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Property‐morphology relationships of polymethylmethacrylate/polyvinylidenefluoride blends
Author(s) -
Mijović Jovan,
Luo HongLie,
Han Chang Dae
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.760220404
Subject(s) - materials science , differential scanning calorimetry , scanning electron microscope , composite material , morphology (biology) , plastics extrusion , annealing (glass) , polymer blend , molding (decorative) , polymer , copolymer , physics , biology , genetics , thermodynamics
An investigation was conducted to establish property‐morphology relationships in polymethylmethacrylate/polyvinylidenefluoride (PMMA/PVDF) blends. All blends were compounded in a twin‐screw extruder and then processed by injection molding Mechanical properties of blends of various compositions were studied by dynamic mechanical and impact strength measurements. The presence of crystalline regions in blends was determined by Differential Scanning Calorimetry (DSC). Morphology of fracture surfaces of blends was studied by Spinning Electron Microscopy (SEM). PMMA/PVDF blends were found to form compatible mixtures over a wide range of blend composition. Changes in dynamic mechanical properties upon annealing were found to be a direct function of blond morphology. Electron microscopic evidence showed no signs of phase separation. DSC measurements detected crystalline regions in all blends containing 40 percent or more (by weight) PVDF.