Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas
AbstractIn this work, a new class of highly stretchable peptide-polyurethane/ureas (PUUs) were synthesized containing short β-sheet forming peptide blocks of poly(γ-benzyl-l-glutamate)-b-poly(propylene glycol)-b-poly(γ-benzyl-l-glutamate) (PBLG-b-PPG-b-PBLG), isophorone diisocyanate as the hard segment, and polytetramethylene ether glycol as the soft phase. PBLG-b-PPG-b-PBLG with short peptide segment length (<10 residues) was synthesized by amine-initiated ring opening polymerization of γ-benzyl-l-glutamate-N-carboxyanhydrides (BLG-NCA), which shows mixed α-helix and β-sheet conformation, where the percent of β-sheet structure was above 48%. Morphological studies indicate that the obtained PUUs show β-sheet crystal and nanofibrous structure. Mechanical tests reveal the PUUs display medium tensile strength (0.25–4.6 MPa), high stretchability (>1600%), human-tissue-compatible Young’s modulus (226–513 KPa). Furthermore, the shape recovery ratio could reach above 85% during successive cycles at high strain (500%). In this study, we report a facile synthetic method to obtain highly stretchable and recovery peptide-polyurethane/urea materials, which will have various potential applications such as wearable and implantable electronics, and biomedical devices. View Full-Text
Share & Cite This Article
Gu, L.; Jiang, Y.; Hu, J. Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas. Polymers 2018, 10, 637.
Gu L, Jiang Y, Hu J. Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas. Polymers. 2018; 10(6):637.Chicago/Turabian Style
Gu, Lin; Jiang, Yuanzhang; Hu, Jinlian. 2018. "Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas." Polymers 10, no. 6: 637.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.