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Polymers from renewable resources. XX. Synthesis, structure, and thermal properties of semi‐interpenetrating polymer networks based on cardanol–formaldehyde‐substituted aromatic compounds copolymerized resins and castor oil polyurethanes
Author(s) -
Mohapatra D. K.,
Das D.,
Nayak P. L.,
Lenka S.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19981031)70:5<837::aid-app1>3.0.co;2-u
Subject(s) - cardanol , thermogravimetric analysis , castor oil , polyurethane , materials science , polymer , polymer chemistry , ethylene glycol dimethacrylate , formaldehyde , chemical engineering , polymerization , epoxy , organic chemistry , composite material , chemistry , methacrylic acid , engineering
A large number of improved high‐temperature stable semi‐interpenetrating polymer networks (semi‐IPNs) were synthesized by condensing copolymerized resins with castor oil‐based polyurethane using ethylene glycol dimethacrylate (EGDM) as a crosslinker. The structures of these semi‐IPNs were studied using various characterization techniques such as IR and nuclear magnetic resonance (NMR) spectra, and the thermal behavior of the semi‐IPNs was also studied by thermogravimetric analysis (TGA). A plausible degradation mechanism was suggested in our previous communication. © 1998 John Wiley & Sons, Inc. J Appl Polm Sci 70: 837–842, 1998