Synthesis and Characterization of Aromatic Poly(azomethine ether)s with Different meta- and para-Phenylene Linkage Contents 


Vol. 21,  No. 2, pp. 238-244, Feb.  2020
10.1007/s12221-020-9690-5


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  Abstract

New aromatic poly(azomethine ether)s (PAMEs) bearing different meta- and para-phenylene linkage ratios in the main chains were synthesized via solution polycondensation reactions of terephthalaldehyde and/or isophthaldehyde with 3,4-diaminodiphenyl ether. The molecular structures, thermal stability, thermo-mechanical and optical properties of the synthesized PAME homopolymers and copolymers were investigated by using FT-IR, TGA, DMA, and UV-visible/ fluorescence spectroscopy, respectively. The synthesized PAMEs were characterized to be thermally stable up to ~400 oC under nitrogen or air atmosphere and to have high char residues of above 55 % at 800 oC under nitrogen condition. The DMA data revealed that the glass transition temperatures of PMAEs are in the range of 150-200 oC, depending on the relative contents of meta- and para-phenylene linkages. The maximum absorption wavelength of transparent yellowish PAME films was detected at 410짹10 nm. In addition, all PAME films exhibited a broad visible emission band at 500-800 nm and two infrared emission bands at 800-1400 nm. The synthesized PAMEs with high thermal stability and thermo-mechanical performance can be thus used as functional polymeric materials for technical fibers, optoelectronic films, and carbon fiber precursors.

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  Cite this article

[IEEE Style]

Y. C. Choi, M. S. Kim, K. M. Ryu, S. H. Lee, Y. G. Jeong, "Synthesis and Characterization of Aromatic Poly(azomethine ether)s with Different meta- and para-Phenylene Linkage Contents," Fibers and Polymers, vol. 21, no. 2, pp. 238-244, 2020. DOI: 10.1007/s12221-020-9690-5.

[ACM Style]

Young Chul Choi, Min Su Kim, Kyoung Moon Ryu, Sang Hoon Lee, and Young Gyu Jeong. 2020. Synthesis and Characterization of Aromatic Poly(azomethine ether)s with Different meta- and para-Phenylene Linkage Contents. Fibers and Polymers, 21, 2, (2020), 238-244. DOI: 10.1007/s12221-020-9690-5.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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