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Maleated polyisobutylene: A novel toughener for unsaturated polyester resins
Author(s) -
Abbate M.,
Martuscelli E.,
Musto P.,
Ragosta G.,
Scarinzi G.
Publication year - 1995
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.1995.070581021
Subject(s) - materials science , natural rubber , succinic anhydride , curing (chemistry) , fourier transform infrared spectroscopy , polyester , composite material , scanning electron microscope , grafting , unsaturated polyester , yield (engineering) , polymer , polymer chemistry , chemical engineering , engineering
Abstract A polyisobutene rubber was modified by grafting succinic anhydride onto its end groups and has been used as a toughening agent for an unsaturated polyester resin. Both the functionalization and the successive reaction between the modified rubber and the polyester was investigated by Fourier transform infrared spectroscopy (FTIR). The yield behavior of the cured resins was studied by compression measurements, while the fracture properties were determined at low and high strain rate. A morphological analysis of the investigated blends has been carried out by scanning electron microscopy (SEM). A considerable enhancement of tougheness has been achieved when the modified rubber was used in place of the plain polyisobutene. The effect was found to depend on the grafting degree of the rubber and on the time period during which the two‐component mixture was allowed to react prior to the curing process. © 1995 John Wiley & Sons, Inc.