| 纳米二氧化硅粒子对醋酸纤维素超滤膜结构的影响 |
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| 引用本文： | 王云,李乃旭,程玲,周建成. 纳米二氧化硅粒子对醋酸纤维素超滤膜结构的影响[J]. 精细石油化工进展, 2011, 12(3): 35-37 |
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| 作者姓名： | 王云 李乃旭 程玲 周建成 |
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| 作者单位： | 东南大学化学化工学院,南京,211189 |
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| 摘 要： | 以纳米二氧化硅(SiO2)为添加剂,丙酮和N,N-二甲基甲酰胺(DMF)为共溶剂,通过相转化法制备了醋酸纤维素(CA)/纳米SiO2复合超滤膜。用扫描电镜(SEM)观察了制备的CA及CA/SiO2复合超滤膜的表面结构,讨论了纳米SiO2的加入对制膜液黏度及膜孔隙率的影响。结果表明,纳米SiO2的加入可以使制膜液的黏度增大,膜孔隙率增加,同时使膜表面的微孔数增多,膜结构得到改善。
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| 关 键 词： | 醋酸纤维素 超滤膜 纳米二氧化硅 |
Influence of Nano-sized Silicon Dioxide on Morphology and Properties of Cellulose Acetate Utrafiltration Membrane |
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| Wang Yun,Li Naixu,Cheng Ling,Zhou Jiancheng. Influence of Nano-sized Silicon Dioxide on Morphology and Properties of Cellulose Acetate Utrafiltration Membrane[J]. Advances in Fine Petrochemicals, 2011, 12(3): 35-37 |
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| Authors: | Wang Yun Li Naixu Cheng Ling Zhou Jiancheng |
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| Affiliation: | Wang Yun Li Naixu Cheng Ling Zhou Jiancheng ( School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189 ) |
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| Abstract: | Cellulose acetate （CA） / nano- silica （SiO2 ） organic -inorganic composite ultrafiltration membranes were prepared by phase -inversion method with nano -sized SiO2 particles dispersed uniformly in acetone and N,N- dimethylformamide （DMF） as co- solvent. SEM micrographs was used to observe the structures of the CA and CA/SiO2 ultrafiltration membranes. The results showed that the addition of nano - SiO2 can increase the viscosity of the membrane forming system and the porosity and the amount of micro - pore of the ultrafiltration member. The structure of the CA/SiO2 membrane is improved compared with that of the CA membrane. |
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| Keywords: | cellulose acetate utrafiltration membrane nano - silica |
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