Organo-soluble and transparent polyimides containing phenylphosphine oxide and trifluoromethyl moiety: Synthesis and characterization

doi:10.1016/j.eurpolymj.2009.01.017

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	Organo-soluble and transparent polyimides containing phenylphosphine oxide and trifluoromethyl moiety: Synthesis and characterization
	Li, Zhuo; Liu, Jingang; Gao, Zhiqi; Yin, Zhihua; Fan, Lin; Yang, Shiyong
刊名	EUROPEAN POLYMER JOURNAL
	2009-04-01
卷号	45 期号:4 页码:1139-1148
关键词	Polyimide Phenylphosphine Oxide Trifluoromethyl Solubility Transparency Thermal Stability
ISSN号	0014-3057
DOI	10.1016/j.eurpolymj.2009.01.017
英文摘要	A series of aromatic polyimides (PI-II(a-d)) containing lateral phenylphosphine oxide (PPO) and trifluoromethyl (-CF(3)) moiety were prepared from an aromatic diamine, 2,5-bis[(4-amino-2-trifluoromethylphenoxy)phenyl]diphenyl-phosphine oxide (BATFDPO) and various aromatic dianhydrides via a two-step chemical imidization procedure. In parallel, for comparison, another series of polyimides (PI-I(a-d)) without trifluoromethyl were synthesized from a diamine, 2,5-bis[(4-aminophenoxy)-phenyl]diphenylphosphine oxide (BAD-PO) and the same dianhydrides. It was found that both of the two series of polyimides (Pis) were soluble in polar aprotic solvents, such as N-methyl-2-pyrrolidinone (NMP) and the solubility of PI-II(a-d) was highly enhanced by the introduction of the bulky -CF(3) group. Flexible and tough PI films with tensile strengths higher than 70 MPa were cast from the PI solution. The introduction of -CF(3) moiety slightly sacrificed the thermal stability and mechanical properties of the PI films. For example. PI-II(a-d) showed 5% weight loss at 472-476 degrees C, which was about 50 degrees C lower than those of their PI-I(a-d) analogues. However, -CF(3) group apparently improved the optical transparency and decreased the refractive indices of the PI films. PI-II(d) derived from BATFDPO and 4,4'-hexafluoroisopropylidenediphthalic anhydride (6FDA) exhibited the highest optical transparency with the transmittance of 90% at 400 nm and the refractive index as low as 1.5511 at 1310 nm. (C) 2009 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000264968900021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/66545]
专题	中国科学院化学研究所
通讯作者	Liu, Jingang
作者单位	Chinese Acad Sci, Inst Chem, Lab Adv Polymer Mat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhuo,Liu, Jingang,Gao, Zhiqi,et al. Organo-soluble and transparent polyimides containing phenylphosphine oxide and trifluoromethyl moiety: Synthesis and characterization[J]. EUROPEAN POLYMER JOURNAL,2009,45(4):1139-1148.
APA	Li, Zhuo,Liu, Jingang,Gao, Zhiqi,Yin, Zhihua,Fan, Lin,&Yang, Shiyong.(2009).Organo-soluble and transparent polyimides containing phenylphosphine oxide and trifluoromethyl moiety: Synthesis and characterization.EUROPEAN POLYMER JOURNAL,45(4),1139-1148.
MLA	Li, Zhuo,et al."Organo-soluble and transparent polyimides containing phenylphosphine oxide and trifluoromethyl moiety: Synthesis and characterization".EUROPEAN POLYMER JOURNAL 45.4(2009):1139-1148.