NIMTE OpenIR  > 2018专题
Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas
Gu, Lin; Jiang, Yuanzhang; Hu, Jinlian
2018
Source PublicationPOLYMERS
Volume10Issue:6
AbstractIn this work, a new class of highly stretchable peptide-polyurethane/ureas (PUUs) were synthesized containing short -sheet forming peptide blocks of poly(-benzyl-l-glutamate)-b-poly(propylene glycol)-b-poly(-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 -benzyl-l-glutamate-N-carboxyanhydrides (BLG-NCA), which shows mixed -helix and -sheet conformation, where the percent of -sheet structure was above 48%. Morphological studies indicate that the obtained PUUs show -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.
KeywordMechanical-properties Secondary Structure Chemical-synthesis Amino-acids Beta-sheets Spider Silk Copolymers Biopolymers Toughness Hydrogels
Subject AreaChemistry ; Engineering ; Materials Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/17431
Collection2018专题
Recommended Citation
GB/T 7714
Gu, Lin,Jiang, Yuanzhang,Hu, Jinlian. Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas[J]. POLYMERS,2018,10(6).
APA Gu, Lin,Jiang, Yuanzhang,&Hu, Jinlian.(2018).Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas.POLYMERS,10(6).
MLA Gu, Lin,et al."Facile Preparation of Highly Stretchable and Recovery Peptide-Polyurethane/Ureas".POLYMERS 10.6(2018).
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