Hong, SP Hong, SM Hwang, SS Kim, BC 2024-01-21T07:43:45Z 2024-01-21T07:43:45Z 2021-09-03 2003-12-05 0021-8995 https://pubs.kist.re.kr/handle/201004/138004 Polymethylphenylsilsesquioxane (PMPSQ-OH) and trimethylsilyl end-blocked PMPSQ (PMPSQ-EC) were prepared. The thermal decomposition behavior of these polymers was studied by thermogravimetric analysis (TGA) and FT-Raman spectroscopy. Hydroxyl-functionalized polystyrene (PS-OH) was also prepared by anionic living polymerization. Thin hybrid films of PMPSQ/PS-OH with various blend ratios were obtained by spin-coating on freshly cleaned glass. The surface morphology of the hybrid films was investigated by atomic force microscopy (AFM). In 80/20 PMPSQ/PS-OH hybrid film, the PS-OH component produced a very uniformly dispersed phase. This hybrid film contained small domains of PS-OH whose size ranged from 60 to 80 nm. As the content of PS-OH was increased, the domain morphology coarsened and phase inversion took place around 50 wt %. In the phase-inversed system, the PMPSQ-rich phase was uniformly distributed in the PS-OH-rich continuous phase. In addition, temperature-dependent dielectric properties of PMPSQ/PS-OH hybrids were investigated. Relaxation of the hybrids was observed with an increasing content of the PS-OH component due to the amorphous glass transition behavior of PS-OH. (C) 2003 Wiley Periodicals, Inc. English JOHN WILEY & SONS INC POLYMERS BLENDS POLY(PHENYLSILSESQUIOXANE) TRICHLOROPHENYLSILANE POLYCONDENSATION GLASSES FILMS PPSQ Characterization and physical properties of polymethylphenylsilsesquioxane (PMPSQ) and hydroxyl-functionalized polystyrene (PS-OH) hybrids Article 10.1002/app.12963 1 JOURNAL OF APPLIED POLYMER SCIENCE, v.90, no.10, pp.2801 - 2812 JOURNAL OF APPLIED POLYMER SCIENCE 90 10 2801 2812 scie scopus 000185787000027 2-s2.0-0242336773 Polymer Science Polymer Science Article POLYMERS BLENDS POLY(PHENYLSILSESQUIOXANE) TRICHLOROPHENYLSILANE POLYCONDENSATION GLASSES FILMS PPSQ polymethylphenylsilsesquioxane (PMPSQ) physical properties hydroxyl-functionalized polystyrene (PS-OH) hybrids