S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
Dynamic Viscoelastic Behavior of Model Poly(vinyl chloride) Blends Characterized at Small Deformation in Shear Oscillation
- Kwak, Seung-Yeop
- Issue Date
- The Society of Polymer Science, Japan
- Polym. J., 26, 491
- Poly(vinyl Chloride) (PVC); Nitrile Rubber (NBR); Poly-(epsilon-caprolactone) (PCL); Copolyester Thermoplastic Elastomer (HYTREL); Mechanical Blending; Viscoelastic Behavior; Shear Storage Modulus; Shear Loss Modulus
- In the present study, dynamic shear oscillation measurements at small strain were conducted on four model blends of equal amounts (50/50 by weight) of poly(vinyl chloride) (PVC) with three compatible and one incompatible polymers. The compatible polymers were nitrile rubber containing 30% acrylonitrile (NBR-30), poly(ε-caprolactone) (PCL), and copolyester thermoplastic elastomer (trademark HYTREL). The incompatible one was nitrile rubber containing 22% acrylonitrile (NBR-22). Double logarithmic plots of loss modulus G″(ω) against storage modulus G′(ω) were employed as a systematic, practical way of treating the data. The modulus logG″(ω)–logG′(ω) scheme was shown to enable one to characterize and interpret the viscoelastic behavior of the blends related to the mixing history and morphological changes.
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