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Synthesis, characterization, and acoustic properties of new soluble polyurethanes based on 2,2′-[1,4-phenylenebis(nitrilomethylylidene)diphenol and 2,2′-[4,4′-methylene-di-2-methylphenylene-1,1′-bis(nitrilomethylylidene)]diphenol

✍ Scribed by A. V. Raghu; G. S. Gadaginamath; N. Mathew; S. B. Halligudi; T. M. Aminabhavi

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
286 KB
Volume
106
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Eight novel polyurethanes based on 2,2′‐[1,4‐phenylenebis(nitrilomethylylidene)]diphenol and 2,2′‐[4,4′‐methylene‐di‐2‐methylphenylene‐1,1′‐bis(nitrilomethylylidene)]diphenol acting as hard segments with two aromatic and two aliphatic diisocyanates (4,4′‐diphenylmethane diisocyanate, toluene 2,4‐diisocyanate, isophorone diisocyanate, and hexamethylene diisocyanate) were prepared and characterized with Fourier transform infrared, UV spectrophotometry, fluorescence spectroscopy, ^1^H‐NMR and ^13^C‐NMR spectroscopy, thermogravimetric analysis, and differential thermal analysis. All the polyurethanes contained domains of semicrystalline and amorphous structures, as indicated by X‐ray diffraction. The acoustic properties and solubility parameters were calculated with the group contribution method. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007

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