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Surface studies of polystyrene–poly(methyl methacrylate) diblock copolymers precipitated by different precipitants
Author(s) -
Sohn Jeongin,
Ree Taikyue
Publication year - 1984
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.1984.070291252
Subject(s) - copolymer , polystyrene , differential scanning calorimetry , materials science , scanning electron microscope , polymer chemistry , micelle , precipitation , chemical engineering , morphology (biology) , methyl methacrylate , polymer , chemistry , organic chemistry , composite material , aqueous solution , physics , genetics , biology , meteorology , engineering , thermodynamics
Diblock copolymers of polystyrene (PS) and poly(methyl methacrylate) (PMMA) with varying compositions in the mole fractions of PS were prepared, and were obtained in particle state by different methods of precipitation. The morphology of the precipitates was studied by electron spectroscopy for chemical analysis (ESCA), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and viscometry. From these studies it was found that the precipitates of diblock copolymers have core‐micelle structures, the components of the core and the surrounding micelle being different by precipitation histories.