Results 241 to 250 of about 73,606 (289)

Light-induced shape-memory polymers

Nature, 2005
Materials are said to show a shape-memory effect if they can be deformed and fixed into a temporary shape, and recover their original, permanent shape only on exposure to an external stimulus. Shape-memory polymers have received increasing attention because of their scientific and technological significance.
Andreas, Lendlein, Hongyan, Jiang, Oliver, Jünger, Robert, Langer   +3 more
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Enzymatically triggered shape memory polymers

Acta Biomaterialia, 2019
Cytocompatible shape memory polymers activated by thermal or photothermal triggers have been developed and established as powerful "smart material" platforms for both basic and translational research. Shape memory polymers (SMPs) that could be triggered directly by biological activity have not, in contrast, been reported.
Shelby L. Buffington, Justine E. Paul, Matthew M. Ali, Mark M. Macios, Patrick T. Mather, James H. Henderson   +5 more
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pH‐Induced Shape‐Memory Polymers

Macromolecular Rapid Communications, 2012
AbstractA novel pH sensitive shape‐memory polymer (SMP) is prepared by cross‐linking the β‐cyclodextrin modified alginate (β‐CD‐Alg) and diethylenetriamine modified alginate (DETA‐Alg): The pH reversible β‐CD‐DETA inclusion complexes serve as a reversible phase, and the cross‐linked alginate chains serve as a fixing phase.
Xiao-Juan, Han, Zhen-Qiang, Dong, Min-Min, Fan, Yan, Liu, Jian-Hu, li, Yi-Fu, Wang, Qi-Juan, Yuan, Bang-Jing, Li, Sheng, Zhang   +8 more
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Magnetic Shape Memory - Polymer Hybrids

Materials Science Forum, 2016
Martensitic Ni-Mn-Ga based alloys are known for the Magnetic Shape Memory (MSM) effect, which upon application of an external magnetic field can generate a strain up to 12 % depending on the microstructure of the martensite. The MSM effect occurs by rearrangement of the martensite variants, which is most advantageous in single crystals. Single crystals
Nilsén, Frans, Lehtonen, Joonas, Ge, Yanling, Spoljaric, Steven, Seppälä, Jukka, Hannula, Simo Pekka, Aaltio, Ilkka   +7 more
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Reversible Bidirectional Shape‐Memory Polymers

Advanced Materials, 2013
Free-standing copolymer network samples with two types of crystallizable domains are capable of a fully reversible bidirectional shape-memory effect. One set of crystallizable domains determines the shape-shifting geometry while the other provides the thermally controlled actuation capability.
Marc, Behl, Karl, Kratz, Jörg, Zotzmann, Ulrich, Nöchel, Andreas, Lendlein   +4 more
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Medical applications of shape memory polymers

Biomedical Materials, 2007
Shape memory polymers (SMP) are lightweight, have a high strain/shape recovery ability, are easy to process, and required properties can be tailored for variety of applications. Recently a number of medical applications have been considered and investigated, especially for polyurethane-based SMP.
Witold, Sokolowski, Annick, Metcalfe, Shunichi, Hayashi, L'Hocine, Yahia, Jean, Raymond   +4 more
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Shape‐Memory Polymers: Multifunctional Shape‐Memory Polymers (Adv. Mater. 31/2010)

Advanced Materials, 2010
AbstractThe thermally‐induced shape‐memory effect (SME) is the capability of a material to change its shape in a predefined way in response to heat. In shape‐memory polymers (SMP) this shape change is the entropy‐driven recovery of a mechanical deformation, which was obtained before by application of external stress and was temporarily fixed by ...
Marc Behl, Muhammad Yasar Razzaq, Andreas Lendlein   +2 more
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Shape-Memory Polymers and Shape-Changing Polymers

2009
The ability of polymers to respond to external stimuli is of high scientific and technological significance. In the last few years, research activities have been intensified substantially, exploring whether stimuli-sensitive polymers can be designed that move actively. In this review actively-moving materials were classified according to the underlying
Marc Behl, Jörg Zotzmann, Andreas Lendlein   +2 more
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Shape memory polymer nanocomposites

Acta Materialia, 2002
The paper describes the fabrication and characterization of composites with a shape memory polymer matrix and SiC nanoparticulate reinforcements. Composites based on a SMP matrix are active materials capable of recovering relatively large mechanical strains due to the application of heat.
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Biodegradable Shape-Memory Polymers

2019
Biodegradable shape-memory polymers (BSMP) have arisen as highly promising materials for biomedical applications due to their valuable properties. Their chemical and structural diversities, low toxicity, biodegradation, and resorption added to their capability to adapt their shape due to their shape-memory property make them excellent materials for ...
Leire Ruiz-Rubio, Leyre Pérez-Álvarez, José Luis Vilas-Vilela   +2 more
openaire   +1 more source