Synthesis of poly(ester-imide)s from bis(4-amino-3,5-dimethyl phenyl) 4? bromophenyl methane and 2,6-diaminopyridine

Authors

  • Y. Christabel Shaji  Department of Chemistry, Holy Cross College (Autonomous), Nagercoil, Tamil Nadu, India
  • G. Leema Rose  Department of Chemistry, Holy Cross College (Autonomous), Nagercoil, Tamil Nadu, India
  • S. Ajith Sinthuja  Department of Chemistry, Holy Cross College (Autonomous), Nagercoil, Tamil Nadu, India

Keywords:

2, 6-diaminopyridine, 1,4-dihydroxy benzene, pyromellitic dianhydride, tetrimide- diacid chlorides, thermal stability, UV-visible spectroscopy, BTDA.

Abstract

A series of thermally stable and organosoluble poly(ester-imide)s were synthesized by polycondensation of tetrimide dicarboxylic acid chlorides containing an internal imide group with 1,4-dihydroxy benzene. The tetrimide dicarboxylic acid chlorides were synthesized by reacting the commercially available monomer 2,6-diaminopyridine and a newly synthesized monomer bis(4-amino-3,5-dimethyl phenyl) 4? bromophenyl methane with two different dianhydrides, pyromellitic dianhydride (PMDA) and 3,3?4,4?-benzophenone tetracarboxylic dianhydride (BTDA) and p-amino benzoic acid followed by refluxing with thionyl chloride. The synthesized polymers were characterized by elemental analysis, FTIR, 1H NMR and UV-visible spectroscopy TGA, DSC and XRD studies. Thermal stability and the weight-loss behavior of poly(ester-imide)s were studied by TGA. T10% temperature of the polymers ranged from 380–471° C in nitrogen atmosphere. The glass transition temperatures (Tg) of the polymers ranged from 245–306° C. All the poly(ester-imide)s synthesized are amorphous in nature. The synthesized polymers showed excellent solubility in common organic solvents, such as pyridine, chloroform, tetrahydrofuran, and m-cresol, as well as in polar organic solvents, such as N-methyl-2-pyrrolidone, N,N-dimethyl acetamide, N,N-dimethylformamide, and dimethyl sulfoxide.

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International Journal of Scientific Research in Science and Technology

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Published

2018-02-28

Issue

Volume 4, Issue 2, January-February-2018

Section

Research Articles

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How to Cite

[1]
Y. Christabel Shaji, G. Leema Rose, S. Ajith Sinthuja "Synthesis of poly(ester-imide)s from bis(4-amino-3,5-dimethyl phenyl) 4? bromophenyl methane and 2,6-diaminopyridine " International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011,Volume 4, Issue 2, pp.571-578, January-February-2018.