星形多臂CO2分离膜的制备及性能研究?
作者:杨平平1,丁晓莉1,赵红永1,华明明1,张玉忠1,王丽娜2
单位: 1.天津工业大学省部共建分离膜与膜过程国家重点实验室,天津300387; 2.中国科学院大连化学物理研究所,大连 116023
关键词: 光聚合;CO2分离膜;聚环氧乙烷膜
出版年,卷(期):页码: 2016,36(4):14-18

摘要:
 以聚乙二醇甲醚丙烯酸酯为单体,双季戊四醇六丙烯酸酯为交联剂,通过自由基光聚合制备了交联聚环氧乙烷膜。考察了聚合物组成对膜密度、玻璃化转变温度、链间距和气体渗透性能等的影响。结果表明,聚合物组成对密度影响不大;随交联剂含量的增加,聚合物膜的玻璃化转变温度及链间距增大,聚合物膜的扩散系数减小,溶解度系数先减小后增大,气体渗透性减小。制备的膜材料对CO2有较好的渗透性,35 ℃、0.2 MPa下,CO2的渗透系数高达1110.89 Barrer,CO2/N2和CO2/CH4的选择性分别达到42.84和13.30。
 Series ofcross-linked poly(ethylene oxide) (PEO)membranes have been prepared byphotopolymerization of prepolymer solutions containingpoly (ethylene glycol) methyl etheracrylate(PEGMEA) used as monomeranddipentaerythritolhexaacrylate (DPHA) used as crosslinker. Effects of the composition of prepolymer solutions on the polymer density, glass transition temperature, inter-segment distance and gas permeation property wereinvestigated. Results indicated the composition of prepolymer solutionshadfew effects on the polymer density;with the increase of crosslinker DPHA content, the glass transition temperature and inter-segment distanceincreased, while the diffusion coefficient decreased, the solubility coefficient decreased and then increased, the gas permeation property decreased. Membrane materials had higher permeability for CO2, and possessedexcellent CO2 permeability coefficient of 1110.89 Barrer with CO2/N2 selectivity of 42.84 and CO2/CH4 selectivity of 13.30 at 0.2 MPa and 35℃.
第一作者简介:杨平平(1990-),女,山东济宁人,硕士,从事气体膜分离研究,E-mail:1041756208@qq.com *通讯作者,丁晓莉,E-mail:dingxiaoli@tjpu.edu.cn;

参考文献:
 [1] Zhao Juan,Wang Zhi,Wang Jixiao,et al. High-performance membranes comprising polyaniline nanoparticles incorporated into polyvinylamine  matrix  for CO2/N2 separation[J]. Journal of Membrane Science,2012,(403-404):203—215.
[2] 王志,袁芳,王明,等. 分离 CO2膜技术[J]. 膜科学与技术,2011,31(3):11—17.
[3] Lin H Q,FreemanBD. Gas Permeation and Diffusion in Cross-Linked Poly(ethylene glycoldiacrylate) [J]. Macromolecules,2006,39:3568—3580.
[4] 邱晓智,曹义鸣,王丽娜,等. 含有聚醚链段的可溶性聚酰亚胺气体分离膜材料及其性能[J]. 高等学校化学学报,2009,30(1):196—202.
[5] 邹雪娜,褚立强,徐徜徉. CO2/CH4分离膜技术在沼气提纯中的应用研究进展[J]. 膜科学与技术,2014,34(5):125—132.
[6] 任晓灵,任吉中,李晖,等. 聚醚共聚酰胺复合气体分离膜对CO2/N2分离性能的研究[J].膜科学与技术,2012,32(5):8—12.
[7] 宋成文,王同华,王秀月. 聚糠醇炭分子筛膜的制备及 O2/N2分离性能研究[J]. 高分子学报,2010,(5):609—613.
[8] 赵红永,曹义鸣,康国栋,等. 聚氧化乙烯分离膜的发展[J]. 膜科学与技术,2011,31(3):18—24.
[9] Lin H Q, Wagner EV,Swinnea JS,et al. Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers [J]. Journal of Membrane Science,2006,276:145—161.
[10] 孙家英,张立武,梅虎,等. 星形聚合物的研究与应用进展[J].化工进展,2006,25(3):281—285.
[11] 王迪. ATRP方法制备新型以卟啉为核的星型聚合物及其自组装行为研究[D]. 吉林大学,2008.
[12] Decker C,Moussa K. Photopolymerization of multifunctional monomers in condensed phase[J].Journalof AppliedPolymerScience,1987,34:1603—1618.
[13] Lin H Q, Kai T,Freeman BD,et al. The Effect of Cross-Linking on Gas Permeability in Cross-LinkedPoly(Ethylene Glycol Diacrylate) [J]. Macromolecules,2005,38:8381—8393.
[14] Ravi N,Mitra A,Hamilton P,et al. Characterization of the network properties of poly(ethylene glycol)-acrylate hydrogels prepared by variations in the ethanol-water solvent composition during crosslinking copolymerization[J].Journal of Membrane Science,Part B:PolymerPhysics,2002,40:2677—2684.
[15] Zhao H Y,Ding X L,Yang P P,et al. A novel multi-armed and star-like poly (ethylene oxide) membrane for CO2separation[J].Journal of Membrane Science,2015,489:258—263.
[16] Lin H Q,BSMS. Solubility Selective Membrane Materials for Carbon Dioxide Removal [D]. The University of Texas,Austin,2005.
[17] Simon FT,Rutherford JM,Rutherford. Crystallization and meltingbehavior of polyethylene oxide copolymers[J].Journal of Applied Physics,1964,35:82—86.
[18] 赵红永. 溶解选择性聚氧化乙烯CO2分离膜材料研究[D]. 大连:中国科学院大连化学物理研究所,2009.
[19] Breck DW. Zeolite Molecular Sieves [J]. Krieger Publishing Company,Florida,1974.
[20] Robeson LM. The upper bound revisited [J]. Journal of Membrane Science,2008,320:390-400.
 

服务与反馈:
文章下载】【加入收藏

《膜科学与技术》编辑部 地址:北京市朝阳区北三环东路19号蓝星大厦 邮政编码:100029 电话:010-64426130/64433466 传真:010-80485372邮箱:mkxyjs@163.com

京公网安备11011302000819号