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

✍ Scribed by Jing Sheng; Jing Hu; Xu-Bo Yuan; Yun-Ping Han; Feng-Kui Li; Dong-Cai Bian

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 277 KB
• Volume: 70
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19981024)70:4<805::aid-app21>3.0.co;2-u

✦ Synopsis

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 ( 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.