Relaxation phenomena and morphology of polyurethane block copolymers
- 1 April 1990
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science, Part B
- Vol. 29 (1) , 31-48
- https://doi.org/10.1080/00222349008212334
Abstract
Five types of linear segmented polyurethanes based on a low molecular weight polyester, reacted with 4,4′-diphenylmethane diisocyanate (MDI), and extended with 1,4-butanediol (BDO), have been studied by dynamic mechanical analysis (DMA), thermally stimulated depolarization current method (TSDC), and differential scanning calorimetry (DSC). Different types of transitions and relaxations have been detected and related to the structure and morphology of the block copolymers studied.Keywords
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