HPB－b－PMMA增容PVC／PE共混物相分离与相态结构研究

以激光散射（ＬＳ）跟踪升温过程光散射强度变化的方法，研究了氢化聚丁二烯－聚甲基丙烯酸甲酯嵌段共聚物（ＨＰＢ－ｂ－ＰＭＭＡ）增容聚氯乙烯（ＰＶＣ）／聚乙烯（ＰＥ）共混物溶液浇铸膜相分离行为的特点，还以广角Ｘ光衍射（ＷＡＸＤ）测定了该膜的结晶状况，扫描电镜（ＳＥＭ）和相差显微镜（ＰＣＭ）观察、记录了表面相态结构。提出增容剂在此既有增容作用又有“协调链段活动”作用的看法。

STUDY OF PHASE SEPARATION AND MORPHOLOGY OF DLEND PE/PVC WITH COMPATIBILIZER HPB-b-PMMA

The phase separation behaviours of casting films of blends PE/PVC with and without compatibilizer poly (hydrogenated butadiene-b-methylmethaerylate) copolymer were determined by Laser Scattering (LS).And then the crystallizations and the morphologies of phase surface between PE and PVC for these films were also measured by Wide Angle X-ray Diffraction(WAXD) and Scanning Electron Microscopy (SEM),Phase Contrast Microscopy (PCM), respectively. A view on the functions of both improving compatibility and adjusting moving ability of segments for compatibilizer was suggested.