基于聚合物中空微球构建膜内纳米空腔及其对气体渗透性能的影响
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摘要
分别以四氢呋喃丙烯酸酯和双季戊四醇六丙烯酸酯为油相反应单体和交联剂,利用界面引发剂在无表面活性剂微乳液油水界面处引发聚合,制备了中空微球,浇铸形成具有纳米空腔的中空微球膜.考察了膜内纳米空腔对分离膜气体渗透性和分离性的影响.结果表明,制备的中空微球平均粒径为116. 7 nm,中空结构明显,壳层厚度为10～20 nm;中空微球膜的渗透分离性能较壳层材料的本征值有显著提升,在35℃,0. 2 MPa条件下,CO_2的渗透系数增大1. 4～5. 7倍,且分离系数也有所提升.
Hollow polymer microspheres were prepared by polymerization of tetraethylane and dipentaerythritol hexaacrylate at the oil-water interface of surfactant-free microemulsion using the interfacial initiator. The membranes with nanocavities were formed by casting the hollow microspheres microemulsion and the effects of the nanocavities on the gas permeability and selectivity of the separation membrane were investigated. The results show that the resulting hollow microspheres have an average size of 116. 7 nm,and a hollow structure with a shell thickness of 10—20 nm. The permeability of membranes with nanocavities increased significantly compared with the intrinsic permeability of shell material. At 35 ℃,0. 2 MPa,the permeability coefficient of CO2 of hollow microspheres membranes increased by 1. 4—5. 7 times and the separation coefficient also improved.
Hollow polymer microspheres were prepared by polymerization of tetraethylane and dipentaerythritol hexaacrylate at the oil-water interface of surfactant-free microemulsion using the interfacial initiator. The membranes with nanocavities were formed by casting the hollow microspheres microemulsion and the effects of the nanocavities on the gas permeability and selectivity of the separation membrane were investigated. The results show that the resulting hollow microspheres have an average size of 116. 7 nm,and a hollow structure with a shell thickness of 10—20 nm. The permeability of membranes with nanocavities increased significantly compared with the intrinsic permeability of shell material. At 35 ℃,0. 2 MPa,the permeability coefficient of CO2 of hollow microspheres membranes increased by 1. 4—5. 7 times and the separation coefficient also improved.
引文
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[2] Hirayama Y.,Kase Y.,Tanihara N.,Sumiyama Y.,Kusuki Y.,Haraya K.,Journal of Membrane Science,1999,160(1),87—99
[3] Liu J.,Hou X.,Park H. B.,Lin H.,Chemistry,2016,22(45),15980—15990
[4] Wang S.,Li X.,Wu H.,Tian Z.,Xin Q.,He G.,Energy&Environmental Science,2016,9(6),1863—1890
[5] Dong Z. F.,Membrane Science and Technology,2000,3(3),38—43(董子丰.膜科学与技术,2000,3(3),38—43)
[6] Zheng L. Y.,Polymer Bulletin,1999,(3),134—137(郑领英.高分子通报,1999,(3),134—137)
[7] Lu S.,Low B. T.,Chung T. S.,Greenberg A. R.,Journal of Membrane Science,327(1/2),18—31
[8] Sun C. G.,Cao Y. M.,Zuo L.,Lin B.,Jie X. M.,Yuan Q.,Chem. J. Chinese Universities,2005,26(11),129—134(孙承贵,曹义鸣,左莉,林斌,介兴明,袁权.高等学校化学学报,2005,26(11),129—134)
[9] Robeson L. M.,Journal of Membrane Science,2008,320(1),390—400
[10] Zhao H. Y.,Cao Y. M.,Kang G. D.,Ding X. L.,Yuan Q.,Membrane Science and Technology,2011,31(3),18—24(赵红永,曹义鸣,康国栋,丁晓莉,袁权.膜科学与技术,2011,31(3),18—24)
[11] Yang C. H.,Man C. L.,Xue W. L.,Wang T.,Chen D.,Chen Q.,Wu L. G.,Chem. J. Chinese Universities,2017,38(4),686—693(杨彩虹,满春利,薛琬蕾,王挺,陈迪,陈潜,吴礼光.高等学校化学学报,2017,38(4),686—693)
[12] Yang P. P.,Ding X. L.,Zhao H. Y.,Hua M. M.,Zhang Y. Z.,Wang L. N.,Membrane Science and Technology,2016,36(4),14—18(杨平平,丁晓莉,赵红永,华明明,张玉忠,王丽娜.膜科学与技术,2016,36(4),14—18)
[13] Lin H.,Van Wagner E.,Swinnea J. S.,Freeman B. D.,Pas S. J.,Hill A. J.,Journal of Membrane Science,2006,276(1),145—161
[14] Li S. L.,Chen E. F.,Chemical Industry and Engineering Progress,2013,32(9),2180—2184(李素莲,陈尔凡.化工进展,2013,32(9),2180—2184)
[15] Wang W.,Chen X.,Cai Q.,Mo G.,Chen Z. J.,Li Z. H.,Zhang K. H.,Wu Z. H.,Nuclear Techniques,2007,(7),571—575(王维,陈兴,蔡泉,默广,陈中军,李志宏,张坤浩,吴忠华.核技术,2007,(7),571—575)
[16] Zhang J. Y.,Zheng Y.,Zhu R. Z.,Modern Scientific Instruments,2003,(2),3—8(张晋远,郑毅,朱瑞珍.现代科学仪器,2003,(2),3—8)
[17] Li Z. H.,Liu Y.,Acta Physica Sinica,2000,49(4),775—780(李志宏,柳义.物理学报,2000,49(4),775—780)
[18] Liu J.,Han B.,Zhang J.,Li G.,Zhang X.,Wang J.,Chemistry:A European Journal,2002,8(6),1356—1360
[19] Lin H.,Kai T.,Freeman B. D.,Sumod Kalakkunnath A.,Kalika D. S.,Macromolecules,2005,38(20),8381—8393
[20] Pixton M. R.,Paul D. R.,Journal of Polymer Science,Part B:Polymer Physics,1995,33(7),1135—1149