中国塑料2025，Vol.39Issue(11)：41-46,6.DOI:10.19491/j.issn.1001-9278.2025.11.007
聚乙烯隔膜通过拉伸扩孔技术制备超滤膜及其性能研究
Preparation and performance of ultrafiltration membranes based on stretch-expanded polyethylene separators
胡玉涛 1张伦 1乔梦娇 1马克 1宋红芹 1王莉 1万彩霞2
作者信息
- 1. 乐凯胶片股份有限公司,河北省新能源膜材料技术创新中心,保定市新能源膜材料技术创新中心,河北 保定 071054
- 2. 中国科学技术大学国家同步辐射实验室,合肥 230029
- 折叠
摘要
Abstract
Conventional polyethylene(PE)membranes show promise as substrates for ultrafiltration and reverse osmosis membranes but are limited by poor hydrophilicity,low porosity,and consequently low water flux.To address these is-sues,this study investigates the effects of pore expansion via stretching and hydrophilic modification on the pore structure and water flux of PE membranes.Pore structure was tailored through a stretch-expansion process,which increased po-rosity and pore size while reducing pore tortuosity,thereby enhancing filtration efficiency.Additionally,hydrophilic mod-ification was achieved by crosslinking the membrane with a sodium polyacrylate coating.The modified membranes main-tained a high bovine serum albumin(BSA)retention rate while demonstrating significantly improved water flux.The re-sults indicated that a stretch ratio of 2 yielded optimal membrane properties,with porosity increasing to 80%and pore tor-tuosity decreasing to 1.6.The stretched and coated PE membranes exhibited markedly enhanced hydrophilicity,water flux,and BSA retention compared to unmodified PE membranes.The modified PE porous membrane can be directly ap-plied as an ultrafiltration membrane and also provides a smooth,suitable surface for interfacial polymerization,making it a promising substrate for reverse osmosis membranes.关键词
聚乙烯/隔膜/拉伸扩孔/亲水改性/聚丙烯酸钠/超滤膜Key words
polyethylene/separator/expanding holes/hydrophilic modification/sodium polyacrylate/ultrafiltration membrane分类
化学工程引用本文复制引用
胡玉涛,张伦,乔梦娇,马克,宋红芹,王莉,万彩霞..聚乙烯隔膜通过拉伸扩孔技术制备超滤膜及其性能研究[J].中国塑料,2025,39(11):41-46,6.
