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Alkylated phenolic resins as antioxidants for rubber
Author(s) -
Malshe V. C.,
Elango S.,
Rane Shilpa
Publication year - 2006
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.22736
Subject(s) - phenol , natural rubber , phenols , formaldehyde , antioxidant , phenol formaldehyde resin , materials science , condensation polymer , chemistry , organic chemistry , catalysis , polymer chemistry , chemical engineering , composite material , engineering
Abstract Polymeric antioxidants based on p ‐nonyl phenol formaldehyde resin (PNPF) and p ‐dodecyl phenol formaldehyde resin (PDPF) were prepared by the condensation reaction of the respective phenols with formaldehyde in the presence of an acid catalyst. The reactions were monitored by thin layer chromatography, and the melting points of the products were determined. These compounds were incorporated in natural rubber mixes to evaluate their antioxidant properties. The compounded mixes were characterized for their rheometric properties. The compression‐molded rubber sheets were tested for their mechanical properties. The effects of aging on the mechanical properties of these molded sheets were evaluated. Both PNPF and PDPF showed better antioxidant properties than the conventional styreneated phenol antioxidant. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2649–2651, 2006