摘要
采用相转化法制备了聚砜/蒙脱土纳米复合超滤膜,并通过死端过滤的方式评价复合膜的透水及抗污染性能。在纳米复合膜的制备过程中,采用有机蒙脱土(OMMT)作为添加剂,用聚乙烯吡咯烷酮(PVP)来提高有机蒙脱土粒子在聚砜膜基体中的分散性。对复合膜进行了FT-IR、WAXRD和SEM测试,结果表明有机蒙脱土存在于膜表面并较好地分散于聚砜膜基体中。水处理超滤实验表明,聚砜/蒙脱土纳米复合超滤膜的水通量可由原来的122.37 L.m-2.h-1提高至253 L.m-2.h-1,接触角可降低至60.5°,说明有机改性蒙脱土的掺杂能够大幅度提高聚砜超滤膜的水透过性能及抗污染特性。
Polysulfone/montmorrilonite （PSU/MMT） nanocomposite membrane was prepared by wet phase inversion technique and its enhanced performance for water treatment was investigated through dead-end filtration method. Organo-modified MMT （OMMT） was adopted as the filler in polysulfone membrane and polyvinylpyrrolidone （PVP） was used to assist the dispersion of OMMT particles during the process of nanocomposite membrane preparation. Nanocomposite membrane was characterized by FTIR, WAXRD and SEM. The results indicated that OMMT existed and dispersed well in polysulfone membrane. The water flux of PSU/OMMT nanocomposite membrane could be improved from 122. 37 Lm^-2h^-1 to 253 Lm^-2h^-1, while the contact angle could be reduced to 60. 5°. Therefore, water permeability and anti-fouling performance of PSU membrane were enhanced through OMMT addition.
出处
《黑龙江大学自然科学学报》
CAS
北大核心
2013年第1期107-112,共6页
Journal of Natural Science of Heilongjiang University
基金
Supported by the National Natural Science Foundation of China(50978067
50778049
51121062)
the Ministry of Science and Technology of China(2009AA06Z310
2009ZX07424005
2009ZX07424-006)
关键词
亲水化
蒙脱土改性
分散
纳米复合膜
抗污染
hydrophilicity
montmorillonite modification
dispersion
nanocomposite membrane
anti -fouling
