文献类型：期刊文献

英文题名：The hydrophilic polypropylene/poly(ethylene-co-vinyl alcohol) hollow fiber membrane with bimodal microporous structure prepared by melt-spinning and stretching

作者：Luo, Dajun Xie, Gaoyi Qin, Shuhao

第一作者：Luo, Dajun

通信作者：Xie, GY[1];Qin, SH[1]|[144405fc8e0c6e3abb915]谢高艺;

机构：[1]Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China;[3]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[4]Guizhou Inst Technol, Key Lab Light Met Mat Proc Technol Guizhou Prov, Guiyang 550003, Peoples R China

第一机构：Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China

通信机构：corresponding author), Natl Engn Res Ctr Compounding & Modificat Polymer, Guiyang 550014, Peoples R China.|贵州理工学院化学工程学院

年份：2021

卷号：274

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20212510523563);Scopus(收录号：2-s2.0-85107995860);WOS:【SCI-EXPANDED(收录号:WOS:000668914600008)】；

基金：Science and Technology Planning Project of Guizhou Province (ZK [2021] General 246) ; The National Natural Science Foundation of China (51803039) ; Natural Science Research Project of Guizhou Provincial Department of Education (Qian Jiao He KY Words [2021] 256) and Academic new Seedling Cultivation and Innovation Exploration Project of Guizhou Institute of Technology (GZLGXM-06) are acknowledged for the financial support.

语种：英文

外文关键词：Hollow fiber membranes; Bimodal microporous structure; Hydrophilicity; Melt-spinning and stretching

摘要：Green and sustainable preparation of high-performance polymeric hollow fiber membranes will be more competitive in the context of advocating green manufacturing. Herein, hydrophilic polypropylene (PP)/poly (ethylene-co-vinyl alcohol) (EVOH) hollow fiber membranes (PMEVOH-HFMs) with PP grafted maleic anhydride (PP-g-MAH) as compatibilizer were prepared by melt-spinning and stretching. Due to the bimodal microporous structure of PMEVOH-HFMs, compared with PPHFM, the porosity (>80%) and pure water flux (>300% L/ (m2.h)) of PMEVOH-HFMs were significantly improved, and PMEVOH-HFMs exhibted good rejection performance (>99.5%). The regulation of bimodal microporous structure was correlated with crystallization behavior of PMEVOH blends. EVOH played an important role in heterogeneous nucleation for PP phase, which could increase nucleation density of PP phase and reduce the PP spherulite size. The pore sizes of small micropores in bimodal microporous structure of PMEVOH-HFMs were lower than PPHFM, and was similar to the variation tendency of lamellae in PMEVOH hollow fibers. The pore sizes of large micropores in bimodal microporous structure was increased due to the deterioration of system compatibility. Moreover, the rejection model and antifouling model of PMEVOH-HFMs were also established in order to better understand the characteristics of bimodal microporous structure. This work provided a new idea for green and controllable fabrication of highperformance polymeric hollow fiber membranes.