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1 Dental Research Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27514, USA
Fracture surfaces of two-phase acrylic polymers were examined by reflected light microscopy. In two materials, detailed features were observed which resembled ones previously reported for poly (methyl methacrylate). In addition, a granular microstructure was noted. A material that fractured intergranularly had a lower tensile strength than one tiat fractured transgranularly.
Submitted on September 7, 1973
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