Epoxy modified with polymer-grafted GO: role of bimodal functionalization in formation of ordered structures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F21%3A00544215" target="_blank" >RIV/61389013:_____/21:00544215 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0254058421007793?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0254058421007793?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matchemphys.2021.124996" target="_blank" >10.1016/j.matchemphys.2021.124996</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Epoxy modified with polymer-grafted GO: role of bimodal functionalization in formation of ordered structures

Popis výsledku v původním jazyce

The modification of epoxy with polymer-grafted graphene oxide (GO) is a radical alternative to mere combination of GO with a polymeric modifier. Here, this aspect is revealed for the case of bimodal grafting of GO with hydrophobic polybutadiene and hydrophilic polyoxypropylene or polyethylene glycol utilizing grafting-to approach to link different chains in the plane and edge area of GO. The results indicate fair ability of bimodally grafted GO to form ordered lamellar structures in epoxy. However, these structures show larger distance between less aligned GO plates in contrast to tightly aligned GO arrangement in case of single grafting. This is enabled by repulsive interactions between dissimilar chains. Such a structure with higher mobility of grafted chains has favorable effect on mechanical performance of epoxy. The effect of chain type and geometry of grafting is highlighted as well. Important finding is promotion of lamellar structure formation also by grafted low-m. w. compounds.

Název v anglickém jazyce

Epoxy modified with polymer-grafted GO: role of bimodal functionalization in formation of ordered structures

Popis výsledku anglicky

The modification of epoxy with polymer-grafted graphene oxide (GO) is a radical alternative to mere combination of GO with a polymeric modifier. Here, this aspect is revealed for the case of bimodal grafting of GO with hydrophobic polybutadiene and hydrophilic polyoxypropylene or polyethylene glycol utilizing grafting-to approach to link different chains in the plane and edge area of GO. The results indicate fair ability of bimodally grafted GO to form ordered lamellar structures in epoxy. However, these structures show larger distance between less aligned GO plates in contrast to tightly aligned GO arrangement in case of single grafting. This is enabled by repulsive interactions between dissimilar chains. Such a structure with higher mobility of grafted chains has favorable effect on mechanical performance of epoxy. The effect of chain type and geometry of grafting is highlighted as well. Important finding is promotion of lamellar structure formation also by grafted low-m. w. compounds.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA19-06065S" target="_blank" >GA19-06065S: Optimalizace termosetových kompozitů tvorbou samouspořádaných struktur s využitím modifikovaných uhlíkových nanodestiček</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials Chemistry and Physics

ISSN

0254-0584

e-ISSN

1879-3312

Svazek periodika

272

Číslo periodika v rámci svazku

1 November

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

8

Strana od-do

124996

Kód UT WoS článku

000683020400003

EID výsledku v databázi Scopus

2-s2.0-85109618465