Biomedical applications of thermally activated shape memory polymers

Small, Ward; Singhal, Pooja; Wilson, Thomas S.; Maitland, Duncan J.

doi:10.1039/b923717h

Cited by 414 publications

(305 citation statements)

References 133 publications

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“…SMPs are also well suitable for the use in different biomedical applications, even though several requirements must be addressed and a range of problems must be overwhelmed for advanced application in this field [33]. For example, one major issue with thermo-responsive SMP is the heating of it inside the human body.…”

Section: Biomedical Applications Of Smpumentioning

confidence: 99%

Polyurethane: A Shape Memory Polymer (SMP)

Thakur¹,

Hu²

2017

Aspects of Polyurethanes

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Shape memory polymer (SMP) is a stimuli-responsive material with the ability to alter a programmed shape to its original shape upon triggering of an appropriate stimulus. For the past decades, SMP has dragged much interest in material field owing to its various and versatile applications. One archetypal SMP is polyurethane, which has a wideranging transition temperature for its shape recovery, retraction temperatures, inherent soft-hard segments, a high recoverable strain (up to 400%), high control of the softening, favorable and tunable physical properties, and so on. This chapter emphasizes on the raw materials required for the synthesis of shape memory polyurethane (SMPU), the principle of shape memory function, the design of protocol of SMPU, and their applications with future directions.

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Section: Biomedical Applications Of Smpumentioning

confidence: 99%

Polyurethane: A Shape Memory Polymer (SMP)

Thakur¹,

Hu²

2017

Aspects of Polyurethanes

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“…On the other hand, a few new shape memory phenomena have been discovered [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], which not only enhance the flexibility of the current shape memory technology, but also add in new dimensions for extended versatility and adoptability. Consequently, a number of novel concepts have been proposed for a range of engineering applications [45,[48][49][50][51][52][53][54], in particular in the field of biomedical engineering as of the last couple of years [24,43,[55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70].…”

Section: Figurementioning

confidence: 99%

Mechanisms of the Shape Memory Effect in Polymeric Materials

et al. 2013

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Abstract:This review paper summarizes the recent research progress in the underlying mechanisms behind the shape memory effect (SME) and some newly discovered shape memory phenomena in polymeric materials. It is revealed that most polymeric materials, if not all, intrinsically have the thermo/chemo-responsive SME. It is demonstrated that a good understanding of the fundamentals behind various types of shape memory phenomena in polymeric materials is not only useful in design/synthesis of new polymeric shape memory materials (SMMs) with tailored performance, but also helpful in optimization of the existing ones, and thus remarkably widens the application field of polymeric SMMs.

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“…12 Up to now, SMPs have obtained increasing interest due to their potentially abundant applications as biomedical materials. 13,14 Besides, shape memory polyurethane (SMPU) also has a wide range of applications in the biomedical field. 15,16 For example, using the shape memory effect of polyurethane based on poly(ε-caprolactone) (PCLU), Li 15 prepared fast self-expandable stents which could be used in tissue engineering.…”

Section: ■ Introductionmentioning

confidence: 99%

Design of Triple-Shape Memory Polyurethane with Photo-cross-linking of Cinnamon Groups

Wang

Yang

Chen

et al. 2013

ACS Appl. Mater. Interfaces

105

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A triple-shape memory polyurethane (TSMPU) with poly(ε-caprolactone) -diols (PCL-diols) as the soft segments and diphenyl methane diisocyanate (MDI), N,N-bis (2-hydroxyethyl) cinnamamide (BHECA) as the hard segments was synthesized via simple photo-crosslinking of cinnamon groups irradiated under λ > 280 nm ultraviolet (UV) light. Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance ( 1 H-NMR) and ultraviolet-visible absorption spectrum (UV−vis) confirmed the chemical structure of the material. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) results demonstrated that the photocrosslinked polymer possessed two transition temperatures, one is due to the melting point of the soft segment PCL-diols, and the other is due to the glass transition temperature. All these contributed to the cross-linked structure of the hard segments and resulted in an excellent triple-shape memory effect. Alamar blue assay showed that the material has good non-cytotoxicity and can be potentially used in biomaterial devices.

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Biomedical applications of thermally activated shape memory polymers

Cited by 414 publications

References 133 publications

Polyurethane: A Shape Memory Polymer (SMP)

Polyurethane: A Shape Memory Polymer (SMP)

Mechanisms of the Shape Memory Effect in Polymeric Materials

Design of Triple-Shape Memory Polyurethane with Photo-cross-linking of Cinnamon Groups

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