在0～30％PCL组成范围内的标题共混物,其DSC谱图上只出现单一的玻璃化转变,且位于两个纯组份之问。在红外光谱上,对于熔融状态的PCL/SAN共混物,观察到PCL的羧基峰随着SAN混入量的增加而移向低频。说明PCL分子与SAN分子之间存在着特殊的相 The title blends ranged from 0 to 30% PCL with only a single glass transition on the DSC spectrum and were located between two pure components. In the infrared spectrum, for the PCL / SAN blends in the molten state, it was observed that the carboxylate peak of the PCL shifted to lower frequencies as the amount of SAN incorporated increased. This shows that there is a special phase between PCL molecules and SAN molecules