Effect of GO modification and curing on formation of ordered structures in epoxy composites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F22%3A00547346" target="_blank" >RIV/61389013:_____/22:00547346 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167577X21017924?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167577X21017924?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matlet.2021.131094" target="_blank" >10.1016/j.matlet.2021.131094</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of GO modification and curing on formation of ordered structures in epoxy composites

Popis výsledku v původním jazyce

Modifications of GO by polymer chains may promote, in addition to exfoliation, also formation of ordered structures in epoxy. However, the contribution of self- assembly in the uncured matrix and reaction-induced phase separation to this process is not clear. SAXS study of analogous liquid and cured epoxy reveals that single grafted GO forms ordered structures only due to RIPS of grafted rubber. The marked self-assembly of bimodally grafted GO (BGO) before curing indicates that such modification changes its ordering performance substantially. Moreover, formation of ordered lamellar structures in liquid epoxy accompanied by easy migration of BGO may lead to formation of these arrays at the interface in carbon fibre composites. As a result, in-situ formation of effective nacre-like structures on the surface of CF, increasing delamination resistance, can be achieved.

Název v anglickém jazyce

Effect of GO modification and curing on formation of ordered structures in epoxy composites

Popis výsledku anglicky

Modifications of GO by polymer chains may promote, in addition to exfoliation, also formation of ordered structures in epoxy. However, the contribution of self- assembly in the uncured matrix and reaction-induced phase separation to this process is not clear. SAXS study of analogous liquid and cured epoxy reveals that single grafted GO forms ordered structures only due to RIPS of grafted rubber. The marked self-assembly of bimodally grafted GO (BGO) before curing indicates that such modification changes its ordering performance substantially. Moreover, formation of ordered lamellar structures in liquid epoxy accompanied by easy migration of BGO may lead to formation of these arrays at the interface in carbon fibre composites. As a result, in-situ formation of effective nacre-like structures on the surface of CF, increasing delamination resistance, can be achieved.

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

2022

Kód důvěrnosti údajů

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

Název periodika

Materials Letters

ISSN

0167-577X

e-ISSN

1873-4979

Svazek periodika

308

Číslo periodika v rámci svazku

Part A

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

131094

Kód UT WoS článku

000711380300008

EID výsledku v databázi Scopus

2-s2.0-85117360138