Synthesis and Properties of Poly(urethane-imide) Interpenetrating Network membrane

doi:10.1016/j.desal.2007.09.042

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Periodical Articles > Item 310902800/21680

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題名:	Synthesis and Properties of Poly(urethane-imide) Interpenetrating Network membrane
作者:	Mei-Hui Tsai Shih-Liang Huang Shu-Jhuan Liu Chiou-Jey Chen Pei-Jyun Chen Shih-Hsiung Chen
貢獻者:	環境工程與科學系
關鍵詞:	Polyimide Polyurethane Poly(urethane-imide) DMA TGA Morphology Gas separation
日期:	2008-12
上傳時間:	2009-10-05 14:12:56 (UTC+8)
摘要:	Poly(urethane-imide) (PUI) membranes are prepared by blending polyurethane (PU) prepolymer with different ratio of poly(amide acid) (PAA). PU prepolymer are synthesized by two-stages process with hydroxyl-terminated polybutadiene (HTPB), 4,4´-dicyclohexylmethane diisocyanate (H12MDI) and 1,4-butane diol (1,4-BD). While 4,4´-diaminodiphenyl ether (ODA) and 3,3´–4,4´-benzophenonetetracarboxylic dianhydride (BTDA) are reacted to forming the polyimide (PI) oligomer solution of poly(amide acid) (PAA). IPN structures are formed through reaction between PU prepolymer and PAA and unsaturated CC double bond between different HTPB segment of PU. All PUI membranes show three steps of weight loss curves and PI shows one step weight loss curve by thermogravimetric analysis (TGA). Compositions lower than 50 wt.% of PU content (0.5-PUI) possess better compatibility between PU and PI and the glass transition temperature of PU hard segment (Tgh) of PUI membranes disappeared. The Tgh values, maximum degradation temperature and char yield of PUI membranes are increased as the increase of PI content. The gas permselectivities of 0.5-PUI are 12 times than that of pure PI.
關聯:	Desalination 233(1-3)：p.191-200
顯示於類別:	[Dept. of Environmental Engineering and Science (including master's program)] Periodical Articles

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