Molecular Aggregation Structure of a Segmented Poly(urethane-urea) Elastomer Derived from an Amino Acid-Based Diisocyanate

DOI Web Site 18 References
  • HIGAKI Yuji
    Institute for Materials Chemistry and Engineering, Kyushu University Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University
  • SUZUKI Ken
    Graduate School of Engineering, Kyushu University
  • KOJIO Ken
    Institute for Materials Chemistry and Engineering, Kyushu University Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University
  • TAKAHARA Atsushi
    Institute for Materials Chemistry and Engineering, Kyushu University Graduate School of Engineering, Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University

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Other Title
  • アミノ酸由来ジイソシアネートを用いたセグメント化ポリウレタンウレアエラストマーの分子鎖凝集構造解析
  • アミノサン ユライ ジイソシアネート オ モチイタ セグメントカ ポリウレタンウレアエラストマー ノ ブンシサ ギョウシュウ コウゾウ カイセキ

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Abstract

We prepared segmented poly(urethane-urea)s (SPUUs) from a lysine-based diisocyanate (LDI) and an aliphatic polyester poly(ε-caprolactone) diol (PCL-diol), and 1,4-butanediamine (BDA). We also investigated the molecular aggregation structure, mechanical performance and biodegradability. Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), Fourier transform infrared spectroscopy (FT-IR), wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS) measurements indicated that the LDI-based hard segment (HS) shows weak segregation because of the bulky asymmetric chemical structure of the LDI. The stress-strain curve of PCL(1250)-LDI-BDA exhibits a yielding point and less mechanical strength than PCL(1250)-BDI-BDA because of the plastic deformation of the HS domains. PCL(1250)-LDI-BDA shows adequate biodegradability due to weak aggregation capacity of LDI-based components.

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 72 (1), 31-36, 2015

    The Society of Polymer Science, Japan

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