Fast temperature-responsive nanocomposite PNIPAM hydrogels with controlled pore wall thickness: force and rate of T-response

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F12%3A00382267" target="_blank" >RIV/61389013:_____/12:00382267 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2012.09.007" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2012.09.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2012.09.007" target="_blank" >10.1016/j.eurpolymj.2012.09.007</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fast temperature-responsive nanocomposite PNIPAM hydrogels with controlled pore wall thickness: force and rate of T-response

Popis výsledku v původním jazyce

Fast thermoresponsive porous hydrogels based on the PNIPAM?silica nanocomposite were prepared and optimized in order to obtain increased force (pressure) response to temperature stimuli. This was achieved by increasing pore wall thickness via changing the monomers concentration during the hydrogels? cryogenic synthesis. The mechanically strong and compact pore structure of the best gel made it possible to increase the force (pressure) response 3 times and the shear modulus 4 times, while the volume ratio of swollen to deswollen state remained unchanged, and the kinetics of the T-response was only moderately slower than in the case of the analogous ultra-fast responsive soft gels. The porous structure of the hydrogels (SEM), the dispersion and particlesize of the nanofiller in the pore walls (TEM), as well as the swelling behavior and time-resolved force response to T-change are discussed in this work.

Název v anglickém jazyce

Fast temperature-responsive nanocomposite PNIPAM hydrogels with controlled pore wall thickness: force and rate of T-response

Popis výsledku anglicky

Fast thermoresponsive porous hydrogels based on the PNIPAM?silica nanocomposite were prepared and optimized in order to obtain increased force (pressure) response to temperature stimuli. This was achieved by increasing pore wall thickness via changing the monomers concentration during the hydrogels? cryogenic synthesis. The mechanically strong and compact pore structure of the best gel made it possible to increase the force (pressure) response 3 times and the shear modulus 4 times, while the volume ratio of swollen to deswollen state remained unchanged, and the kinetics of the T-response was only moderately slower than in the case of the analogous ultra-fast responsive soft gels. The porous structure of the hydrogels (SEM), the dispersion and particlesize of the nanofiller in the pore walls (TEM), as well as the swelling behavior and time-resolved force response to T-change are discussed in this work.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F09%2F1101" target="_blank" >GA106/09/1101: Vývoj nových typů matric odvozených z pyrolyzovaných pryskyřic pro kompozity vyztužené keramickými vlákny</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

48

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1997-2007

Kód UT WoS článku

000311600400004

EID výsledku v databázi Scopus

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