CO2-selective free-standing membrane by self-assembly of a UV-crosslinkable diblock copolymer
文献类型：期刊论文
| 作者 | Xue, Baolong1; Li, Xianwu1; Gao, Longcheng1; Gao, Min1; Wang, Yao1; Jiang, Lei1,2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
 |
| 出版日期 | 2012 |
| 卷号 | 22期号:21页码:10918-10923 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/c2jm31037f |
| 英文摘要 | A polyethylene oxide-b-polystyrene (PEO-b-PS) block copolymer incorporating UV-crosslinkable coumarin groups in the PS block self-assembled into a cylindrical structure with PEO cylinders perpendicular to the film surface, which exhibited excellent CO2 separation properties. The block copolymer was successfully synthesized by atom transfer radical polymerization (ATRP). The molecular characterization of the diblock copolymer was performed with H-1 nuclear magnetic resonance (NMR) and gel permeation chromatography (GPC). The UV-crosslinking of the film was monitored by UV-vis absorption spectroscopy. The cylindrical phase structure was confirmed by transmission electron microscopy (TEM). Gas permeation properties of CO2, N-2 and He were determined at different temperatures varying from 20 degrees C to 70 degrees C. Both the CO2 permeation flux and total gas selectivity increased with increasing temperature. The maximum of CO2 permeance at 70 degrees C was 20400 x 10(-6) cm(3) cm(-2) s(-1) cmHg(-1), and gas selectivity over He and N-2 was 20.1 and 27.7, respectively. It was concluded that the functional block units and self-assembled microphase structures synergetically played key roles in the high performance of the membrane. |
| 语种 | 英语 |
| WOS记录号 | WOS:000303816200068 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47919]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Gao, Longcheng |
| 作者单位 | 1.Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Sch Chem & Environm, Beijing 100191, Peoples R China 2.Chinese Acad Sci, BNLMS, Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xue, Baolong,Li, Xianwu,Gao, Longcheng,et al. CO2-selective free-standing membrane by self-assembly of a UV-crosslinkable diblock copolymer[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(21):10918-10923. |
| APA | Xue, Baolong,Li, Xianwu,Gao, Longcheng,Gao, Min,Wang, Yao,&Jiang, Lei.(2012).CO2-selective free-standing membrane by self-assembly of a UV-crosslinkable diblock copolymer.JOURNAL OF MATERIALS CHEMISTRY,22(21),10918-10923. |
| MLA | Xue, Baolong,et al."CO2-selective free-standing membrane by self-assembly of a UV-crosslinkable diblock copolymer".JOURNAL OF MATERIALS CHEMISTRY 22.21(2012):10918-10923. |
入库方式： OAI收割
来源：化学研究所
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