NDLI: Novel soluble fluorine-containing polyamides derived from 2-(4-trifluoromethylphenoxy)terephthalic acid and trifluoromethyl-substituted aromatic bis(ether amine)s

Content Provider	Springer Nature Link
Author	Jiang, Jian Wen Pei, Xue Liang Sheng, Shou Ri Wu, Xiao Yan Liu, Xiao Ling Song, Cai Sheng
Copyright Year	2010
Abstract	A series of new fluorine-containing polyamides were prepared directly by polycondensation of 2-(4-trifluoromethylphenoxy)terephthalic acid with four trifluoromethyl-substituted aromatic bis(ether amine)s in N-methyl-2-pyrrolidone (NMP) solution containing dissolved calcium chloride using triphenyl phosphite and pyridine as condensing agents. All the polymers showed excellent solubility in solvents such as NMP, N,N-dimethylacetamide, N,N-dimethylformamide, dimethyl sulfoxide, pyridine, tetrahydrofuran, and acetone at room temperature. These polymers had inherent viscosities between 0.67 and 1.09 dL/g, and their weight-average molecular weights and number-average molecular weights were in the range of 48,200–68,000 and 29,500–39,400, respectively. The resulting polymers showed glass-transition temperatures between 189 and 214 °C and 10% weight loss temperatures ranging from 475 to 483 °C, and char yields at 800 °C higher than 50% in nitrogen. All polymers were amorphous and could be cast into transparent, flexible, and strong films from DMAc solutions with tensile strengths of 71–115 MPa, elongations at break of 6–9%, and tensile moduli of 2.7–3.2 GPa. These polymers had low dielectric constants of 3.14–3.31 (1 MHz), low moisture absorption in the range of 0.88–1.60%, and high transparency with an ultraviolet–visible absorption cut-off wavelength in the 320–340 nm range.
Starting Page	263
Ending Page	274
Page Count	12
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	67
Issue Number	2
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-11-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fluorine-containing polyamide 2-(4-Trifluoromethylphenoxy)terephthalic acid Trifluoromethyl High-temperature polymeric materials Physical Chemistry Soft and Granular Matter, Complex Fluids and Microfluidics Polymer Sciences Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

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