry Hydride Hydrosilylation organic chemicals chemistry.chemical_element 010402 general chemistry 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Rheology Thermal Polymer chemistry Materials Chemistry Ceramics and Composites Copolymer Benzoic acid |
| Zdroj: | Polymer Science, Series B. 60:290-298 |
| ISSN: | 1555-6123 1560-0904 |
| Popis: | 4-(Dimethylvinylsilyl)benzoic acid is obtained by organolithium synthesis. Polydimethylsiloxanes containing silicon hydride groups are modified by introducing benzoic acid fragments via the hydrosilylation reaction. The thermal and rheological properties of the copolymers formed are studied. It is found that a rise in the content of benzoic acid results in a shift in the glass-transition temperature to a higher temperature region and the copolymers do not crystallize. Benzoic acid fragments improve the intermolecular interaction of polydimethylsiloxane chains more strongly than the ones of undecenoic acid. |
| Databáze: | OpenAIRE |
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