Epoxy networks and hydrogels prepared from alpha,omega-diamino terminated poly(oxypropylene)-b-poly(oxyethylene)-b-poly(oxypropylene) and polyoxypropylene bis(glycidyl ether)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10317277" target="_blank" >RIV/00216208:11320/15:10317277 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23640/15:43927389

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2014.11.005" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2014.11.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2014.11.005" target="_blank" >10.1016/j.eurpolymj.2014.11.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Epoxy networks and hydrogels prepared from alpha,omega-diamino terminated poly(oxypropylene)-b-poly(oxyethylene)-b-poly(oxypropylene) and polyoxypropylene bis(glycidyl ether)

Popis výsledku v původním jazyce

A series of hydrophilic epoxy networks was prepared by reaction of alpha,omega-diamino terminated polyoxypropylene-b-polyoxyethylene-b-polyoxypropylene of average molar mass 2000 g mol(-1) with polyoxypropylene bis(glycidyl ether) of average molar mass 640 g mol(-1) Absence of microphase separation in the networks at ambient and higher temperatures was proved by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Cooling of the networks to subambient temperatures induces microphase separation via crystallization: the crystallites of polyoxyethylene formed act as a reinforcing filler in the surrounding amorphous network phase. Hydrogels obtained by swelling of the networks in water deswell continuously with increasing temperature. The deswelling becomes less pronounced with increasing POE content and decreasing network density of the epoxy network. In cooling of the hydrogels to low temperatures the main part of water crystallizes. Water crystallites are dispersed in the amorphous network swollen with remaining no-crystallized water. The hydrogels prepared can found applications in sensors and actuators working in aqueous environment.

Název v anglickém jazyce

Epoxy networks and hydrogels prepared from alpha,omega-diamino terminated poly(oxypropylene)-b-poly(oxyethylene)-b-poly(oxypropylene) and polyoxypropylene bis(glycidyl ether)

Popis výsledku anglicky

A series of hydrophilic epoxy networks was prepared by reaction of alpha,omega-diamino terminated polyoxypropylene-b-polyoxyethylene-b-polyoxypropylene of average molar mass 2000 g mol(-1) with polyoxypropylene bis(glycidyl ether) of average molar mass 640 g mol(-1) Absence of microphase separation in the networks at ambient and higher temperatures was proved by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). Cooling of the networks to subambient temperatures induces microphase separation via crystallization: the crystallites of polyoxyethylene formed act as a reinforcing filler in the surrounding amorphous network phase. Hydrogels obtained by swelling of the networks in water deswell continuously with increasing temperature. The deswelling becomes less pronounced with increasing POE content and decreasing network density of the epoxy network. In cooling of the hydrogels to low temperatures the main part of water crystallizes. Water crystallites are dispersed in the amorphous network swollen with remaining no-crystallized water. The hydrogels prepared can found applications in sensors and actuators working in aqueous environment.

Druh

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

CEP obor

CD - Makromolekulární chemie

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0088" target="_blank" >ED2.1.00/03.0088: Centrum nových technologií a materiálů (CENTEM)</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

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

62

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

19-30

Kód UT WoS článku

000348486200003

EID výsledku v databázi Scopus

2-s2.0-84910650975