121st General Meeting of the KCS

Type Poster Presentation
Area Polymer Chemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code POLY.P-32
Subject A structure-controllable synthesis method of polysilsesquioxane via the sol-gel reaction of phenyltrimethoxysilane
Authors Han Jun Mun
Department of Chemistry, Keimyung University, Korea
Abstract Polysilsesquioxanes(PSSQs) were synthesized by hydrolysis and condensation polymerization using a tri-functional alkoxide silane having a T3 structure. PSSQs contain three structures that are random structure, ladder structure and cage structure. In this study, cage structure and ladder structure polysilsesquioxanes were synthesized under room temperature and normal pressure by controlling water content, amount of catalyst in hydrolysis and condensation of phenyltrimethoxysilane. Products of two type structure were analyzed with 29Si-NMR to observe T2, T3 peaks, crystal lattice of products were confirmed by XRD analysis and a molecular weight of synthesized products were compared with predicted molecular weight of PSSQ’s structures through MALDI-TOF analysis. A phenomenon that distinguishable synthesis method of cage and ladder structure was observed by controlling the amount of K2CO3 used for synthesis of polysilsesquioxane and reaction time. The amount of catalyst and reaction time are expected to determine the mechanism that the cyclic and linear compounds are synthesized.
E-mail gkswns1662@naver.com