SANS study on influence of temperature on nanophase separation in epoxy-based hydrogels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10318081" target="_blank" >RIV/00216208:11320/15:10318081 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.08.009" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2015.08.009</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.08.009" target="_blank" >10.1016/j.eurpolymj.2015.08.009</a>

Jazyk výsledku

angličtina

Název v původním jazyce

SANS study on influence of temperature on nanophase separation in epoxy-based hydrogels

Popis výsledku v původním jazyce

Effect of temperature on nanophase separated structure of epoxy-based hydrogels containing polyoxyethylene (POE), polyoxypropylene (POP) and diglycidyl ether of Bisphenol A propoxylate (PDGEBA) was studied using small-angle neutron scattering (SANS). Atthe macroscopic level, increase of temperature causes an expulsion of water from the hydrogels. At the microscopic level, the expulsion of water is accompanied by redistribution of water and POE inside the hydrogels. Two kinds of structure have been revealed in the hydrogels by SANS. The structure with shorter characteristic length measured by Bragg's distance (ca 70-80 angstrom) is observed in all hydrogels and at all investigated temperatures (5-80 degrees C). It is attributed to a distribution of water into water-rich and water-poor domains caused by nanophase separation of the crosslinked system due to differences in interaction of individual network building blocks with water. The water-rich domains consist of a part of POE blocks

Název v anglickém jazyce

SANS study on influence of temperature on nanophase separation in epoxy-based hydrogels

Popis výsledku anglicky

Effect of temperature on nanophase separated structure of epoxy-based hydrogels containing polyoxyethylene (POE), polyoxypropylene (POP) and diglycidyl ether of Bisphenol A propoxylate (PDGEBA) was studied using small-angle neutron scattering (SANS). Atthe macroscopic level, increase of temperature causes an expulsion of water from the hydrogels. At the microscopic level, the expulsion of water is accompanied by redistribution of water and POE inside the hydrogels. Two kinds of structure have been revealed in the hydrogels by SANS. The structure with shorter characteristic length measured by Bragg's distance (ca 70-80 angstrom) is observed in all hydrogels and at all investigated temperatures (5-80 degrees C). It is attributed to a distribution of water into water-rich and water-poor domains caused by nanophase separation of the crosslinked system due to differences in interaction of individual network building blocks with water. The water-rich domains consist of a part of POE blocks

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-23392S" target="_blank" >GA13-23392S: Vývoj a charakterizace nových teplotně citlivých polymerních hydrogelů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

71

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

336-351

Kód UT WoS článku

000362603800027

EID výsledku v databázi Scopus

2-s2.0-84941950512