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材料导报  2020, Vol. 34 Issue (Z2): 534-538    
  高分子与聚合物基复合材料 |
聚丙烯/乙烯-乙烯醇共聚物中空纤维及其硬弹性行为
罗大军1,2, 秦舒浩2, 伍剑明1, 李杨1, 高进1
1 贵州理工学院材料与冶金工程学院,贵阳 550003
2 国家复合改性聚合物材料工程技术研究中心,贵阳 550014
Polypropylene/Ethylene-vinyl Alcohol Copolymer Hollow Fibers and Its Hard Elastic Behavior
LUO Dajun1,2, QIN Shuhao2, WU Jianming1, LI Yang1, GAO Jin1
1 School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang 550003, China
2 National Engineering Research Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China
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摘要 以聚丙烯(PP)为基体,乙烯-乙烯醇共聚物(EVOH)为亲水第二相聚合物制备PP/EVOH共混物,通过聚丙烯接枝马来酸酐(PP-g-MAH)改善两相相容性,并结合熔融纺丝技术制备具有硬弹性的亲水PP/EVOH中空纤维。结合水接触角和EDS分别考察EVOH的引入对PP基体及中空纤维亲水性的影响;采用DSC研究EVOH引入后PP/EVOH中空纤维中PP相的结晶行为,进而通过测试PP/EVOH中空纤维的力学性能及弹性回复率等性能,综合研究PP/EVOH中空纤维的硬弹性行为。结果表明,随着EVOH比例增加,PP/EVOH中空纤维表面含氧量最高为5.65%(质量分数),纤维亲水性得到有效改善。PP-g-MAH引入使PP相结晶受阻,导致PP/EVOH中空纤维硬弹性变弱。尽管加入EVOH可以起到异相成核和促进结晶的作用,使PP/EVOH中空纤维仍然具有良好的硬弹性,但仍然弱于纯PP中空纤维。
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罗大军
秦舒浩
伍剑明
李杨
高进
关键词:  聚丙烯  乙烯-乙烯醇共聚物  中空纤维  硬弹性行为  亲水性    
Abstract: Ethylene-vinyl alcohol copolymer (EVOH) as hydrophilic modification agent and polypropylene-g-maleic anhydride (PP-g-MAH) as a compatibilizer were blended with PP to prepare hydrophilic PP/EVOH hollow fibers with hard elasticity by melt spinning. The effect of EVOH on the hydrophilicity of PP matrix and hollow fibers was investigated by WCA and EDS analysis. The crystallization behavior of PP phase in PP/EVOH hollow fibers after adding EVOH was also analyzed by DSC. In addition, the mechanical properties and elastic recovery of PP/EVOH hollow fibers were tested, and the hard elastic behavior of PP/EVOH hollow fibers was comprehensively analyzed. The results showed that the hydrophilicity of PP/EVOH hollow fibers was effectively improved with the increase of EVOH content, and the maximum surface oxygen content of the fiber was 5.65wt%. After adding PP-g-MAH, the crystallization of the PP phase was hindered, resulting in weakening of the hard elasticity of the PP/EVOH hollow fibers. Although the addition of EVOH can play the role of heterogeneous nucleation and promote crystallization, PP/EVOH hollow fibers still showed good hard elasticity. However, the hard elasticity of PP/EVOH hollow fibers were still lower than that of pure PP hollow fiber.
Key words:  polypropylene    ethylene-vinyl alcohol copolymer    hollow fiber    hard elasticity    hydrophilicity
               出版日期:  2020-11-25      发布日期:  2021-01-08
ZTFLH:  TQ325.1+4  
基金资助: 贵州省科技厅计划项目(黔科合LH字[2016]7099;黔科合基础[2019]1134)
通讯作者:  dj_luo@126.com   
作者简介:  罗大军,贵州理工学院副教授。2019年获得贵州大学材料学专业工学博士学位,期间获得博士研究生国家奖学金。以第一作者在Energy、Separation & Purification Technology、 Journal of Materials Science等国际国内学术刊物上发表学术论文10篇,申请国家发明专利6项,其中授权2项。主要从事高分子分离膜材料的制备技术及以应用为目的的分离膜结构调控、性能优化和成膜机理的理论和实验研究工作,以及储能技术的理论和实验研究工作。
引用本文:    
罗大军, 秦舒浩, 伍剑明, 李杨, 高进. 聚丙烯/乙烯-乙烯醇共聚物中空纤维及其硬弹性行为[J]. 材料导报, 2020, 34(Z2): 534-538.
LUO Dajun, QIN Shuhao, WU Jianming, LI Yang, GAO Jin. Polypropylene/Ethylene-vinyl Alcohol Copolymer Hollow Fibers and Its Hard Elastic Behavior. Materials Reports, 2020, 34(Z2): 534-538.
链接本文:  
http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2020/V34/IZ2/534
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