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Mechanically robust thermally rearranged (TR) polymer membranes with spirobisindane for gas separation  
Mechanically robust thermally rearranged (TR) polymer membranes with spirobisindane for gas separation
資料類型: PDF文件
關(guān)鍵詞: membranes  spirobisindane  thermally  rearranged  
資料大小: 1418k
所屬學(xué)科: 高分子化學(xué)
來(lái)源: 來(lái)源網(wǎng)絡(luò)
簡(jiǎn)介:
Novel spirobisindane-containing thermally rearranged (TR) benzoxazole(spiroTR-PBO) membraneswere prepared by thermal treatment of four newly synthesized spirobisindane-containing hydroxylpolyimides (spiroHPIs). Transport properties of spirobisindane-containing polymers were investigatedalong with fractional free volume and density measurements, as well as molecular simulation analysis.The resulting spiroTR-PBOs exhibited high free volumes and superior mechanical properties in terms ofelongation and tensile strength, and these findings were supported by molecular dynamic simulations.SpiroTR-PBO membranes containing hexafluoroisopropylidene moiety in the polymer backboneshowed a six-fold increase in CO2permeability, compared to that of the spiroHPI precursor. SpiroTRPBO membranes showed strong potential to be applied in carbon capture and separation of gases because of their high gas permeability coupled with robust mechanical properties
上傳人: lishenghai
上傳時(shí)間: 2015-09-24 14:17:02
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