Synthesis and properties of new polybenzoxazines containing (substituted) cyclohexyl moieties

A series of new polybenzoxazines were synthesized based on diphenols containing (substituted) cyclohexyl moiety and were characterized by FT‐IR, 1H‐NMR, and 13C‐NMR spectroscopy. These new benzoxazine monomers exhibited better processability with lower peak cure temperature and a wide cure controlla...

Full description

Saved in:
Bibliographic Details
Published in:Polymers for advanced technologies 2009-12, Vol.20 (12), p.1107-1113
Main Authors: Kumar, K. S. Santhosh, Nair, C. P. Reghunadhan, Ninan, K. N., Kulkarni, A. D., Wadgaonkar, P. P.
Format: Article
Language:English
Subjects:
Benzoxazines
Bisphenols
Calorimetry
Contact angle
Cures
hydrophobicity
Polybenzoxazines
Polymers
Spectroscopy
thermally stable polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A series of new polybenzoxazines were synthesized based on diphenols containing (substituted) cyclohexyl moiety and were characterized by FT‐IR, 1H‐NMR, and 13C‐NMR spectroscopy. These new benzoxazine monomers exhibited better processability with lower peak cure temperature and a wide cure controllable window (CCW) as manifested in differential scanning calorimetric analysis. The cure analysis was performed by FT‐IR spectroscopy. Glass transition temperature of new polybenzoxazines varied from 170 to 205°C. The cyclohexyl bridge groups facilitated ring opening, resulting in polymer with improved thermal stability in comparison to bisphenol A‐based benzoxazine as assessed by the various thermal analyses. The water contact angles of polybenzoxazines containing (substituted) cyclohexyl moieties were higher than that of bisphenol A‐based polybenzoxazine, implying their higher hydrophobicity. Copyright © 2009 John Wiley & Sons, Ltd.
ISSN:1042-7147
1099-1581
1099-1581
DOI:10.1002/pat.1370