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Dyuthi @ CUSAT >
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Dr. Sreekumar K >
Please use this identifier to cite or link to this item:
http://purl.org/purl/4014
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| Title: | Synthesis and Properties of Polyurethanes of Hexamethylene Di-Isocyanate with Multifunctional Chromophores in the Main Chain |
| Authors: | Sreekumar, K
Sudheesh Kumar, K |
| Keywords: | bis(azo)
bis(o-nitrobenzyl)
hexamethylene di-isocyanate
polyaddition
polyurethanes |
| Issue Date: | 1-Jun-2007 |
| Publisher: | Taylor & Francis |
| Abstract: | Various polyurethanes containing photoactive bis(azo) and bis(o-nitrobenzyl)
groups in the main chain were synthesized by polyaddition reactions of diols such
as bis(4-hydroxyphenylazo)-2,20-dinitrodiphenylmethane, 4-hydroxy-3-methylphenylazo-
40-hydroxyphenylazo-2,20-dinitrodiphenylmethane and bis(4-hydroxy-3-
methylphenylazo)-2,20-dinitrodiphenylmethane with hexamethylene di-isocyanate
(HMDI), in dimethyl acetamide (DMAc) in the presence of di-n-butyltin dilaurate
(DBTDL) as catalyst. All of them were characterized by IR, UV-vis, 1H NMR and
13C NMR spectra and also by thermogravimetric analysis (TGA), differential scanning
calorimetry (DSC) and gel permeation chromatography (GPC). |
| Description: | International Journal of Polymeric Materials, 58:160–166, 2009 |
| URI: | http://dyuthi.cusat.ac.in/purl/4014 |
| ISSN: | 0091-4037 print=1563-535X online |
| Appears in Collections: | Dr. Sreekumar K
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