全文下载:
202605010.pdf
文章编号:1672-6987(2026)05-0082-08;DOI:10. 16351/j. 1672-6987. 2026. 05. 010
杨 洋,姜琰锋,高爱林* ,闫业海* (青岛科技大学 高分子科学与工程学院,山东 青岛 266042)
摘 要:为解决界面缩聚过程中多元胺水溶液无法在疏水性聚乙烯(PE)膜表面浸润铺展的问 题,本研究提出一种反向界面缩聚法,将反应区域限制在聚合物膜基体的下皮层处。同时在多 元胺反应液中引入带有磺酸基团的 2,4-二氨基苯磺酸(DABS)单体,与哌嗪(PIP)一起参与界 面缩聚反应,获得具有更高表面亲水性的 PE/磺化聚酰胺(SPA)复合膜。实验表明,单一 DABS 单体与均苯三甲酰氯(TMC)反应很难在基膜表面形成致密连续的选择分离层,而采用 DABS 与 PIP 双单体可有效解决上述问题。特别地,当 m(DABS)∶m(PIP)为 5∶5时获得的 PE/ SPA 复合膜拥有最佳的综合性能:SPA 选择分离层致密连续,且仅存在于复合膜的下表面;表现 出最佳的亲水性,其水接触角仅有 32. 6°;具有优异的水蒸气透过性能,水蒸气透过率(24 h)达到 (3 625. 11±124)g ·m-2 ,同时致密 SPA 层的存在也保障了较好的二氧化碳(CO2)阻隔性能, CO2透过率(24 h,0. 1 MPa)降低到 2. 14×106 cm3 ·m-2 。
关键词:透湿阻气;界面缩聚;磺化聚酰胺;非对称复合膜
中图分类号:O 629. 9 文献标志码:A
引用格式:杨洋,姜琰锋,高爱林,等 . 界面缩聚法制备聚乙烯/磺化聚酰胺复合膜及其透湿 阻气性能研究[J]. 青岛科技大学学报(自然科学版),2026,47(5):82-89.
YANG Yang, JIANG Yanfeng, GAO Ailin, et al. Preparation of polyethylene/sulfonated polyamide composite membrane by interfacial polycondensation and its moisture and air permeability properties[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition),2026,47(5):82-89.
Preparation of Polyethylene/Sulfonated Polyamide Composite Membrane by Interfacial Polycondensation and Its Moisture and Air Permeability Properties
YANG Yang,JIANG Yanfeng,GAO Ailin,YAN Yehai (College of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract:In order to address the problem that the aqueous diamine solution cannot infiltrate and spread onto the surface of the hydrophobic polyethylene (PE) membrane during interfacial polycondensation, a reverse interfacial polycondensation method was proposed to restrict the reaction area to the bottom surface of the polymeric membrane matrix. In addition,2,4- diaminobenzene sulfonic acid (DABS) monomer with sulfonic acid group was introduced into the diamine solution to participate in interfacial polycondensation reaction with benzyltrichloryl chloride (TMC) to obtain PE/sulfonated polyamide (SPA) composite membrane with better surface hydrophilicity. The experimental results show that a single DABS monomer can hardly form a continuous and compact selective separation layer on the surface of the membrane in response to homogenized TMC. Specifically, the PE/SPA composite membranes obtained when m(DABS)∶m(PIP) was 5∶5 had the best comprehensive properties: the SPA separation layers were compact and continuous and only existed on the skin surface of the composite membrane, which exhibited the best hydrophilicity with a water contact angle of only 32. 6°. It presented an excellent water vapour permeability (24 h) of (3 625. 11 ± 124)g · m-2 , while the presence of a dense SPA layer also ensured a better performance of the carbon dioxide (CO2) barrier, with CO2 permeability (24 h,0. 1 MPa) of 2. 14 × 106 cm3 ·m-2 .
Key words:moisture permeability and air barrier; interfacial polycondensation; sulfonated polyamide; asymmetric composite membrane
收稿日期:2025-10-14
基金项目:国家自然科学基金项目(52173204).
作者简介:杨 洋(1998—),男,硕士研究生 . *通信联系人 .