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	Synthesis of polyimides containing fluorine and their pervaporation performances to aromatic/aliphatic hydrocarbon mixtures
	Ye, Hong ; Li, Jiding ; Lin, Yangzheng ; Chen, Jian ; Chen, Cuixian
	2010-05-07 ; 2010-05-07
关键词	polyimide synthesis pervaporation aromatic hydrocarbon SEPARATION PROPERTIES GAS SEPARATION MEMBRANES DIANHYDRIDES DEHYDRATION PERMEATION EXTRACTION Polymer Science
中文摘要	Two kinds of polyimides containing fluorine were synthesized based on dianhydride of 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) and diamines including 2,2-bis[4-(4-aminophenoxy)phenyl] hexafluoropropane (BDAF) and 2,2-bis[4-(4-aminophenoxy)phenyl]propane (BAPP) using solution condensation and following chemical imidization. The structures of 6FDA-BDAF and 6FDA-BAPP were characterized by FT-IR, NMR, and XRD. Their glass transition temperatures characterized by DSC were in the range of 235-251 degrees C, and the initial decomposition temperatures determined by TGA were over 540 degrees C. The membranes of polyimide thus obtained were employed in pervaporation separation of aromatic/aliphatic mixtures. 6FDA-BDAF membranes obtained better separation performances than 6FDA-BAPP and had a flux of 0.66 kg . mu m/m(2) . h and separation factor of 6.49 for toluene/n-heptane (20/80 wt.%) at 80 degrees C. The effects of the fluorine group on polyimides properties and separation performances were investigated.
语种	英语 ; 英语
出版者	TAYLOR & FRANCIS INC ; PHILADELPHIA ; 325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/17773]
专题	清华大学
推荐引用方式 GB/T 7714	Ye, Hong,Li, Jiding,Lin, Yangzheng,et al. Synthesis of polyimides containing fluorine and their pervaporation performances to aromatic/aliphatic hydrocarbon mixtures[J],2010, 2010.
APA	Ye, Hong,Li, Jiding,Lin, Yangzheng,Chen, Jian,&Chen, Cuixian.(2010).Synthesis of polyimides containing fluorine and their pervaporation performances to aromatic/aliphatic hydrocarbon mixtures..
MLA	Ye, Hong,et al."Synthesis of polyimides containing fluorine and their pervaporation performances to aromatic/aliphatic hydrocarbon mixtures".(2010).

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