Next Article in Journal
Observation and Simulation of Axle Box Acceleration in the Presence of Rail Weld in High-Speed Railway
Next Article in Special Issue
Shape Memory-Enhanced Electrical Self-Healing of Stretchable Electrodes
Previous Article in Journal
Elution of Artificial Sputum from Swab by Rotating Magnetic Field-Induced Mechanical Impingement
Previous Article in Special Issue
Magnetic-Responsive Microparticles that Switch Shape at 37 °C
Article Menu
Issue 12 (December) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(12), 1258; https://doi.org/10.3390/app7121258

Synthesis and Properties of Shape Memory Poly(γ-Benzyl-l-Glutamate)-b-Poly(Propylene Glycol)-b-Poly(γ-Benzyl-l-Glutamate)

1,2,†
,
1,†
and
1,*
1
Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Hong Kong 999077, China
2
Key Laboratory of Marine Materials and Related Technologies, Key Laboratory of Marine Materials and Protective Technologies of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 31 October 2017 / Revised: 18 November 2017 / Accepted: 30 November 2017 / Published: 4 December 2017
(This article belongs to the Special Issue Shape Memory Polymers)
Full-Text   |   PDF [2832 KB, uploaded 4 December 2017]   |  

Abstract

Shape memory polymers (SMPs) have attracted much attention as an important class of stimuli-responsive materials for biomedical applications. For SMP-based biomaterials, in addition to suitable shape recovery performances, their mechanical properties, biodegradability, biocompatibility, and sterilizability needs to be considered. Polypeptides can satisfy the requirements outlined above. However, there are few reports on shape memory polypeptides. In this paper, shape memory poly(γ-benzyl-l-glutamate) (PBLG-PPG-PBLG) was synthesized by ring-opening polymerization of γ-benzyl-l-glutamate-N-carboxyanhydrides (BLG-NCA) with poly(propylene glycol) bis(2-aminopropyl ether) as the macroinitiator. 1H Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared Spectroscopy (FTIR) were used to characterize the structure of the obtained PBLG-PPG-PBLG. The FTIR analysis showed that PBLG-PPG-PBLG has α-helical and β-sheet structures. PBLG-PPG-PBLG has good shape memory properties, its shape recovery time is less than 120 s, and its shape recovery rate is 100%. In this study, we reported a simple synthetic method to obtain intelligent polypeptide materials, which will be used in many biomedical applications. View Full-Text
Keywords: ring-opening polymerization; shape memory; poly(γ-benzyl-l-glutamate); biomedical application ring-opening polymerization; shape memory; poly(γ-benzyl-l-glutamate); biomedical application
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Gu, L.; Jiang, Y.; Hu, J. Synthesis and Properties of Shape Memory Poly(γ-Benzyl-l-Glutamate)-b-Poly(Propylene Glycol)-b-Poly(γ-Benzyl-l-Glutamate). Appl. Sci. 2017, 7, 1258.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top