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Structure‐property relationships in polyurethane‐poly(styrene‐co‐acrylonitrile) blends

机译：Structure‐property relationships in polyurethane‐poly(styrene‐co‐acrylonitrile) blends

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AbstractBlends of Thermoplastic polyurethane (TPU) and poly(styrene‐co‐acrylonitrile) (SAN) (34 acrylonitrile and 24 acrylonitrile) and polyurethane ionomer (PUI) with SAN (34 acrylonitrile) were prepared in the melt. The structural properties and morphology of the blends were investigated. TPU and SAN blends were immiscible in the composition range 30–70 wt of TPU or SAN. In TPU‐rich blends, SAN propagates the separation of hard and soft segements in TPU. In SAN‐rich blends, the interaction stage depends on acrylonitrile contents. SEM measurements showed that the blends of TPU/SAN were fine dispersions and clearly showed a continuous and disperse phase, whereas the morphology of the PUI/SAN blends were different. © 1993 John Wiley

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