Synthesis and characterization of organic-inorganic hybrid block copolymers containing a fully condensed ladder-like polyphenylsilsesquioxane

Title
Synthesis and characterization of organic-inorganic hybrid block copolymers containing a fully condensed ladder-like polyphenylsilsesquioxane
Authors
알버트 이성수최승석이희승전현열백경열황승상
Keywords
atom transfer radical polymerization (ATRP); block copolymers; inorganic polymers; ladder-like polysilsesquioxane; organic-inorganic hybrid material; thermal properties; radical polymerization; silsesquioxane
Issue Date
2012-11
Publisher
Journal of polymer science Part A, Polymer chemistry
Citation
VOL 50, NO 21, 4563-4570
Abstract
A series of inorganic&#8211;organic hybrid block copolymers were synthesized via atom transfer radical polymerization using a fully condensed, ladder-like structured polyphenylsilsesquioxane end-functionalized macroinitiator. The inorganic portion, ladder-like polyphenylsilsesquioxane, was synthesized in a one-batch, base-catalyzed system, whereas organic hard and soft monomers, styrene, and n-butyl acrylate, were polymerized and copolymerized on the ends of the linear, inorganic backbone. Synthesized hybrid diblock, triblock, and random copolymers were characterized by 1H NMR, 29Si NMR, gel permeation chromatography, static light scattering, Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry. Hybrid block copolymers were well-defined with low polydispersity (<1.4) and exhibited enhanced thermal properties in the form of increased glass transition and degradation onset temperatures over their organic analogues.
URI
http://pubs.kist.re.kr/handle/201004/43237
ISSN
0887624X
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KIST Publication > Article
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