Light-responsive hybrids based on carbon nanotubes with covalently attached PHEMA-g-PCL brushes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F21%3A63528659" target="_blank" >RIV/70883521:28610/21:63528659 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acs.macromol.0c02701" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.macromol.0c02701</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.macromol.0c02701" target="_blank" >10.1021/acs.macromol.0c02701</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Light-responsive hybrids based on carbon nanotubes with covalently attached PHEMA-g-PCL brushes

Popis výsledku v původním jazyce

Carbon nanotube (CNT)-based materials allow for the direct conversion of light into heat and then into mechanical force in the so-called photo-mechanical effect. This effect has been observed almost solely in the form of polymer (nano)composites, where CNTs act as active fillers. To overcome the issue with heterogeneous distribution, hybrids based on multiwalled carbon nanotubes (MWCNTs) covalently modified with poly(2-hydroxyethyl methacrylate)-graf t-poly(∈-caprolactone) brushes (MWCNTs-PHEMA-g-PCL) were prepared, and their photo-mechanical actuator behavior, without the need for mixing with an elastomer, was proven. The MWCNTs-PHEMA-g-PCL hybrids were synthesized using the surface-initiated reversible addition- fragmentation chain transfer polymerization of 2-hydroxyethyl methacrylate, with subsequent ring-opening polymerization of ∈- caprolactone from the pendant hydroxyl groups of PHEMA. It was found that the MWCNTs-PHEMA-g-PCL hybrid material containing 24 wt % MWCNTs possesses the properties of thermoplastic elastomers, while retaining their elastic properties at least up to 100 °C. It exhibits an excellent, fully reversible, repeatable, and fast photo-mechanical actuation behavior.

Název v anglickém jazyce

Light-responsive hybrids based on carbon nanotubes with covalently attached PHEMA-g-PCL brushes

Popis výsledku anglicky

Carbon nanotube (CNT)-based materials allow for the direct conversion of light into heat and then into mechanical force in the so-called photo-mechanical effect. This effect has been observed almost solely in the form of polymer (nano)composites, where CNTs act as active fillers. To overcome the issue with heterogeneous distribution, hybrids based on multiwalled carbon nanotubes (MWCNTs) covalently modified with poly(2-hydroxyethyl methacrylate)-graf t-poly(∈-caprolactone) brushes (MWCNTs-PHEMA-g-PCL) were prepared, and their photo-mechanical actuator behavior, without the need for mixing with an elastomer, was proven. The MWCNTs-PHEMA-g-PCL hybrids were synthesized using the surface-initiated reversible addition- fragmentation chain transfer polymerization of 2-hydroxyethyl methacrylate, with subsequent ring-opening polymerization of ∈- caprolactone from the pendant hydroxyl groups of PHEMA. It was found that the MWCNTs-PHEMA-g-PCL hybrid material containing 24 wt % MWCNTs possesses the properties of thermoplastic elastomers, while retaining their elastic properties at least up to 100 °C. It exhibits an excellent, fully reversible, repeatable, and fast photo-mechanical actuation behavior.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Macromolecules

ISSN

0024-9297

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

2412-2426

Kód UT WoS článku

000629151900035

EID výsledku v databázi Scopus

2-s2.0-85102074943