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제122회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Structure-controllable synthesis method that ladder structure and cage structure of polysilsesquioxane via the sol-gel reaction of various silane

등록일
2018년 8월 22일 17시 40분 44초
접수번호
1125
발표코드
POLY.P-17 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 18일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
Polymer Chemistry
저자 및
공동저자
Han Jun Mun, Jae Young Bae*
Department of Chemistry, Keimyung University, Korea
Polysilsesquioxanes were prepared by hydrolysis and condensation polymerization using various tri-functional alkoxide silane having a T3 structure. Polysilsesquioxanes include three structures: random structure, ladder structure and cage structure. In this study, polysilsesquioxanes of cage structure and ladder structure were prepared at room temperature pressure by controlling silane concentration and amount of water in hydrolysis and condensation of various silane. Two types of products were analyzed by 29Si-NMR to observe the T2 and T3 peaks. The crystal lattice of products was confirmed by XRD analysis and a molecular weight of prepared products was compared with the predicted molecular weight of PSSQ's structure by MALDI-TOF and GPC analysis. A distinguishable synthesis of cage and ladder structures was observed by controlling the amount of water and silane concentration used for synthesis of polysilsesquioxane. The amount of water and concentration of silane are expected to determine the mechanism that the cyclic and linear compounds are synthesized.

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