Spatial and temporal control of shape memory polymers and simultaneous drug release using high intensity focused ultrasound

Guo, Li; Fei, Guoxia; Xia, Hesheng; Han, Jianjun; Zhao, Yue

doi:10.1039/c2jm30848g

Cited by 133 publications

(106 citation statements)

References 38 publications

(41 reference statements)

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“…High intensity focused ultrasound (HIFU) was applied to remotely and locally heat SMPs [95]. HIFU, that can be concentrated onto a focal spot, was originally developed to treat tumors due to its thermal effect.…”

Section: Phase Versus Molecular Switches and Thermal Versus Non-thermmentioning

confidence: 99%

Recent progress in shape memory polymer: New behavior, enabling materials, and mechanistic understanding

Zhao

Xie

2015

Progress in Polymer Science

1,115

742

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Shape memory polymers (SMPs), as a class of programmable stimuliresponsive shape changing polymers, are attracting increasing attention from the standpoint of both fundamental research and technological innovations. Following a brief introduction of the conventional shape memory effect (SME), progress in new shape memory enabling mechanisms and triggering methods, variations of in shape memory forms (shape memory surfaces, hydrogels, and microparticles), new shape memory behavior (multi-SME and two-way-SME), and novel fabrication methods are reviewed. Progress in thermomechanical modeling of SMPs is also presented. Abbreviations:SCPs shape changing polymers; LCEs liquid crystalline elastomers; SMP shape memory polymer; SME shape memory effect; 2W two-way; 1W oneway; T trans transition temperature; T g glass transition temperature; T m melting temperature; T cl liquid crystal cleaning temperature; T d deformation temperature; T f shape fixing temperature; T c crystallization temperature; R f shape stability ratio; R r shape recovery ratio; T sw switching temperature; ε max maximum recoverable strain; σ max maximum recovery stress; SMC shape memory cycle; ε load strain under load; ε fixed strain; T r recovery Page 2 of 106 A c c e p t e d M a n u s c r i p t 2 temperature; ε rec recovered strain; V r strain recovery rate; T σmax temperature corresponding to σ max ; T sw,app apparent switching temperature; PCL poly(ε-caprolactone); SMPU shape memory polyurethane; EMU elemental memory unit; TME temperature memory effect; PU polyurethane; T i liquid-crystal isotropic transition temperature; T v vitrification temperature; CIE crystallization induced elongation; MIC melting induced contraction

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Section: Phase Versus Molecular Switches and Thermal Versus Non-thermmentioning

confidence: 99%

Recent progress in shape memory polymer: New behavior, enabling materials, and mechanistic understanding

Zhao

Xie

2015

Progress in Polymer Science

1,115

742

View full text Add to dashboard Cite

show abstract

“…Potential applications have also opened for biomedical devices using biocompatible polymers, such as PU and space materials with enhanced mechanical performance [9][10][11]. Among the many SMPs, shape memory polyurethane (SMPU) has found the broadest applications because of their ample degree of freedom in property design.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and shape memory performance of polyurethane/graphene nanocomposites

Kim

et al. 2014

Reactive and Functional Polymers

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“…Aside from the current applications in textile, films, smart toys, etc., vast applications have opened for biomedical devices using biocompatible polymers such as PU and space materials with enhanced mechanical performance [9][10][11]. Among the many SMPs, shape memory polyurethanes (SMPUs) have found the broadest applications because of their ample degree of freedom in property design.…”

Section: Introductionmentioning

confidence: 99%