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Toughening of unsaturated polyester with rubber particles. Part I: Morphological study
Author(s) -
Maspoch M. L. L.,
Martinez A. B.
Publication year - 1998
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10189
Subject(s) - materials science , natural rubber , composite material , volume fraction , scanning electron microscope , polyester , microstructure , transmission electron microscopy , elastomer , particle size , particle (ecology) , phase (matter) , morphology (biology) , chemical engineering , organic chemistry , nanotechnology , oceanography , chemistry , geology , biology , engineering , genetics
The morphology of rubber‐modified unsaturated polyester is described. In order to modify the particle‐matrix interface, different rubbers were used; BFGoodrich Hycar liquid rubbers and high molecular weight rubbers. Blends of different compositions were prepared. The microstructure of the materials was investigated using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The volume fraction and the particle size of the rubbers' second phase was determined by applying quantitative metallography. The volume fraction of the precipitated phase was higher than the amount of added rubber. Such blends show phase inversion above 35 wt% of rubber.