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Weathering studies of epoxidized and hydroxy‐fluoroester pendent guayule rubber in powder coatings
Author(s) -
Gupta Sandhya,
Mendon Sharathkumar K.,
Thames Shelby F.
Publication year - 2004
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/app.20020
Subject(s) - gloss (optics) , natural rubber , materials science , weathering , composite material , chemical engineering , polymer chemistry , coating , geomorphology , geology , engineering
Although numerous coatings have been synthesized from guayule rubber derivatives, there have been no studies detailing the weatherability of such coatings. We report herein the results of accelerated weathering tests on powder coatings synthesized from epoxidized guayule rubber (EGR) and hydroxy‐fluoroester pendent guayule rubber (FGR) derivatives. Our studies indicate that EGR and FGR powder coatings exposed to alternating cycles of fluorescent UVA light and water condensation for 400 h exhibit reduced yellowing and a high degree of gloss retention. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 493–497, 2004