核-壳结构聚丙烯酸酯-聚氨酯微乳液膜的相行为

Phase Behaviour of CoreShell Type Polyacrylate Polyurethane Microemulsion Cast Films

用动态力学、红外光谱和差热分析方法研究了非交联核－壳结构聚丙烯酸酯－聚氨酯（ＰＡＣ－ＰＵ）微乳液膜的相行为．结果表明：核壳间的氢键增强了壳层软硬段间的相分离，同时破坏了硬段相中的短程有序结构。

The phase separation of the coreshell type polyacrylatepolyurethane cast films has been studied by mechanodynamic test, IR and DSC methods. The results indicated that the existence of hydrogen bondings between acetone C=O in the core and NH in the shell improves the phase separation of the soft and hard segments in the shell, and also improves the compatibility of the core and shell, breaking the short range order of the hard segments.