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Effect of a triblock PCL‐PDMS‐PCL copolymer on the properties of immiscible poly(vinyl chloride)/poly(2‐ethylhexyl acrylate) blends
Author(s) -
Karal Okşan,
Hamurcu E. Elif Gürel,
Baysal Bahattin M.
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<2699::aid-macp2699>3.0.co;2-d
Subject(s) - miscibility , polycaprolactone , materials science , copolymer , vinyl chloride , differential scanning calorimetry , polymer chemistry , acrylate , chemical engineering , polymer blend , ternary operation , rheology , composite material , polymer , engineering , physics , computer science , thermodynamics , programming language
Miscibility, thermal, mechanical and morphological properties of poly(vinyl chloride)/poly(2‐ethylhexyl acrylate), (PVC/PEHA) blends containing 1–10 wt.‐% of the triblock copolymer polycaprolactone‐ block ‐poly(dimethylsiloxane)‐ block ‐polycaprolactone (PCL‐PDMS‐PCL, Tegomer) were investigated by several techniques. Binary blends of PVC/PEHA are found to be immiscible according to differential scanning calorimetry and viscosity measurements. The effect of Tegomer addition on the properties of blends was examined. Ternary blends of PVC/PEHA/Tegomer exhibited a single T g behaviour and viscosity measurements indicate some compatibility. Stress‐strain results showed that Tegomer has a synergetic effect on the flexibility of the blends. FTIR analysis confirms the specific interactions between the components in ternary blends of PVC/PEHA/Tegomer. Morphological properties of the blends were examined by scanning electron microscopy.