Shape‐Memory Biopolymers Based on β‐Sheet Structures of Polyalanine Segments Inspired by Spider Silks

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)161-166
Journal / PublicationMacromolecular Bioscience
Volume13
Issue number2
Online published4 Dec 2012
Publication statusPublished - Feb 2013
Externally publishedYes

Abstract

The molecular structural design learned from natural materials enables synthetic polymers with desirable and unique features to be fabricated. Inspired by spider silks, short-chain polyalanine (PA) is introduced into multiblock biopolymers with poly(ε-caprolactone) segments via a coupling reaction. As a result, PA segments in biopolymers form similar β-sheet crystals to that of natural spidroins. These new biopolymers are found to exhibit nearly complete shape recovery and high shape fixity, along with significantly improved thermal stability due to the strong β-sheet structures as netpoints. This work provides new insight for the design of novel shape-memory polymers with potential use in biomedical applications. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Research Area(s)

  • β-sheet structures, Biopolymers, Shape-memory function, Spider silks, Thermal properties