| CA/PAN共混超滤膜的研制 |
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| 引用本文： | 凌爱莲. CA/PAN共混超滤膜的研制[J]. 北京工业大学学报, 1993, 19(3): 110-114. |
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| 作者姓名： | 凌爱莲 |
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| 作者单位： | 北京工业大学化学与环境工程学系 |
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| 摘 要： | 研究了CA/PAN共混超滤膜,找出合适的共混溶剂(DMF+LiCl或DMAC+LiCl),并得到3种制成截留分子量为67000的共混膜的方法:①用(DMF+LiCl):DMAC=1.5:1.0的混合溶剂,共混物浓度为16%;②用丙醇,苯,甲酰胺为第二添加剂,共混物浓度为14%;③用含某些无机盐或有机溶剂(如CaBr2,乙醇,DMF或DMAC)的溶液作凝胶介质,共混物浓度为18%,其中,以添加第二添加剂的方法最有效。
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| 关 键 词： | 共混超滤膜 共混溶剂 第二添加剂 |
| 收稿时间： | 1992-08-24 |
On Blend CA/PAN Ultraflltration Membrane |
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| Ling Ailian. On Blend CA/PAN Ultraflltration Membrane[J]. Journal of Beijing University of Technology, 1993, 19(3): 110-114. |
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| Authors: | Ling Ailian |
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| Affiliation: | Department of Chemical and Emvironmental Engineering |
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| Abstract: | The CA/PAN blend ultrafiltration membrane is studied. Some preparative methods for making a blend membrane with cut -off molecular weight 67 000 a found: ① Use (DMF+LiCl): DMAC=1.5:1.0 as blend solvent, with polymer concentration 16%. ② Apply acetone, benzol and formamine as secondary additives, with polymer concentration 14%. ③ Use aqueous solution which contains some inorganic salt or organic solvent (e.g. CaBr2, alcohol, DMF or DMAC) as gelating medium, with ploymer concentration 18%. In these methods, addition of secondary additives is the most effective. |
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| Keywords: | blend ultrafiltration membrane blend solvent secondary additiv |
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