About: Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels

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About: Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Swelling and dynamic mechanical behavior in a broad frequency range of homogeneous and porous poly(2-hydroxyethyl methacrylate) gels were studied in relation to their matrix structure, gel morphology and nature of the swelling medium. Very lightly cross-linked gels showed up relatively large mechanical losses caused by slow relaxation of hydrophobic physical associates still proceeding at frequency 103 Hz. The macroporous gels of fused-spheres type morphology contained many dangling aggregates not bearing the stress which caused concentration of the stresses in the load bearing paths through the matrix. This is the reason for the sudden drop of storage modulus. In the α-relaxation region, the loss factors for homogeneous and porous gels merged into a single master curve. Reswelling of gels in a poor solvent caused a decrease of the swelling degree and shifted their α-relaxation to lower frequencies; reswelling in good solvent shifted the maximum of α-relaxation to higher frequencies. Swelling and dynamic mechanical behavior in a broad frequency range of homogeneous and porous poly(2-hydroxyethyl methacrylate) gels were studied in relation to their matrix structure, gel morphology and nature of the swelling medium. Very lightly cross-linked gels showed up relatively large mechanical losses caused by slow relaxation of hydrophobic physical associates still proceeding at frequency 103 Hz. The macroporous gels of fused-spheres type morphology contained many dangling aggregates not bearing the stress which caused concentration of the stresses in the load bearing paths through the matrix. This is the reason for the sudden drop of storage modulus. In the α-relaxation region, the loss factors for homogeneous and porous gels merged into a single master curve. Reswelling of gels in a poor solvent caused a decrease of the swelling degree and shifted their α-relaxation to lower frequencies; reswelling in good solvent shifted the maximum of α-relaxation to higher frequencies. (en)
Title	Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels (en)
skos:prefLabel	Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels Rheology and porosity control of poly(2-hydroxyethyl methacrylate) hydrogels (en)
skos:notation	RIV/61389013:_____/13:00388196!RIV13-AV0-61389013
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP101/12/1306)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Dušek, Karel Dušková-Smrčková, Miroslava Šlouf, Miroslav Karpushkin, Evgeny
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	102902
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/13:00388196
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hydrogel; mechanical properties; swelling (en)
http://linked.open.../riv/klicoveSlovo	mechanical properties swelling hydrogel
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[0C4E63B4B737]
http://linked.open...i/riv/nazevZdroje	Polymer
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Biomechanical modeling of human voice production - way to artificial vocal folds
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	54
http://linked.open...iv/tvurceVysledku	Dušek, Karel Šlouf, Miroslav Dušková-Smrčková, Miroslava Karpushkin, Evgeny
http://linked.open...ain/vavai/riv/wos	000314085000025
issn	0032-3861
number of pages	12 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.polymer.2012.11.055

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