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The study of polystyrene blends: The relationship of phases and structure in blends of polystyrene with ethylene–propylene diene monomer rubber and its grafted copolymer
Author(s) -
Sheng Jing,
Hu Jing,
Yuan XuBo,
Han YunPing,
Li FengKui,
Bian DongCai
Publication year - 1998
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/(sici)1097-4628(19981024)70:4<805::aid-app21>3.0.co;2-u
Subject(s) - materials science , small angle x ray scattering , polystyrene , copolymer , radius of gyration , natural rubber , composite material , polymer chemistry , monomer , polymer blend , ethylene propylene rubber , scanning electron microscope , styrene , scattering , polymer , physics , optics
Pressed films of blends of polystyrene (PS) with ethylene–propylene diene monomer rubber (EPDM) or grafted copolymer of styrene (St) onto EPDM (EPDM‐ g ‐St) rubber were examined by small‐angle X‐ray scattering (SAXS), and scanning electron microscope (SEM). Small‐angle X‐ray scattering from the relation of phase was analyzed using Porod's Law and led to value of interface layer on blends. The thickness of interface layer (σ b ) had a maximum value at 50/50 (PS–EPDM‐ g ‐St) on blends. The radius of gyration of dispersed phase (domain) and correlation distances a c in blends of PS–EPDM‐ g ‐St were calculated using the data of SAXS. The morphology and structure of blends were investigated by SEM. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 805–810, 1998