Minimizing the Strong Screening Effect of Polyhedral Oligomeric Silsesquioxane Nanoparticles in Hydrogen-Bonded Random Copolymers.
作者： Wei-Cheng Chen , Ruey-Chorng Lin , Shih-Min Tseng , Shiao-Wei Kuo
关键词:
摘要: A series of poly(vinylphenol-co-methacryisobutyl polyhedral oligomeric silsesquioxane) (PVPh-co-PMAPOSS) random copolymers have been synthesized through free radical copolymerizations acetoxystyrene with methacryisobutyl POSS monomer and subsequent hydrazine monohydrate-mediated hydrolysis the acetoxyl units. These were characterized using nuclear magnetic resonance spectroscopy (NMR), Fourier transform infrared (FTIR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), which revealed that content in could be varied by changing feed ratio 1H NMR analyses. This molecular design approach allowed us to investigate thermal properties hydrogen bonding interactions these PVPh-co-PMAPOSS comparison those PVPh/PMAPOSS blend systems. Hydrogen absent system, because a strong screening effect; contrast, experienced enhanced intramolecular minimized effect nanoparticles.
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