部分相容聚合物共混体系相分离的流变学表征方法  

Rheological Characterization of Phase Separation in Partial Miscible Polymer Blends

作　　者：娄立娟[1] 王艳芳[1] 吴林美[1] 黄强[1] 王卓妮[1] 

机构地区：[1]中国石油天然气股份有限公司石油化工研究院,北京100195

出　　处：《中国塑料》2012年第8期9-15,共7页China Plastics

摘　　要：针对具有不同动态非对称性的部分相容聚合物共混体系,阐述了用于表征和探测其相分离特征的流变学方法,包括小振幅振荡剪切考察时温叠加原理的有效性和温度扫描,以及稳态剪切温度扫描;并且分析了共混体系的复杂结构对温度依赖性形成差异的深层原因,总结比较了各方法应用时的优缺点及其针对不同强弱动态非对称体系的适用性。Recent development of studies on rheological characterization of phase separation in partial miscible polymer blends with different dynamic asymmetry was reviewed in this paper, including time-temperature superposition principle and temperature ramp under oscillatory shear, as well as temperature ramp under steady shear; reasons for different dependences on temperatures for complex structures in blends were well analyzed, and advantages and applicability of the methods were summarized and compared according to blending systems with weak or strong dynamic asymmetry.

关 键 词：共混物 相分离 流变学 动态非对称性 

分 类 号：O631.3[理学—高分子化学]