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Guo, Fei

Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates


Gender:Male
Alma Mater:Brown University
Degree:Doctoral Degree
School/Department:School of Energy and Power Engineering
Discipline:Thermal Engineering. Chemical Engineering. Materials Surface Engineering
Contact Information:www.guoflab.com
E-Mail:feiguo@dlut.edu.cn
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DVB改性超疏水纤维膜及其在膜蒸馏中的应用

Hits : Praise

Indexed by:期刊论文

Date of Publication:2018-09-13

Journal:膜科学与技术

Volume:38

Issue:5

Page Number:104-112

ISSN No.:1007-8924

Key Words:聚丙烯腈;静电纺丝;疏水改性;膜蒸馏;脱盐

Abstract:以安全无毒的低能量单体二乙烯基苯(DVB)取代1H,1H,2H,2H-全氟癸基丙烯酸酯(PFDA),作为引发式化学气相沉积的前驱材料,成功地将通过静电纺丝技术制备的聚丙烯腈(PAN)纤维膜由亲水膜改性为超疏水膜,并应用于膜蒸馏中.采用扫描电镜、接触角测定仪、水力穿透压测试装置、原子力显微镜等对改性前后纤维膜的表面形貌、润湿性、水力穿透压、厚度变化等参数进行表征.将改性后的纤维直径在0.23~0.81 μm的PAN纤维膜用于气隙式膜蒸馏实验.结果表明,静电纺丝纤维膜呈无纺结构,疏水化改性后纤维膜形貌无明显变化,料液侧与渗透侧温差为13~59℃时,渗透通量为1.5~22 kg/(m2·h),脱盐率均在99.9%以上.随着纤维丝直径的减小,孔隙率、水接触角,以及水力穿透压均有所增加.纤维直径对膜蒸馏过程中的渗透通量、脱盐率和水力穿透压起到重要作用.