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Modification of rubber powder with peroxide and properties of polypropylene/rubber composites
Author(s) -
Shanmugharaj A. M.,
Kim Jin Kook,
Ryu Sung Hun
Publication year - 2007
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.25521
Subject(s) - natural rubber , materials science , polypropylene , composite material , maleic anhydride , fourier transform infrared spectroscopy , benzoyl peroxide , ultimate tensile strength , surface energy , peroxide , surface modification , grafting , monomer , chemical engineering , polymer , copolymer , chemistry , organic chemistry , engineering
Waste tire powder was functionalized in the presence of various concentrations of allylamine and benzoyl peroxide. Fourier transform infrared spectroscopy studies confirmed the presence of allylamine on the surface of the rubber powder. The surface energy of the functionalized rubber powder revealed that the introduction of allylamine onto the rubber powder surface increased the surface activity. Improvements in the tensile strength, elongation at break, and storage modulus were observed for polypropylene/modified rubber powder/maleic anhydride grafted polypropylene, and this was attributed to an improvement in the compatibility due to the chemical interaction between the rubber powder and compatibilizer. Evidence for the reaction between the rubber surface and compatibilizer was observed in Fourier transform infrared studies. This peroxide‐initiated monomer‐grafting technique is feasible for large‐scale processes. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2237–2243, 2007