CAJ | 학술논문

采用共混法和溶胶-凝胶法制备了纳米SiO_2有机杂化膜,考察了制备方法和SiO_2的性质对杂化膜结构和性能的影响.结果表明:采用溶胶-凝胶技术制备的杂化膜同共混法得到的杂化膜及未杂化膜相比,机械性能明显提高,膜微观结构改善,并表现出良好的气体分离性能.此外,杂化膜中无机相的负载量也是一个影响杂化膜结构和性能的重要因素,当正硅酸乙酯的添加量为30%(wt)时,杂化膜的综合性能较为理想.
채용공혼법화용효-응효법제비료납미SiO_2유궤잡화막,고찰료제비방법화SiO_2적성질대잡화막결구화성능적영향.결과표명:채용용효-응효기술제비적잡화막동공혼법득도적잡화막급미잡화막상비,궤계성능명현제고,막미관결구개선,병표현출량호적기체분리성능.차외,잡화막중무궤상적부재량야시일개영향잡화막결구화성능적중요인소,당정규산을지적첨가량위30%(wt)시,잡화막적종합성능교위이상.
Nano-silica hybrid asymmetric membranes were prepared and characterized. The effects of the prepara-tion methods and the character of the silica on their properties were investigated. The experimental results showed that the nano-silica hybrid membranes by the sol-gel process of tetraethoxysilane (TEOS) were provided with the strengthened me-chanical properties, well modified structure and good gas separation performance as compared with the hybrid membrane produced by blending procedure and the polymer membrane. Moreover, the loading amount of the inorganic phase was an-other important factor on the properties of the hybrid membrane, and the comprehensive performance was obtained when the addition amount of TEOS was around 30% based on the polymer content.