马来酸酐接枝液体异戊橡胶接枝率的测试方法  

Test Method of Grafting Ratio of Maleic Anhydride Grafted Liquid Isoprene Rubber

作　　者：何丽霞[1,2] 陈冬梅[1] 

机构地区：[1]青岛科技大学高分子科学与工程学院,山东青岛266042 [2]青岛伊科思新材料股份有限公司,山东青岛266604

出　　处：《功能高分子学报》2015年第4期398-402,共5页Journal of Functional Polymers

摘　　要：在锂系液体橡胶（LIR）聚合反应后期加入马来酸酐（MAH）进行接枝反应,制备了马来酸酐接枝液体异戊橡胶（LIR-g-MAH）。采用化学滴定法对比研究了LIR-g-MAH接枝率的测试方法。结果表明,直接滴定法准确度高、重复性好,且当样品用量为1.0~2.0g,水解试剂为乙醇,滴定碱标准溶液浓度为0.08~0.12mol/L时,测试条件最优。Maleic anhydride grafted liquid isoprene rubber（LIR-g-MAH）is synthesized by maleic anhydride（MAH）and solution of liquid isoprene rubber（LIR）after polymerization reaction of LIR with lithium catalyst.The test method of grafting ratio of LIR-g-MAH was studied with chemical titration method.Results showed that the optimal determination conditions for grafting ratio of LIR-g-MAH are as follows：the direct titration method has higher accuracy and better repeatability,sample dosage is 1.0~2.0g,hydrolysis reagent is ethanol,the concentration of standard KOH-ethanol solution is 0.08~0.12mol/L.

关 键 词：马来酸酐 液体异戊橡胶 接枝率 

分 类 号：O632.12[理学—高分子化学]