A mini review: Shape memory polymers for biomedical applications

doi:10.1007/s11705-017-1632-4

Front. Chem. Sci. Eng.

2017, Vol. 11

Issue (2) : 143-153 https://doi.org/10.1007/s11705-017-1632-4

REVIEW ARTICLE

A mini review: Shape memory polymers for biomedical applications

Kaojin Wang, Satu Strandman, X. X. Zhu(

)

Département de Chimie, Université de Montréal, C. P. 6128, Succ. Centre-ville, Montréal, QC, H3C 3J7, Canada

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Abstract

Shape memory polymers (SMPs) are smart materials that can change their shape in a pre-defined manner under a stimulus. The shape memory functionality has gained considerable interest for biomedical applications, which require materials that are biocompatible and sometimes biodegradable. There is a need for SMPs that are prepared from renewable sources to be used as substitutes for conventional SMPs. In this paper, advances in SMPs based on synthetic monomers and bio-compounds are discussed. Materials designed for biomedical applications are highlighted.

Keywords shape memory polymer biodegradability biocompatibility biomedical application bile acids

Corresponding Author(s): X. X. Zhu

Just Accepted Date: 21 February 2017 Online First Date: 17 April 2017 Issue Date: 12 May 2017

Cite this article:

Kaojin Wang,Satu Strandman,X. X. Zhu. A mini review: Shape memory polymers for biomedical applications[J]. Front. Chem. Sci. Eng., 2017, 11(2): 143-153.

URL:

https://academic.hep.com.cn/fcse/EN/10.1007/s11705-017-1632-4
https://academic.hep.com.cn/fcse/EN/Y2017/V11/I2/143

Fig.1 Basic definitions of SMEs. Top: (a) dual and (b) triple one-way SMEs. Bottom: (c) two-way reversible SMEs

Fig.2 Shape memory-recovery behavior of polyESO/PLLA. Reproduced with permission from Ref. []. Copyright (2014) American Chemical Society

Fig.3 Photographs exhibiting the self-expansion of the stent made from PCL and P(3HB-co-3HV). Reproduced with permission from Ref. []. Copyright (2010) Elsevier Science Ltd.

Fig.4 Triple SME of a strip sample of PCL/PTMEG polymer network. Reproduced with permission from Ref. []. Copyright (2015) American Chemical Society

Fig.5 Two-way reversible SME of cross-linked PEG-PCL block copolymer network. Reproduced with permission from Ref. []. Copyright (2014) The Royal Society of Chemistry

Fig.6 (a) Structure of?bile acid-based copolyester; (b) relative mass loss; and (c) M_n decrease upon degradation; SEM images (d) before and (e) after 5-month degradation of polymer film in PBS at 37 °C. Adapted with permission from Ref. []. Copyright (2008) The Royal Society of Chemistry

Fig.7 (a) Structure of selected bile acid-based polymers and (b) an example of shape recovery behavior. Adapted with permission from Ref. []. Copyright (2009) American Chemical Society

Fig.8 Synthesis of photo-cross-linked cinnamic acid-based terpolymer and its triple shape memory behavior. Reproduced with permission from Ref. []. Copyright (2015) American Chemical Society

Fig.9 The recovery process of triple SMP for removable stent, shapes (b) and (c) were recovered by heating to 40 and 60 °C, respectively, beginning from shape (a). Reprinted with permission from Ref. []. Copyright (2006) National Academy of Sciences, USA

Fig.10 Proposed artificial tendon of two-way reversible SMPs. Reproduced with permission from Ref. []. Copyright (2014) The Royal Society of Chemistry

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