STVPh/PPC共混体系的分子链运动和相容性研究  

Segment Motion and Miscibility of STVPh/PPC Blend System

作　　者：丘富荣[1] 陈士明[1] 谭莉[1] 平郑骅[2] 

机构地区：[1]复旦大学分析测试中心 [2]复旦大学高分子科学系,上海200433

出　　处：《高等学校化学学报》2004年第7期1384-1386,共3页Chemical Journal of Chinese Universities

摘　　要：The polymer-polymer interaction parameters of STVPh/PPC blends were calculated by Hildebrand solubility parameter. Accordingly the miscibility of the blends was predicted. The segment motion and miscibility of blends were also investigated by electron spin resonance(ESR) spin probe method. ESR spectra were measured as a function of temperature and the hydroxyl content in STVPh. For all blends, two spectral components with different rates of motion, a "fast" and a "slow" component were observed. This result showed that the nitrooxide radical existed in two different matrixes, a more flexible PPC-rich and a more rigid STVPh-rich micro domain. In addition, T 5mT and rotational correlation time τ c and activation energy E a were obtained from ESR spectra, which indicated the hydrogen bonding between the carbonyl and ether oxygen in PPC and the hydroxyl in STVPh was enhanced with increasing the hydroxyl content in STVPh.The polymer-polymer interaction parameters of STVPh/PPC blends were calculated by Hildebrand solubility parameter. Accordingly the miscibility of the blends was predicted. The segment motion and miscibility of blends were also investigated by electron spin resonance(ESR) spin probe method. ESR spectra were measured as a function of temperature and the hydroxyl content in STVPh. For all blends, two spectral components with different rates of motion, a 'fast' and a 'slow' component were observed. This result showed that the nitrooxide radical existed in two different matrixes, a more flexible PPC-rich and a more rigid STVPh-rich micro domain. In addition, T 5mT and rotational correlation time τ c and activation energy E a were obtained from ESR spectra, which indicated the hydrogen bonding between the carbonyl and ether oxygen in PPC and the hydroxyl in STVPh was enhanced with increasing the hydroxyl content in STVPh.

关 键 词：聚碳酸异丙烯酯 电子自旋共振 聚苯乙烯 分子链运动 相容性 溶度参数 高分子共混物 

分 类 号：TB324[一般工业技术—材料科学与工程] O631[理学—高分子化学]