刚性基团桥接聚硅氧烷/乙基纤维素混合膜的制备及其CO2的分离OA北大核心CSTPCD
Preparation of rigid-group-bridged polysiloxanes/ethylcellulose mixed membranes for CO2 separation
以3种含刚性基团(六氟酰亚胺、萘基酰亚胺和芴)桥接聚硅氧烷(6FBPMS、NTBPMS和BAFBPMS)为改性剂,乙基纤维素(EC)为基质,通过溶液共混、涂敷法制备了3类不同负载量桥接聚硅氧烷的改性EC混合膜(6FBPMS/EC、NTBPMS/EC和BAFBPMS/EC).3类复合膜具有良好的成膜性,且显示出高的力学性能和热稳定性.测试了混合膜对体积比都为1∶1的混合气体对CO2/N2和CO2/CH4的透过选择性.结果表明,相较于纯EC膜,3类膜在保持选择性的同时,显示出更高的CO2透过性;特别是NTBPMS/EC混合膜,其对CO2透过性达到213 barrer以上,是纯EC的4.9倍.
Three types of rigid-group-bridged polysiloxanes-modified ethylcellulose(EC)mixed membranes were pre-pared by using three bridged-polysiloxanes with different rigid groups of hexafluoroimide,naphthalimide,and fluorene as modifiers and EC as a substrate,through solution co-blending and coating.The three mixed membranes exhibited a good film formation ability,high mechanical properties,and good thermal stability.Compared to pure EC membrane,the three mixed membranes gained an improvement in the permeability of CO2 without sacrificing selectivity(CO2/N2 and CO2/CH4).Especially,the naphthalimide bridged-polysiloxanes obtained a CO2 permeation coefficient of over 213 bar-rers,which is 4.9 times higher than pure EC membrane.
范文轩;徐双平;贾宏葛;张明宇;蘧延庆
齐齐哈尔大学材料科学与工程学院,黑龙江 齐齐哈尔 161006||黑龙江省聚合物基复合材料重点实验室,黑龙江 齐齐哈尔 161006||齐齐哈尔大学化学与化学工程学院,黑龙江 齐齐哈尔 161006齐齐哈尔大学材料科学与工程学院,黑龙江 齐齐哈尔 161006||黑龙江省聚合物基复合材料重点实验室,黑龙江 齐齐哈尔 161006
化学工程
桥接聚硅氧烷乙基纤维素混合膜气体分离
bridged-polysiloxanesethyl cellulosemixed membranegas separation
《中国塑料》 2024 (006)
51-59 / 9
国家自然科学基金青年基金(52203093);黑龙江省聚合物基复合材料重点实验室开放课题(CLKFKT2021B10)
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