A new method of measuring alcohol clusters in polyimide membrane: combination of inverse gas chromatography with equilibrium swelling
文献类型：期刊论文
| 作者 | Shi BL ; Feng CS ; Wu YL |
| 刊名 | journal of membrane science
 |
| 出版日期 | 2004 |
| 卷号 | 245期号:1-2页码:87-93 |
| 关键词 | VAPOR SORPTION POLY(VINYLIDENE FLUORIDE) MECHANISTIC APPROACH CHITOSAN MEMBRANES METHANOL CLUSTERS POLAR MATERIALS PERMEATION POLYMERS SEPARATION DIFFUSION |
| ISSN号 | 0376-7388 |
| 通讯作者 | wu yl |
| 中文摘要 | a new method of measuring the mean size of solvent clusters in swollen polymer membrane is presented in this paper. this method is based on a combination of inverse gas chromatography (igc) and equilibrium swelling. the mechanism is that weight fraction activity coefficient of solvent in swollen polymer is influenced by its clusters size. the mean clusters size of solvent in swollen polymer can be calculated as the quotient of the weight fraction activity coefficient of clustering system dividing the weigh fraction activity coefficient of non-clustering system. in this experiment, the weigh fraction activity coefficient of non-clustering system was measured with igc. methanol, ethanol and polyimide systems were tested with the new method at three temperatures, 20, 40, and 60degreesc. the mean clusters size of methanol in polyimide was five, four, and three at each temperature condition, respectively. ethanol did not form clusters (the mean clusters size was one). in contrast to the inherent narrow temperature range in dsc, xrd, and ftir methods, the temperature range in igc and equilibrium swelling is broad. compared with dsc. xrd. and ftir, this new method can detect the clusters of solvent-polymer system at higher temperature. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225232600008 |
| 公开日期 | 2010-08-17 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/15821]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Shi BL,Feng CS,Wu YL. A new method of measuring alcohol clusters in polyimide membrane: combination of inverse gas chromatography with equilibrium swelling[J]. journal of membrane science,2004,245(1-2):87-93. |
| APA | Shi BL,Feng CS,&Wu YL.(2004).A new method of measuring alcohol clusters in polyimide membrane: combination of inverse gas chromatography with equilibrium swelling.journal of membrane science,245(1-2),87-93. |
| MLA | Shi BL,et al."A new method of measuring alcohol clusters in polyimide membrane: combination of inverse gas chromatography with equilibrium swelling".journal of membrane science 245.1-2(2004):87-93. |
入库方式： OAI收割
来源：长春应用化学研究所
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