Synthesis and characterization of aromatic polyamides containing an s-triazine ring with thiophenoxy linkages

TitleSynthesis and characterization of aromatic polyamides containing an s-triazine ring with thiophenoxy linkages
Publication TypeJournal Article
Year of Publication2005
AuthorsPal, RR, Patil, PS, Salunkhe, MM, Maldar, NN, Wadgaonkar, PP
JournalPolymer International
Volume54
Issue3
Pagination569-575
Date PublishedMAR
Type of ArticleArticle
ISSN0959-8103
Keywords2, 4-bis-(3/4-carboxyphenoxy)-6-thiophenoxy-s-triazine, direct polycondensation, polyamide, s-triazine ring
Abstract

A series of aromatic polyamides containing an s-triazine ring with thiophenoxy linkages was synthesized from two new diacids, namely 2,4-bis-(4-carboxyphenoxy)-6-thiophenoxy-s-triazine and 2,4-bis-(3-carboxyphenoxy)-6-thiophenoxy-s-triazine, and commercially available aromatic diamines by using Yamazaki's phosphorylation reaction. The polyamides were obtained in good yields and were characterized by solubility tests, viscosity measurements, FTIR, H-1 and C-13 NMR spectroscopy, X-ray diffraction studies and thermogravimetric analysis. The polyamides were found to have inherent viscosities in the range of 0.35 to 0.56 dl g(-1) in N,N-dimethylacetamide (DMAc) at 30 +/- 0.1 degreesC. All the polyamides were readily soluble in solvents such as DMAc, N-methyl-2-pyrrolidone (NMP), N,N-dimethylformamide (DMF) and m-cresol. Thermogravimetric analysis of the polyamides indicated no weight loss below 345 degreesC under a nitrogen atmosphere. (C) 2004 Society of Chemical Industry.

DOI10.1002/pi.1733
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

2.414

Divison category: 
Polymer Science & Engineering