Investigation of thermo-responsive optical properties of a composite hydrogel
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F10%3A00023493" target="_blank" >RIV/60461373:22340/10:00023493 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Investigation of thermo-responsive optical properties of a composite hydrogel
Original language description
Poly(N-isopropylacrylamide) (PNIPAM) hydrogels crosslinked by methylene bisacrylamide (MBA) are known to exhibit a transition from hydrophilic to hydrophobic character at the lower critical solution temperature (LCST) of approximately 32 °C. This transition is normally accompanied by a volume change of the hydrogel. In this paper we describe a novel method of synthesizing composite PNIPAM/alginate particles that change their optical properties (transparency) in response to a temperature change but keepboth their original shape and size. The method is based on loading the NIPAM monomer into a calcium alginate hydrogel and carrying out the polymerization above the LCST. The thermo-responsive optical properties of the composite particles were characterised in detail by optical microscopy and image analysis. The change in transparency as function of temperature was found to be fully reversible but revealed some hysteresis. An optimum value of PNIPAM concentration in the composite hydrogel
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/KJB401280801" target="_blank" >KJB401280801: Biomimetic Engineering of Active Porous Structures</a><br>
Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN
0927-7757
e-ISSN
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Volume of the periodical
372
Issue of the periodical within the volume
1-3
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
5
Pages from-to
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UT code for WoS article
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EID of the result in the Scopus database
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