CAJ | 학술논문

以壳聚糖荷正电改性的氧化石墨烯为无机添加剂,以聚醚砜为膜材料,聚乙烯吡咯烷酮为致孔剂,以N,N-二甲基乙酰胺为溶剂,采用相转化法制备了有机无机杂化纳滤膜.考察了不同改性氧化石墨烯添加量对膜分离性能的影响.研究结果表明,随着改性氧化石墨烯含量的增加,荷正电纳滤膜的断面形态结构并未发生明显改变,但杂化膜的纯水通量、分离选择性明显增加.从研究结果可以看出,改性氧化石墨烯的最佳添加质量分数在0.5%左右.
이각취당하정전개성적양화석묵희위무궤첨가제,이취미풍위막재료,취을희필각완동위치공제,이N,N-이갑기을선알위용제,채용상전화법제비료유궤무궤잡화납려막.고찰료불동개성양화석묵희첨가량대막분리성능적영향.연구결과표명,수착개성양화석묵희함량적증가,하정전납려막적단면형태결구병미발생명현개변,단잡화막적순수통량、분리선택성명현증가.종연구결과가이간출,개성양화석묵희적최가첨가질량분수재0.5%좌우.
Graphene oxide( GO) has received tremendous attention thanks to its unique two-dimensional fea-ture, fantastic mechanical and chemical properties. In this paper, GO was fabricated and then was modified by chitosan. After the quaternization of modified GO, the positively charged material was used as inorganic ad-ditive to prepare polyethersulfone ( PES ) hybrid nanofiltration membrane with phase inversion method using N,N-dimethylacetamide( DMAc) as solvent, polyvinylpyrrolidone( PVP) as pore-forming agent. The effect of modified GO content on the separating property of hybrid membranes was investigated. The results suggested that the positively charged nanofiltration membranes were prepared successfully without the changes of mor-phology. With the increase of modified GO content, the water flux and separation selectivity of hybrid mem-branes were improved significantly and it was proposed that the best additive quantity of modified GO was round 0. 5%( mass fraction) .