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

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

檜垣 勇次, 鈴木 研, 小椎尾 謙, 高原 淳

Research output: Contribution to journalArticle

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.
Translated title of the contributionMolecular Aggregation Structure of a Segmented Poly(urethane-urea) Elastomer Derived from an Amino Acid-Based Diisocyanate
Original languageJapanese
Pages (from-to)31-36
Number of pages6
JournalKobunshi Ronbunshu
Volume72
Issue number1
DOIs
Publication statusPublished - 2015
Externally publishedYes

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