摘要
采用相转化法并分别以90%(体积含量,下同)N-甲基吡咯烷酮(NMP)水溶液和纯水为芯液,通过一步成型制备了多孔氧化钇稳定氧化锆(YSZ)中空纤维陶瓷膜,对制备的膜进行了微观结构、纯水渗透性和抗弯强度等表征,探讨了两种不同的膜微观结构形成过程与机理。结果表明,芯液组成对膜微观结构与性能有着重要影响,以90%NMP溶液代替纯水作为芯液时制备的YSZ中空纤维膜呈高度非对称结构,由大孔层和薄的内外皮层构成,具有优异的渗透性能和较高的机械强度等。
Yttria-stabilized zirconia (YSZ) hollow fiber membranes were prepared in one step by the phase inversion method and using a 90% (volume content, the same below) NMP aqueous solution and pure water as internal coagulant, respectively. The microstructure, pure water flux and bending strength were characterized for the prepared hollow fiber membranes, and the forming mechanism of two different membrane microstructures was investigated. The composition of the internal coagulant has significant influences on the microstructure and properties of the prepared YSZ membranes. Highly asymmetric YSZ hollow fiber membrane can be obtained when the 90% NMP aqueous solution instead of water is used as the internal coagulant. The as-prepared membrane is composed of large finger-like structure and inner and outer thin skin layers, and exhibits excellent water permeability and high bending strength.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2011年第S1期11-14,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(51062006)
江西省自然科学基金(2009GQC0072)资助
关键词
陶瓷膜
中空纤维
氧化钇稳定氧化锆
相转化法
芯液
ceramic membrane
yttria-stabilized zirconia
hollow fiber
phase inversion
internal coagulant
