Epoxy Nanocomposites Reinforced with Functionalized Carbon Nanotubes.

Anton Mostovoy,Marina Lopukhova,Andrey Yakovlev,Vitaly Tseluikin

doi:10.3390/polym12081816

Anton Mostovoy, Marina Lopukhova + Show 2 more

Open Access

https://doi.org/10.3390/polym12081816

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Journal: Polymers	Publication Date: Aug 13, 2020
Citations: 36	License type: CC BY 4.0

Affiliation: Yuri Gagarin State Technical University of Saratov

Abstract

In this article, amino functionalized multiwalled carbon nanotubes (MWCNTs) were prepared by chemical modification of the surface of a MWCNTs using γ-aminopropyltriethoxysilane (APTES) and dispersed into the epoxy composition. The modifying agent (APTES) was directly deposited on the MWCNTs surfaces. For the functionalization of MWCNTs, was used not the APTES concentrate, as it had been described in previous works, but its freshly prepared aqueous solution. Properties of APTES-treated MWCNTs were characterized by transmission electron microscope (TEM), Raman spectroscopy and FT-IR. The results showed that the functionalization and chemical compatibility of APTES-treated MWCNTs with epoxy composition provides their best dispersion in the epoxy composition, had important influence on curing behavior, structure and physicochemical properties of the epoxy composites plasticized with trichloroethyl phosphate. The results showed that the functionalization and chemical compatibility of APTES-treated MWCNTs with epoxy composition provides increased of physicomechanical properties of epoxy composites: bending stress increases by 194% and bending modulus increases by 137%, the tensile strength increases by 108% and the tensile elastic modulus increases by 52%, impact strength increases by 300%, in comparison with plasticized epoxy composite that does not contain MWCNTs.

Highlights

Research in the field of polymer modification with functional additives is widely used to develop polymer composites with a given set of consumer characteristics [1,2,3]
The results showed that the functionalization and chemical compatibility of APTES-treated multiwalled carbon nanotubes (MWCNTs) with epoxy composition provides their best dispersion in the epoxy composition, had important influence on curing behavior, structure and physicochemical properties of the epoxy composites plasticized with trichloroethyl phosphate
194% and bending modulus increases by 137%, the tensile strength increases by 108% and the tensile elastic modulus increases by 52%, impact strength increases by 300%, in comparison with plasticized epoxy composite that does not contain MWCNTs

Summary

Introduction

Research in the field of polymer modification with functional additives is widely used to develop polymer composites with a given set of consumer characteristics [1,2,3]. The results showed that the functionalization of MWCNTs provides their best dispersion in the epoxy composition, had important influence on structure, physicochemical and mechanical properties: MWCNT-BeGE/epoxy nanocomposites exhibited increasing flexural strength and modulus of 22.9% and 37.8%, respectively compared with the neat epoxy. The amino groups on the surface of CNTs, as reactive chemical functional groups, can have an effect on CNTs dispersion, the curing reaction, and interfacial interaction in epoxy composites [23,24]. The results results showed showed that that the functionalization and chemical compatibility of APTES-treated MWCNTs with epoxy composition provides their best dispersion in the epoxy composition, had important influence on curing behavior, structure, physicochemical and mechanical properties of the epoxy composites plasticized with trichloroethyl phosphate.

Properties

Discussion

Relative effective agglomerate agglomerate size size D

FT-IR spectroscopy

Conclusions