Temperature-induced phase transition in hydrogels of interpenetrating networks poly(N-isopropylmethacrylamide)/poly(N-isopropylacrylamide)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10189385" target="_blank" >RIV/00216208:11320/13:10189385 - isvavai.cz</a>

Alternative codes found

RIV/61389013:_____/13:00395900

Result on the web

<a href="http://dx.doi.org/10.1007/s00396-013-2992-z" target="_blank" >http://dx.doi.org/10.1007/s00396-013-2992-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00396-013-2992-z" target="_blank" >10.1007/s00396-013-2992-z</a>

Result language

angličtina

Original language name

Temperature-induced phase transition in hydrogels of interpenetrating networks poly(N-isopropylmethacrylamide)/poly(N-isopropylacrylamide)

Original language description

The combination of H-1 NMR spectroscopy, DSC, dynamic mechanical spectroscopy, and optical microscopy was used to investigate temperature-induced volume phase transition in hydrogels of interpenetrating networks (IPNs) poly(N-isopropylmethacrylamide)/poly(N-isopropylacrylamide) (PNIPMAm/PNIPAm) with various PNIPMAm content. In these IPNs, both networks are thermosensitive; such systems were not examined so far. All methods showed phase transition starting at 307 K, which is the volume phase transition temperature of PNIPAm, the major network component. Only the sample with the lowest content of PNIPAm (similar to 54 %) shows two-step collapse transition, other samples with higher PNIPAm content show a single transition in NMR and DSC which indicates enhanced mutual entanglement of both components. In all samples, the phase transition results in substantial increase of both components of the shear modulus. Although the properties of all samples change with temperature in similar way, di

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/GA202%2F09%2F1281" target="_blank" >GA202/09/1281: Stimuli-responsive multicomponent polymer systems in aqueous solutions and gels investigated by NMR and other methods</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

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

Name of the periodical

Colloid and Polymer Science

ISSN

0303-402X

e-ISSN

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Volume of the periodical

291

Issue of the periodical within the volume

10

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

2409-2417

UT code for WoS article

000324559200015

EID of the result in the Scopus database

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