Thermally Responsive Polymer Vesicles

2007 ◽  
Vol 46 (9) ◽  
pp. 1370-1372 ◽  
Author(s):  
Yotaro Morishima
Keyword(s):  
Thermally Responsive ◽  
Polymer Vesicles ◽  
Responsive Polymer

Stimuli-responsive polymer vesicles

Soft Matter ◽  
2009 ◽  
Vol 5 (5) ◽  
pp. 927 ◽  
Author(s):  
Min-Hui Li ◽  
Patrick Keller
Keyword(s):  
Stimuli Responsive ◽  
Polymer Vesicles ◽  
Responsive Polymer ◽  
Stimuli Responsive Polymer

Passive flow control in microdevices using thermally responsive polymer solutions

2006 ◽  
Vol 18 (5) ◽  
pp. 053103 ◽  
Author(s):  
Boris Stoeber ◽  
Che-Ming Jack Hu ◽  
Dorian Liepmann ◽  
Susan J. Muller
Keyword(s):  
Flow Control ◽  
Polymer Solutions ◽  
Passive Flow Control ◽  
Thermally Responsive ◽  
Passive Flow ◽  
Responsive Polymer

Thermally Responsive Structures for Gastric Pacing and Other Applications

2010 ◽  
Author(s):  
Naga S. Korivi ◽  
Charles Halliburton ◽  
Pratul K. Ajmera
Keyword(s):  
Body Temperature ◽  
Solid Phase ◽  
Polymer Structure ◽  
Important Application ◽  
The Body ◽  
Channel Network ◽  
Gastric Pacing ◽  
Thermally Responsive ◽  
Responsive Polymer ◽  
Polymeric Layer

We report on the development of a polymeric layer consisting of an embedded channel network. The channels are filled with a thermally responsive polymer. The embedded thermally responsive polymer is in solid phase in room ambient, but changes to liquid at physiological body temperature (∼37 °C). This phase change results in the polymer structure changing to a more flexible state. An important application of this polymer layer is its use as a thermally regulated support structure for a gastric pacing electrode, to give some rigidity to the electrode body preferable during implantation surgery, while changing to a more flexible state inside the body as the embedded polymer subsequently melts at physiological temperature. The latter is expected to reduce complications caused by a rigid device.

Magnetically Isotropic–Anisotropic Change of Thermally Responsive Polymer Gels

2003 ◽  
Vol 42 (Part 1, No. 1) ◽  
pp. 102-103 ◽  
Author(s):  
Norihiro Kato ◽  
Yasuzo Sakai ◽  
Daisuke Kagaya ◽  
Syunsuke Sekiya
Keyword(s):  
Polymer Gels ◽  
Thermally Responsive ◽  
Responsive Polymer

Effect of the grafting ratio of poly(N-isopropylacrylamide) on thermally responsive polymer brush surfaces

2016 ◽  
Vol 40 (2) ◽  
pp. 524-531 ◽  
Author(s):  
Yangyang Shen ◽  
Lianqing Dong ◽  
Yanli Liang ◽  
Zongjian Liu ◽  
Rongji Dai ◽  
...  
Keyword(s):  
Polymer Brush ◽  
Thermally Responsive ◽  
Grafting Ratio ◽  
Responsive Polymer

scholarly journals Thermally responsive polymeric hydrogel brushes: synthesis, physical properties and use for the culture of chondrocytes

2006 ◽  
Vol 4 (12) ◽  
pp. 117-126 ◽  
Author(s):  
John Collett ◽  
Aileen Crawford ◽  
Paul V Hatton ◽  
Mark Geoghegan ◽  
Stephen Rimmer
Keyword(s):  
Crosslink Density ◽  
Cell Attachment ◽  
Viable Cell ◽  
Contact Angles ◽  
Polymer Chains ◽  
Solution Temperature ◽  
Critical Solution Temperature ◽  
Thermally Responsive ◽  
Isopropyl Acrylamide ◽  
Responsive Polymer

Hydrogel brushes are materials composed of a water-swollen network, which contains polymer chains that are grafted with another polymer. Using a thermally responsive polymer, poly( N -isopropyl acrylamide) (polyNIPAM), as the graft component we are able to maintain the critical solution temperature ( T crit ), independent of the overall composition of the material, at approximately 32°C. The change in swelling at T crit is a function of the amount of polyNIPAM in the system. However, there is a much smaller change in the surface contact angles at T crit . PolyNIPAM-based materials have generated considerable interest, as ‘smart’ substrates for the culture of cells and here, we show the utility of hydrogel brushes in cell culture. Chondrocytes attached to the hydrogel brushes and yielded viable cell cultures. Moreover, the chondrocytes could be released from the hydrogel brushes without the use of proteases by reducing the temperature of the cultures to below T crit to induce a change in the conformation of the polyNIPAM chain at T crit . The importance of the crosslink hydrogel component is illustrated by significant changes in cell attachment/cell viability as the crosslink density is changed.

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