Role of polyethylene glycol in formation and structure of regenerated cellulose microporous membrane
文献类型：期刊论文
| 作者 | Yang, G; Zhang, LN; Feng, HQ |
| 刊名 | JOURNAL OF MEMBRANE SCIENCE
 |
| 出版日期 | 1999-08-01 |
| 卷号 | 161期号:1-2页码:31-40 |
| 关键词 | regenerated cellulose microporous membrane polyethylene glycol morphology pore size supermolecular structure |
| 英文摘要 | Porous formation and supermolecular structure of regenerated cellulose (RC) microporous membranes prepared by coagulating mixture solution of cellulose cuoxam and polyethylene glycol (PEG400, PEG2000, PEG6000 and PEG20000) were investigated. SEM showed that the cellulose cuoxam/PEG mixture solution formed a homogeneous blend, and the miscibility between cellulose and PEG decreased with increasing molecular weight (M-w) of PEG. The mixture solutions exhibited homogeneous particles in aqueous 10 wt.% NaOH solution, and a smooth surface of RC membrane was observed after immersing in 5 wt.% H2SO4, suggesting that a new molecular architecture of cellulose is formed during the H2SO4 coagulation process. With an increase in M-w of PEG, crystallinity chi(c) slightly decreased, while (1 (1) over bar 0) plane orientation parameter f(//)(1 (1) over bar 0) of the membranes increased. The C-13 CP/MAS NMR spectra indicated that the PEG molecules as pore former were completely removed from the membranes mixed with PEG400, while only 4 wt.% PEG remained in the membranes mixed with PEG2000, PEG6000 and PEG20000. The results of a spin-lattice relaxation suggested that intramolecular hydrogen bonds of cellulose molecules in the membranes decreased, and inter-molecular hydrogen bonds increased, when M-w of PEG increased. M-w of PEG plays an important role in the morphology, structure and the pore size of the microporous cellulose membranes. (C) 1999 Elsevier Science B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Chemical ; Polymer Science |
| 研究领域[WOS] | Engineering ; Polymer Science |
| 关键词[WOS] | CUPRAMMONIUM SOLUTION ; BLEND MEMBRANES ; MORPHOLOGY ; POLYMER ; CUOXAM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000081553500004 |
| 公开日期 | 2015-12-01 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8448]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, G,Zhang, LN,Feng, HQ. Role of polyethylene glycol in formation and structure of regenerated cellulose microporous membrane[J]. JOURNAL OF MEMBRANE SCIENCE,1999,161(1-2):31-40. |
| APA | Yang, G,Zhang, LN,&Feng, HQ.(1999).Role of polyethylene glycol in formation and structure of regenerated cellulose microporous membrane.JOURNAL OF MEMBRANE SCIENCE,161(1-2),31-40. |
| MLA | Yang, G,et al."Role of polyethylene glycol in formation and structure of regenerated cellulose microporous membrane".JOURNAL OF MEMBRANE SCIENCE 161.1-2(1999):31-40. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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