Mechanism for the Formation of Poly(phenylsilsesquioxane)

Poly(phenylsilsesquioxane) with molecular weight of 1400 was synthesized by hydrolysis of phenyltrichlorosilane, followed by condensation of the resulting hydrolyzates in the presence of a catalytic amount of hydrochloric acid in methyl isobutyl ketone. The progress of dehydration of the hydrolyzate...

Full description

Saved in:
Bibliographic Details
Published inMacromolecules Vol. 37; no. 8; pp. 2775 - 2778
Main Authors Yamamoto, Shigeyuki, Yasuda, Naoki, Ueyama, Akemi, Adachi, Hiroshi, Ishikawa, Mitsuo
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 20.04.2004
Subjects
Applied sciences
Exact sciences and technology
Inorganic and organomineral polymers
Physicochemistry of polymers
Preparation
Hydrolysis
Solution polycondensation
Silsesquioxane polymer
Self condensation
Reaction mechanism
Organic silane
Acid catalysis
Experimental study
Successive reaction
Online AccessGet full text

Cover

More Information
Summary:Poly(phenylsilsesquioxane) with molecular weight of 1400 was synthesized by hydrolysis of phenyltrichlorosilane, followed by condensation of the resulting hydrolyzates in the presence of a catalytic amount of hydrochloric acid in methyl isobutyl ketone. The progress of dehydration of the hydrolyzates leading to poly(phenylsilsesquioxane) was monitored by 29Si NMR spectroscopy. Dehydration of ci s-(1,3,5,7-tetrahydroxy)-1,3,5,7-tetraphenylcyclooctasiloxane as a model compound was also investigated by the 29Si NMR technique. The mechanism for the formation of poly(phenylsilsesquioxane) is discussed.
Bibliography:istex:F01245814EDB9BFE6572998F30E0B9E7323F28AF
ark:/67375/TPS-5XMZMV1R-K
ISSN:0024-9297
1520-5835
DOI:10.1021/ma035337a