Medical Applications of Polyurethane Shape Memory Polymers

2011 ◽  
pp. 307-324
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Medical Applications

Medical applications of shape memory polymers

2007 ◽  
Vol 2 (1) ◽  
pp. S23-S27 ◽  
Author(s):  
Witold Sokolowski ◽  
Annick Metcalfe ◽  
Shunichi Hayashi ◽  
L'Hocine Yahia ◽  
Jean Raymond
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Medical Applications

Biodegradable shape-memory polymers and composites

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tanner Alauzen ◽  
Shaelyn Ross ◽  
Samy Madbouly
Keyword(s):  
Shape Memory ◽  
Polymer Composites ◽  
Memory Function ◽  
Shape Memory Polymers ◽  
Medical Applications ◽  
Medical Field ◽  
Positive Perspective ◽  
Filler Phase ◽  
Polymer Industry ◽  
Phase Differences

Abstract Polymers have recently been making media headlines in various negative ways. To combat the negative view of those with no polymer experience, sustainable and biodegradable materials are constantly being researched. Shape-memory polymers, also known as SMPs, are a type of polymer material that is being extensively researched in the polymer industry. These SMPs can exhibit a change in shape because of an external stimulus. SMPs that are biodegradable or biocompatible are used extensively in medical applications. The use of biodegradable SMPs in the medical field has also led to research of the material in other applications. The following categories used to describe SMPs are discussed: net points, composition, stimulus, and shape-memory function. The addition of fillers or additives to the polymer matrix makes the SMP a polymer composite. Currently, biodegradable fillers are at the forefront of research because of the demand for sustainability. Common biodegradable fillers or fibers used in polymer composites are discussed in this chapter including Cordenka, hemp, and flax. Some other nonbiodegradable fillers commonly used in polymer composites are evaluated including clay, carbon nanotubes, bioactive glass, and Kevlar. The polymer and filler phase differences will be evaluated in this chapter. The recent advances in biodegradable shape-memory polymers and composites will provide a more positive perspective of the polymer industry and help to attain a more sustainable future.

scholarly journals Biodegradable and Antimicrobial PLA–OLA Blends Containing Chitosan-Mediated Silver Nanoparticles with Shape Memory Properties for Potential Medical Applications

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1065 ◽  
Author(s):  
Agueda Sonseca ◽  
Salim Madani ◽  
Alexandra Muñoz-Bonilla ◽  
Marta Fernández-García ◽  
Laura Peponi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Lactic Acid ◽  
Shape Memory ◽  
Shape Memory Polymers ◽  
Poly Lactic Acid ◽  
Medical Applications ◽  
Biocidal Activity ◽  
Medical Field ◽  
Human Body Temperature ◽  
Recovery Times

To use shape memory materials based on poly (lactic acid) (PLA) for medical applications is essential to tune their transition temperature (Ttrans) near to the human body temperature. In this study, the combination of lactic acid oligomer (OLA), acting as a plasticizer, together with chitosan-mediated silver nanoparticles (AgCH-NPs) to create PLA matrices is studied to obtain functional shape memory polymers for potential medical applications. PLA/OLA nanocomposites containing different amounts of AgCH-NPs were obtained and profusely characterized relating their structure with their antimicrobial and shape memory performances. Nanocomposites exhibited shape memory responses at the temperature of interest (near physiological one), as well as excellent shape memory responses, shorter recovery times and higher recovery ratios (over 100%) when compared to neat materials. Moreover, antibacterial activity tests confirmed biocidal activity; therefore, these functional polymer nanocomposites with shape memory, degradability and biocidal activity show great potential for soft actuation applications in the medical field.

Tissue Integration of Two Different Shape-Memory Polymers with Poly(ε-Caprolactone) Switching Segment in Rats

2008 ◽  
Author(s):  
Bernhard Hiebl ◽  
Dorothee Rickert ◽  
Rosemarie Fuhrmann ◽  
Friedrich Jung ◽  
Andres Lendlein ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Tissue Integration

Three-dimensional Graphene Coated Shape Memory Polyurethane Foam with Fast Responsive Performance

2021 ◽  
Author(s):  
Tianjiao Wang ◽  
Jun Zhao ◽  
Chuanxin Weng ◽  
Tong Wang ◽  
Yayun Liu ◽  
...  
Keyword(s):  
Shape Memory ◽  
Polyurethane Foam ◽  
Three Dimensional ◽  
Shape Memory Polymers ◽  
Practical Applications ◽  
External Stimuli ◽  
Shape Memory Polyurethane

Shape memory polymers (SMPs) that change shapes as designed by external stimuli have become one of the most promising materials as actuators, sensors, and deployable devices. However, their practical applications...

Macroporous Superhydrophobic Coatings with Switchable Wettability Enabled by Smart Shape Memory Polymers

2021 ◽  
pp. 2002111
Author(s):  
Calen J. Leverant ◽  
Yifan Zhang ◽  
Maria A. Cordoba ◽  
Sin‐Yen Leo ◽  
Nilesh Charpota ◽  
...  
Keyword(s):  
Shape Memory ◽  
Shape Memory Polymers ◽  
Superhydrophobic Coatings
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