Molecular aggregation structure of a segmented poly(urethane-urea) elastomer derived from an amino acid-based diisocyanate

Yuji Hioaki, Ken Suzuki, Ken Kojio, Atsushi Takahara

研究成果: ジャーナルへの寄稿学術誌査読

抄録

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.

本文言語英語
ページ(範囲)31-36
ページ数6
ジャーナルKOBUNSHI RONBUNSHU
72
1
DOI
出版ステータス出版済み - 1月 1 2015

!!!All Science Journal Classification (ASJC) codes

  • 化学工学(その他)
  • 材料科学(その他)
  • 環境科学(全般)
  • ポリマーおよびプラスチック

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