Siloxane/silane-crosslinked systems from supercritical carbon dioxide: I. Fluorinated poly(ether/siloxane)s

Autor:	Sreenu R. Venumbaka, Hui Zhou, John W. Fitch, Patrick E. Cassidy
Rok vydání:	2008
Předmět:	chemistry.chemical_classification Materials science Supercritical carbon dioxide Polymers and Plastics Ether Polymer Silane Toluene Catalysis Solvent chemistry.chemical_compound chemistry Siloxane Polymer chemistry
Zdroj:	Polymers for Advanced Technologies. 19:1-5
ISSN:	1099-1581 1042-7147
Popis:	A series of new, fluorinated, silicone-containing polymers with crosslinkable units has been synthesized by hydrosilation in toluene and supercritical carbon dioxide (70°C, 3000 psi) using platinum-divinyltetramethyldisiloxane (Pt-DVTMS) as a catalyst. The polymers were characterized by FTIR, NMR, GPC, TGA, and DSC. The molecular weights of these polymers ranged from 9,900 to 41,000. Comparison of the properties between reactions in toluene versus supercritical carbon dioxide indicated that the green solvent is a suitable alternative for hydrosilation. The hydrolysis and thermal curing of the crosslinkable precursor polymers produced higher molecular weight polymers with thermal stabilities ranging from 347 to 417°C. Copyright © 2007 John Wiley & Sons, Ltd.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::771f6511ee5813b02360e25271280f27 https://doi.org/10.1002/pat.983 Zobrazit plný text záznamu Plný text