将液晶单体对苯二甲酸二-(4-羧基苯)酯(M1)与1,10-癸二醇、1,12-十二烷二醇和亮黄(By)合成了一种含有磺酸基的主链液晶离聚物(LCI).将LCI与聚对苯二甲酸丁二醇酯(PBT),聚乙烯(PE)进行熔融共混制备了PBT/PE/LCI共混物.所合成的共混物通过DSC、三维红外图像系统和拉伸试验等方法进行了热性能、微观形态及力学性能的分析.结果表明,当LCI加入9%(质量分数,下同)时,由于LCI链中的磺酸离子与PBT的酯基形成了离子-偶极作用,增加了PBT和PE的界面粘接力,改善了二者的相容性,同时,共混物的拉伸强度也达到了最大值(24MPa);当LCI含量较大时(>11%),由于LCI自身发生团聚,增容效果变差,力学性能也有所降低.
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