利用自制的激光散射流变仪研究了PS/PVME(质量比30/70)二元共混物在振荡剪切场下的相分离动力学过程,以前的工作研究了此二元体系在振荡剪切场下相行为的时间依赖性,文中进一步研究了振荡剪切场下相行为的相位角(应变)依赖性.研究发现,在一个振荡周期内,体系相关长度的变化趋势反映出,就整体而言相区会在应变增大的过程中沿流动方向取向,而在应变减小过程中减弱取向,甚至可能形成长轴沿涡流方向的形状,其原因可能是相区在外力作用下发生了粘弹变形.
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