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Evaluation of the interaction parameter for poly(ε-caprolactone)/poly(styrene-co-acrylonitrile) blends

✍ Scribed by Elisabetta Princi; Silvia Vicini

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
231 KB
Volume
48
Category
Article
ISSN
0887-6266

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✦ Synopsis

Abstract

In this article, the miscibility of poly(ε‐caprolactone) (PCL) with poly(styrene‐co‐acrylonitrile) (SAN) containing 25 wt % of acrylonitrile is studied from both a qualitative and a quantitative point of view. The evidences coming from thermal analysis (differential scanning calorimetry) demonstrate that PCL and SAN are miscible in the whole range of composition. The Flory interaction parameter χ~1,2~ was calculated by the Patterson approximation and the melting point depression of the crystalline phase in the blends; in both cases, negative values of χ~1,2~ were found, confirming that the system is miscible. The interaction parameter evaluated within the framework of the mean field theory demonstrates that the miscibility of PCL/SAN blends is due to the repulsive interaction between the styrene and acrylonitrile segments in SAN. © 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys, 2010

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Rheological behavior of compatible polym
Rheological behavior of compatible polymer blends. I. Blends of poly(styrene-Co-acrylonitrile) and poly(ε-caprolactone)
✍ Chang Dae Han; Heng-Huey Yang 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 980 KB

The rheological behavior of blends of poly(styrene-co-acrylonitrile) (SAN) and poly( c-caprolactone) (PCL) was investigated, using a cone-and-plate rheometer. For the study, blends of various compositions were prepared by melt blending using a twin-screw compounding machine. The rheological properti