Publication: Synthesis of poly(siloxane/double-decker silsesquioxane) via dehydrocarbonative condensation reaction and its functionalization
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Issued Date
2016-03-08
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ISSN
00323861
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2-s2.0-84957538516
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Mahidol University
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SCOPUS
Bibliographic Citation
Polymer. Vol.86, (2016), 113-119
Suggested Citation
Rapheepraew Sodkhomkhum, Vuthichai Ervithayasuporn Synthesis of poly(siloxane/double-decker silsesquioxane) via dehydrocarbonative condensation reaction and its functionalization. Polymer. Vol.86, (2016), 113-119. doi:10.1016/j.polymer.2016.01.044 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/43381
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Title
Synthesis of poly(siloxane/double-decker silsesquioxane) via dehydrocarbonative condensation reaction and its functionalization
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Abstract
© 2016 Elsevier Ltd. All rights reserved. Chlorine-containing poly(siloxane/double-decker silsesquioxane) (P-Cl) was prepared in high yield at ambient room temperature via dehydrocarbonative polycondensation reaction between di[(3-chloropropyl)isopropoxysilyl]-bridged double-decker octaphenylsilsesquioxane (DDSQ) and hexamethyltrisiloxane. Particular attention for this polymer was also given to its functionalization through substitution reaction, especially due to nucleophilic substitution on the side-chain of polymer at silsesquioxane units. But more important, the use of halogen exchange method with bromine anion allows the formation of more reactive, bromine-containing poly(siloxane/double-decker silsesquioxane) (P-Br), which enables further post-substitution modification reactions in a POSS unit. The glass transition temperatures (Tg ∼ 15°C) of both halogenated polymers were significantly higher than poly(dimethylsiloxane) (PDMS). High transparency of polymers with hydrophobic surface could be found from solvent-casting thin film.