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H. W. Kammer, C. Kummerloewe

Polymer blends containing crystallizable block copolymers. Phase behavior and thermal properties

Polimery 1996, No 6, 334



DOI: dx.doi.org/10.14314/polimery.1996.334

Summary

We report on phase behavior and thermal properties of polymer blends comprising block copolymers with crystallizable blocks and, as a second component, homo- or random copolymers. Block copolymer constituents are &#949-caprolactone (CL) and styrene as well as 2,2-dimethyl-l,3-propylene carbonate (DPC). Both melting and crystallization behavior of the blocks is strongly influenced by addition of amorphous polymers (PPO, SAN) being miscible just with one of the blocks.Blends under discussion can undergo different phase changes as macro- and microphase separation and crystallization. Hence, morphology formation is controlled by different transitions and even a cooperative interplay of them.Phase behavior of the blends is discussed and correlated with results of morphological studies.


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