纳米碳酸钙对nano-CaCO_(3)/PES复合膜结构与性能的影响  

Effect of nano-CaCO_(3) on structure and properties of nano-CaCO_(3)/PES composite membrane

作　　者：王玉周[1] 陈增 曹东鑫 周杰辉 安旭 马天琦 WANG Yuzhou;CHEN Zeng;CAO Dongxin;ZHOU Jiehui;AN Xu;MA Tianqi(College of Materials Science,Henan University of Engineering,Zhengzhou 450000,Henan,China)

机构地区：[1]河南工程学院材料工程学院,河南郑州450000

出　　处：《化工进展》2024年第11期6310-6316,共7页Chemical Industry and Engineering Progress

基　　金：河南省科技攻关项目(232102230024,222102320188);河南工程学院博士培育基金(D2021003)。

摘　　要：为深入了解nano-CaCO_(3)/PES复合膜的形态结构、力学性能、亲水性、分离性能和抗污染性能,通过非溶剂诱导相分离(NIPS)技术制备了nano-CaCO_(3)/PES复合膜。对复合膜的形态结构和物理化学性能以及分离性能进行了表征,重点考察了nano-CaCO_(3)质量分数对膜结构与性能的影响。结果说明了nano-CaCO_(3)在膜中均匀分散时,可有效优化膜结构,并同步提升膜的物理化学性能,提高分离效率。当nano-CaCO_(3)质量分数为0.3%时,所得到的复合膜机械强度为3.8MPa;对比纯PES材料,其机械强度增加了65%;亲水性也有效改善,纯水渗透性为450L/(m^(2)·h·bar)(1bar=105Pa),提高了1.7倍,同时保持99%以上的BSA截留率;对BSA抗污性能从48.8%显著提高至77.1%,具有良好的抗污染效果。本项研究为优化膜结构、提升膜性能方面提供了一个高效、简便的方法,在实际应用中具有重要的价值。Nano-CaCO_(3)/PES composite membrane was prepared by non-solvent induced phase separation(NIPS)technology to understand the morphology,mechanical properties,hydrophilicity,separation properties and anti-fouling properties of nano-CaCO_(3)/PES composite membrane.The morphology,physical chemistry properties and separation properties of the composite membranes were characterized.The effects of nano-CaCO_(3) weight fraction on the structure and properties of the membranes were investigated.The results showed that nano-CaCo3 could effectively optimize the structure of the membrane,and simultaneously improve the physical chemistry performance and separation efficiency.When nano-CaCO_(3) weight fraction was 0.3%,the mechanical strength of the composite membrane was 3.8MPa.Compared to pure PES materials,the mechanical strength was increased by 65%.The hydrophilicity was also improved.The permeability of pure water was 450L/(m^(2)·h·bar)(1bar=105Pa),which was increased by 1.7 times.At the same time,the retention rate of BSA was over 99%and the anti-pollution property of BSA was improved from 48.8%to 77.1%,which had good anti-pollution effect.The present study offered a highly effective and straightforward approach to optimize membrane structure and enhance membrane performance,thereby holding significant practical application value.

关 键 词：纳米碳酸钙 分散性 复合滤膜 力学性能 分离性能 抗污染性能 

分 类 号：TQ314[化学工程—高聚物工业]