相容剂对PP/PP-g-MAH/EVOH中空纤维硬弹性的影响  

Effect of Compatibilizer on Hard Elasticity of PP/PP-g-MAH/EVOH Hollow Fibers

作　　者：韦俊宇 施启富 邓露勇 张筑 罗超 高进 李杨[1] 罗大军 WEI Junyu;SHI Qifu;DENG Luyong;ZHANG Zhu;LUO Chao;GAO Jin;LI Yang;LUO Dajun(School of Materials and Energy Engineering,Guizhou Institute of Technology,Guiyang,Guizhou 550003,China;National Engineering Research Center for Compounding and Modification of Polymeric Materials,Guiyang,Guizhou 550014,China)

机构地区：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《塑料》2023年第3期43-47,共5页Plastics

基　　金：贵州省省级大学生创新创业训练计划(S202014440072);贵州理工学院学术新苗培养及探索创新项目(GZLGXM-08)。

摘　　要：采用乙烯-乙烯醇共聚物(EVOH)共混亲水改性聚丙烯(PP),并且,聚丙烯接枝马来酸酐(PP-g-MAH)作为相容剂,制备PP/PP-g-MAH/EVOH共混物,再经熔融纺丝制备具有硬弹性的PP/PP-g-MAH/EVOH中空纤维。然后,对共混物亲水性能、中空纤维微观形态和力学性能进行测试表征,分析相容剂PP-g-MAH对PP/PP-g-MAH/EVOH中空纤维亲水性与硬弹性行为的影响。结果表明,加入EVOH可以改善PP/PP-g-MAH/EVOH共混体系的亲水性,增容共混体系提高了共混体系的亲水性。PEMAH-0由于受到不相容的两相界面的影响,中空纤维的弹性回复率与强度显著降低,硬弹性较差。PP-g-MAH可以改善两相间相容性,细化EVOH的相岛结构,提高了PP/PP-g-MAH/EVOH中空纤维的强度与弹性回复率,使其具有较好的硬弹性。Hydrophilic PP/PP-g-MAH/EVOH hollow fiber with hard elasticity was prepared by melt spinning of PP modified by EVOH with PP-g-MAH as compatibilizer.The hydrophilicity of blends,microscopic morphology and mechanical properties of hollow fibers were characterized.The effects of PP-g-MAH on the hard elasticity of PP/PP-g-MAH/EVOH hollow fiber were investigated.The results showed that the hydrophilicity of PP/PP-g-MAH/EVOH blends was improved by adding EVOH.The hydrophilicity of PP/PP-g-MAH/EVOH blends also could be further improved by adding PP-g-MAH.However,elastic recovery rate and strength of PEMAH-O hollow fiber decreased due to the incompatible two-phase interface,which showd poor hard elasticity.The compatibility of PP/PP-g-MAH/EVOH hollow fibers system was improved after adding PP-g-MAH,which increased the strength and elastic recovery rate of PP/PP-g-MAH/EVOH hollow fiber.Hence,PP/PP-g-MAH/EVOH hollow fibers showed good hard elasticity after adding PP-g-MAH.

关 键 词：聚丙烯 中空纤维 硬弹性 PP-G-MAH EVOH 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]