Functional properties of poly(trimethylene terephthalate)-block-poly(caprolactone) based nanocomposites containing graphene oxide (GO) and reduced graphene oxide (rGO)

This work reports a study on the influence of graphene oxide (GO) and reduced graphene oxide (rGO) on the functional properties of poly(trimethylene terephthalate)-block-poly(caprolactone) (PTT-block-PCL-T) (75/25 wt.%/wt.%) copolymer, obtained from dimethyl terephthalate (DMT), 1,3-biopropanediol a...

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Detalhes bibliográficos
Autores: Paszkiewicz, Sandra, Pawlikowska, Daria, Kurcz, Magdalena, Szymczyk, Anna, Irska, Izabela, Stanik, Rafał, Gude, Maik, Linares, Amelia, Ezquerra, Tiberio A., Lipińska, Ludwika, Woluntarski, Michał, Zubkiewicz, Agata, Piesowicz, Elżbieta
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/193504
Acesso em linha:http://hdl.handle.net/10261/193504
Access Level:acceso abierto
Palavra-chave:Block copolymers
Graphene oxide
Reduced graphene oxide
in situ polymerization
Electrical conductivity
Thermal conductivity
Mechanical properties
Morphology
Descrição
Resumo:This work reports a study on the influence of graphene oxide (GO) and reduced graphene oxide (rGO) on the functional properties of poly(trimethylene terephthalate)-block-poly(caprolactone) (PTT-block-PCL-T) (75/25 wt.%/wt.%) copolymer, obtained from dimethyl terephthalate (DMT), 1,3-biopropanediol and polycaprolactone diol (PCL) via in situ polymerization. The article presents, if and how the reduction of graphene oxide, in comparison to the non-reduced one, can affect morphological, thermal, electrical and mechanical properties. SEM examination confirms/reveals the homogeneous distribution of GO/rGO nanoplatelets in the PTT-block-PCL-T copolymer matrix. More than threefold increase in the value of the tensile modulus is achieved by the addition of 1.0 wt.% of GO and rGO. Moreover, the thermal conductivity and thermal stability of the GO and rGO-based nanocomposites are also improved. The differential scanning calorimetry (DSC) measurement indicates that the incorporation of GO and rGO has a remarkable impact on the crystallinity of the nanocomposites (an increase of crystallization temperature up to 58 °C for nanocomposite containing 1.0 wt.% of GO is observed). Therefore, the high performances of the PTT-block-PCL-T-based nanocomposites are mainly attributed to the uniform dispersion of nanoplatelets in the polymer matrix and strong interfacial interactions between components.

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