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Shape memory polyurethanes based on recycled polyvinyl butyral. I. Synthesis and morphology

  • Research Article
  • Published:
Central European Journal of Chemistry

Abstract

Shape memory polyurethanes (SMPUs) were synthesized by 4,4′-diphenylmethane diisocyanate (MDI), hexane-1,6-diol (HD), polypropylene glycol (PPG), and recycled polyvinyl butyral (PVB). Dynamic mechanical analysis, differential scanning calorimetry and Fourier transformation infrared attenuated total reflection spectroscopy was used to characterize the poly (vinylbutyral-urethanes). Micro-phase domain separation of hard and soft segments and phase inversion were investigated. Increasing the hard segment content, i.e., average hard segment molecular weight, leads to an increase in the degree of micro-phase separation, hard domain order and crystallinity. The crystalline hard segment structures combined with the elastic nature of soft segment matrix provide enough physical and chemical crosslinks to have shape memory effect.

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Authors and Affiliations

  1. University of Applied Sciences Wildau, 15745, Wildau, Germany

    Tsvetomir Tsonev & Michael Herzog

  2. University of Chemical Technology and Metallurgy Sofia, 1756, Sofia, Bulgaria

    Sanchi Nenkova

Authors
  1. Tsvetomir Tsonev
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  2. Michael Herzog
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  3. Sanchi Nenkova
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Correspondence to Tsvetomir Tsonev.

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Tsonev, T., Herzog, M. & Nenkova, S. Shape memory polyurethanes based on recycled polyvinyl butyral. I. Synthesis and morphology. cent.eur.j.chem. 11, 2058–2065 (2013). https://doi.org/10.2478/s11532-013-0331-3

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  • DOI: https://doi.org/10.2478/s11532-013-0331-3

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