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Compatibilizing effect of polystyrene‐ block ‐poly(4‐vinylpyridine) for poly(2,6‐dimethyl‐1,4‐phenylene oxide)/chlorinated polyethylene blends
Author(s) -
Xu Shengqing,
Tang Tao,
Zhao Hanying,
Huang Baotong
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19981201)199:12<2625::aid-macp2625>3.0.co;2-e
Subject(s) - compatibilization , materials science , copolymer , polymer chemistry , polystyrene , differential scanning calorimetry , phenylene , polyethylene , dynamic mechanical analysis , polymer blend , chemical engineering , oxide , composite material , polymer , physics , metallurgy , engineering , thermodynamics
The compatibilizing effect and mechanism of compatibilization of the diblock copolymer polystyrene‐ block ‐poly(4‐vinylpyridine) P(S‐ b ‐4VPy) on immiscible blends of poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO)/chlorinated polyethylene (CPE) were studied by means of scanning electron microscopy (SEM), differential scanning calorimetry (DSC), mechanical properties and FTIR measurements. The block copolymer was synthesized by sequential anionic polymerization and melt‐blended with PPO and CPE. The results show that the P(S‐ b ‐4VPy) added acts as an effective compatibilizer, located at the interface between the PPO and the CPE phase, reducing the interfacial tension, and improving the interfacial adhesion. The tensile strength and modulus of all blends increase with P(S‐ b ‐4VPy) content, whereas the elongation at break increases for PPO‐rich blends, but decreases for CPE‐rich blends. The polystyrene block of the diblock copolymer is compatible with PPO, and the poly(4‐vinylpyridine) block and CPE are partially miscible.