%0 Journal Article
%T Synthesis and characterization of novel fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties
%A Qiu-Ying Wang
%A Shou-Ri Sheng
%A Xiao-Lan Zhang
%A Xiao-Ling Liu
%A Zhen-Zhong Huang
%J High Performance Polymers
%@ 1361-6412
%D 2019
%R 10.1177/0954008318801905
%X 4-(4-Trifluoromethylphenyl)-2,6-bis[4-(4-amino-2-trifluoromethylphenoxy)phenyl]pyridine (9FPBAPP), as a new aromatic diamine, was prepared by a modified Chichibabin reaction of 4-(4-nitro-2-trifluoromethylphenoxy)acetophenone with 4-triflouromethylbenzaldehyde, followed by a catalytic reduction. A series of fluorinated poly(ether imide)s containing pyridine and/or phenylphosphine oxide moieties were prepared from bis(3-aminophenyl)phenylphosphine oxide (BAPPO), 2,2∩-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA), and 9FPBAPP via a conventional two-step thermal imidization procedure with various mole ratios of BAPPO and 9FPBAPP. All the polymers were amorphous and soluble in common organic solvents such as N,N-dimethylacetamide and N-methyl-2-pyrrolidone and had Tg＊s of 277每285∼C, 5% weight loss temperature of 521每550∼C in nitrogen. Furthermore, high char yields and good limited oxygen index values indicated that these polymers exhibited good thermal stability and flame-retardant property. Tough and flexible polymer films also had good mechanical properties with tensile strengths of 75每99 MPa, tensile moduli of 1.1每1.6 GPa, and elongations at break of 12%每24% and low dielectric constants of 2.81每3.53 (1 MHz), as well as high optical transparency with the ultraviolet cutoff wavelength in the range of 350每384 nm
%K Fluorinated poly(ether imide)s
%K pyridine
%K phenylphosphine oxide
%K synthesis and property
%U https://journals.sagepub.com/doi/full/10.1177/0954008318801905