Premium
Grafting of maleic anhydride onto polypropylene by reactive processing. I. Effect of maleic anhydride and peroxide concentrations on the reaction
Author(s) -
Bettini S. H. P.,
Agnelli J. A. M.
Publication year - 1999
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(19991010)74:2<247::aid-app2>3.0.co;2-a
Subject(s) - maleic anhydride , grafting , polypropylene , peroxide , melt flow index , polymer chemistry , fourier transform infrared spectroscopy , materials science , chemical engineering , chemistry , copolymer , composite material , organic chemistry , polymer , engineering
Grafting reactions were performed in a Haake torque rheometer, according to a central composite experimental design, where the maleic anhydride and peroxide concentrations, rotor speed, and reaction time were varied. The 27 formulations were analyzed by Fourier transformed infrared spectroscopy and melt‐flow index measurements (MFI). An increase in peroxide concentration caused an increase in the percentage of reacted maleic anhydride and in MFI. The effect of initial maleic anhydride concentration presented different types of behavior, depending on the peroxide level. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 247–255, 1999