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Fractography of polyethylene glycol dimethacrylate doped with polymethyl methacrylate
Author(s) -
Atsuta M.,
Turner D. T.
Publication year - 1982
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.760221805
Subject(s) - materials science , polymethyl methacrylate , composite material , ethylene glycol dimethacrylate , scanning electron microscope , microstructure , fractography , polyethylene glycol , brittleness , dopant , polymer , methyl methacrylate , polymerization , polyethylene , chemical engineering , doping , methacrylic acid , optoelectronics , engineering
The presence of polymethyl methacrylate (PMMA) can greatly affect the properties of materials made by polymerization of ethylene glycol dimethacrylate (EGDM). Fracture surfaces, examined by scanning electron microscopy, show a much wider range of morphologies in mist regions than observed in previous work on PEGDM alone. These morphologies are attributed to the moderation of brittle fracture by localized plastic deformation. It is suggested that the effect of PMMA is due to its segregation around clusters of highly cross‐linked particles of PEGDM that, as a result, become more discrete and, hence, more susceptible to interparticle displacements during fracture. In agreement With this suggestion, the mist regions usually exhibit a particulate microstructure.