Poly(N,N '-Diethylacrylamide)-Based Thermoresponsive Hydrogels with Double Network Structure
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10420641" target="_blank" >RIV/00216208:11320/20:10420641 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6UgNecBV0s" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=6UgNecBV0s</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/polym12112502" target="_blank" >10.3390/polym12112502</a>
Alternative languages
Result language
angličtina
Original language name
Poly(N,N '-Diethylacrylamide)-Based Thermoresponsive Hydrogels with Double Network Structure
Original language description
Temperature response of double network (DN) hydrogels composed of thermoresponsive poly(N,N '-diethylacrylamide) (PDEAAm) and hydrophilic polyacrylamide (PAAm) or poly(N,N '-dimethylacrylamide) (PDMAAm) was studied by a combination of swelling measurements, differential scanning calorimetry (DSC) and H-1 NMR and UV-Vis spectroscopies. Presence of the second hydrophilic network in DN hydrogels influenced their thermal sensitivity significantly. DN hydrogels show less intensive changes in deswelling, smaller enthalpy, and entropy changes connected with phase transition and broader temperature interval of the transition than the single network (SN) hydrogels. Above the transition, the DN hydrogels contain significantly more permanently bound water in comparison with SN hydrogels due to interaction of water with the hydrophilic component. Unlike swelling and DSC experiments, a rather abrupt transition was revealed from temperature-dependent NMR spectra. Release study showed that model methylene blue molecules are released from SN and DN hydrogels within different time scale. New thermodynamical model of deswelling behaviour based on the approach of the van't Hoff analysis was developed. The model allows to determine thermodynamic parameters connected with temperature-induced volume transition, such as the standard change of enthalpy and entropy and critical temperatures and characterize the structurally different states of water.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
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Continuities
O - Projekt operacniho programu
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymers [online]
ISSN
2073-4360
e-ISSN
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Volume of the periodical
12
Issue of the periodical within the volume
11
Country of publishing house
CH - SWITZERLAND
Number of pages
18
Pages from-to
2502
UT code for WoS article
000594522700001
EID of the result in the Scopus database
2-s2.0-85094561356