Hung Wei-I, Weng Chang-Jian, Huang Kuan-Yeh, Wu Pei-Shan, Dai Jiun-Kuang, Chang Ya-Han, Tsai Mei-Hui, Yeh Jui-Ming, Yu Yuan-Hsiang
Department of Chemistry and Center for Nanotechnology at CYCU, Chung Yuan Christian University, Chung Li 32023, Taiwan, ROC.
J Nanosci Nanotechnol. 2011 Apr;11(4):3454-63. doi: 10.1166/jnn.2011.3763.
A facile route has been developed to enhance compatibility between organic polyimide matrix and dispersed phase of inorganic silica particles without addition of conventional silane-coupling agent. The as-prepared hybrid sol-gel materials having reduced size of SiO2 particle dispersed in polyimide matrix were successfully synthesized through pre-catalyzed sol-gel route using an organic diamine base. The PI-silica hybrid materials through conventional polyamic acid-catalyzed sol-gel route with/without silane-coupling agent were also prepared for comparative control studies. Morphological feature of as-prepared sol-gel materials prepared from three different approaches was also compared based on the studies of transmission electron microscopy. Effects of the material composition, in three different catalyzed routes, were investigated by thermal stability, mechanical strength, optical clarity, gas barrier and water absorption measurements of polyimide and a series of polyimide-silica hybrid sol-gel materials, respectively.
已开发出一种简便方法，无需添加传统硅烷偶联剂即可增强有机聚酰亚胺基体与无机二氧化硅颗粒分散相之间的相容性。通过使用有机二胺碱的预催化溶胶 - 凝胶路线，成功合成了二氧化硅颗粒尺寸减小且分散在聚酰亚胺基体中的杂化溶胶 - 凝胶材料。还制备了通过常规聚酰胺酸催化的溶胶 - 凝胶路线添加/不添加硅烷偶联剂的聚酰亚胺 - 二氧化硅杂化材料用于对比控制研究。基于透射电子显微镜研究，还比较了由三种不同方法制备的溶胶 - 凝胶材料的形态特征。分别通过聚酰亚胺以及一系列聚酰亚胺 - 二氧化硅杂化溶胶 - 凝胶材料的热稳定性、机械强度、光学透明度、气体阻隔性和吸水性测量，研究了三种不同催化路线中材料组成的影响。
