聚酯/无机杂化分子间键合作用及微结构相关性的光谱研究  

Spectral Study on Intermolecular Coupling Interaction and Relation to Microstructure in Polyester/Inorganic Hybrid Materials

作　　者：聂康明[1] 庞文民[1] 王雨松[1] 鲁非[1] 朱清仁[1] 

机构地区：[1]中国科学技术大学结构分析重点实验室

出　　处：《光谱学与光谱分析》2005年第4期537-540,共4页Spectroscopy and Spectral Analysis

基　　金：安徽省自然科学基金 (0 30 4 4 80 1 ) ;国家自然科学基金 (50 3330 60 )资助项目

摘　　要：采用FTIR ,UV Vis,WAXD和DSC手段,研究了分子间为非共价键化学结合的PCL/SiO2 高分子无机杂化透明材料组分间的键合型式;分子间特殊氢键相互作用行为与结晶性聚合物在杂化材料中的微结构相关性。结果表明,杂化体系中PCL高分子与SiO2 无机组分间的键合,主要是依赖于杂化体系中较强的分子间氢键相互作用,其作用强度随无机相TEOS含量而变化。体系中氢键相互作用增加使PCL结晶高分子的相对结晶度下降,杂化材料的光学透明性提高。同时对体系中高分子 无机组分的微相分离尺度产生影响。The coupling form of the polymeric-inorganic component and the relation between intermolecular special hydrogen bonding interaction and the microstructure of crystallizable polymer, as well as micro-phase separation scale in non-covalently coupled poly (e-caprolactone) (PCL)/silica (SiO2) hybrid materials were investigated by means of Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, wide angle X-ray diffraction (WAXD) and differential scanning calorimetry (DSC). The results show that the coupling form between PCL and SiO2 mainly depend on a strong intermolecular hydrogen bonding interaction in the hybrid system. The hydrogen bonding strength increases with increasing TEOS content, while the crystallization of PCL decreases, and the optical transparency of hybrid materials increases. In addition, it affects the scale of micro-phase separation in hybrid materials.

关 键 词：结构相关性 分子间 光谱研究 键合作用 氢键相互作用 聚酯 UV-Vis 结晶性聚合物 SiO2 杂化材料 无机组分 相对结晶度 光学透明性 高分子 PCL FTIR WAXD 材料组分 化学结合 非共价键 TEOS 作用强度 微相分离 DSC 

分 类 号：TQ323.8[化学工程—合成树脂塑料工业] X703.1[环境科学与工程—环境工程]