Phase transition in hydrogels of thermoresponsive semi-interpenetrating and interpenetrating networks of poly(N,N-diethylacrylamide) and polyacrylamide

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00463812" target="_blank" >RIV/61389013:_____/16:00463812 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/16:10332041

Result on the web

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2016.10.010" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2016.10.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2016.10.010" target="_blank" >10.1016/j.eurpolymj.2016.10.010</a>

Result language

angličtina

Original language name

Phase transition in hydrogels of thermoresponsive semi-interpenetrating and interpenetrating networks of poly(N,N-diethylacrylamide) and polyacrylamide

Original language description

Temperature-induced phase transition in hydrogels of semi-interpenetrating (SIPNs) and interpenetrating (IPNs) polymer networks of thermoresponsive poly(N,N-diethylacrylamide) (PDEAAm) and hydrophilic polyacrylamide (PAAm) was studied by a combination of 1H NMR spectroscopy, small-angle neutron scattering (SANS) and DSC. The effect of various network composition and reverse sequence in the preparation procedure of the network on the volume phase transition was examined. Transition temperature linearly increased with the content of PAAm component in SIPNs and IPNs. SANS results revealed in investigated SIPN and IPN hydrogels two types of regions (aggregates), small and large. At temperature above the phase transition the small and large regions are related to compact multi-chain aggregates with smooth and fuzzy surface, respectively. From NMR results it follows that the individual polymer groups participated in the transition to various extent dependently on the type of hydrogel preparation. We found that parameters of the phase transition are tunable not only by composition of the SIPNs and IPNs but also by the preparation process. A certain portion of water bound in globular structures and a slow exchange regime between “bound and “free water were established by NMR methods for all investigated SIPNs and IPNs hydrogels.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA13-23392S" target="_blank" >GA13-23392S: Designing and characterization of novel thermosensitive polymer hydrogels</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Volume of the periodical

85

Issue of the periodical within the volume

December

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

000390497100001

EID of the result in the Scopus database

2-s2.0-84991594264