Melting point depression in poly(?-caprolactone) / poly(styrene-co-acrylonitrile) blends |
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Authors: | J Kressler H W Kammer |
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Affiliation: | (1) Department of Chemistry, University of Technology, Mommsenstrasse 13, DDR-8027 Dresden, German Democratic Republic |
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Abstract: | Summary The melting point depression of poly( -caprolactone)/poly(styrene-co-acrylonitrile) (PCL/SAN) blends with changes in acrylonitrile content of SAN and in blend ratio was investigated by differential scanning calorimetry. For the melting points at a constant blend ratio occur a minimum in dependence on the copolymer composition for blends containing about 20 wt% acrylonitrile in SAN. From melting point depression data a negative, binary interaction parameter was obtained for PCL/SAN blends containing a SAN with 19.2 wt% AN. By optical microscopy it can be shown that the shape of the spherulites changes with copolymer composition of SAN and blend ratio. |
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