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聚醚砜/乙烯-丙烯酸复合膜制备及性能

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以聚醚砜(PES)为成膜基材,乙烯-丙烯酸共聚物(EAA)为添加剂,同时添加聚乙二醇(PEG)作为致孔剂,将N,N-二甲基乙酰胺(DMAc)作为溶液,通过非溶剂诱导相分离法制备了PES/EAA复合膜.研究了EAA的添加量对PES/EAA膜的渗透通量、抗污染性能、亲水性、拉伸强度等的影响,并使用扫描电子显微镜和傅里叶变换红外光谱、孔径分布测试对膜的结构进行表征及测试.结果表明,EAA有效改善了复合膜的亲水性和截留性能.当EAA的质量分数为0.8%时,PES/EAA复合膜的综合性能最佳,与PES基膜相比,PES/EAA复合膜的接触角由68.43°降低至51.81°,纯水通量由8.42 L/(m2·h)提高至153.68 L/(m2·h),对1 g/L的牛血清蛋白溶液的截留率由94.12%提高至99.32%.
Preparation and properties of polyether sulfone/ethylene-acrylic acid composite membrane
Using polyethersulfone(PES)as the film-forming substrate,ethylene-acrylic acid copolymer(EAA)as the additive,polyethylene glycol(PEG)as the porogen,and N,N-dimethylacetamide(DMAc)as the solution,PES/EAA composite membrane was prepared by non-solvent induced phase separation method.Effects of the amount of EAA on the permeation flux,anti-fouling performance,hydrophilicity and tensile strength of the PES/EAA composite membrane were studied.Scanning electron microscopy and fourier transform infrared spectrum,pore size distribution test,tensile strength,water contact angle were used to characterize and test the structure of the composite membranes.The results show that EAA effectively improves the hydrophilicity and retention performance of the composite membrane.When the mass fraction of EAA is 0.8%,the PES/EAA composite membrane has the best general properties.At this time,compared with the PES base membrane,the contact angle of the PES/EAA composite membrane is reduced from 68.43° to 51.81°.The pure water flux increases from 8.42 L/(m2·h)to 153.68 L/(m2·h),and the rejection rate of 1 g/L bovine serum albumin solution increases from 94.12%to 99.32%.

polyethersulfoneethylene acrylic copolymercomposite membraneseparation performancebovine serum albumin

杨胜龙、武晓、罗筑

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贵州大学材料与冶金学院,贵阳 550025

贵州省材料产业技术研究院,贵阳 550014

聚醚砜 乙烯丙烯酸共聚物 复合膜 分离性能 牛血清蛋白

贵州省科技成果转化项目贵州省科技成果转化项目贵州省科技成果转化项目贵州省科研机构创新能力建设项目贵州省科研机构创新能力建设项目中央引导地方资金项目

黔科合成果[2024]一般079黔科合成果[2024]一般069黔科合成果[2024]一般093黔科合服企[2023]001黔科合服企[2024]002-1黔科合中引地[2023]035

2024

工程塑料应用
中国兵器工业集团第五三研究所 中国兵工学会非金属专业委员会 兵器工业非金属材料专业情报网

工程塑料应用

CSTPCD北大核心
影响因子:0.371
ISSN:1001-3539
年,卷(期):2024.52(10)