6533b82cfe1ef96bd128ea85
RESEARCH PRODUCT
Ethylene-vinyl Acetate Thermoplastic Copolymers Filled with Multiwall Carbon Nanotubes: Effect of Hydrothermal Ageing on Mechanical, Thermal, and Electrical Properties
Olesja StarkovaKarl SchultePetra PötschkeMatthias EdelmannLuís Antônio Sanchez De Almeida PradoSamuel T. BuschhornSamuel T. Buschhornsubject
chemistry.chemical_classificationNanocompositeThermoplasticMaterials sciencePolymers and PlasticsGeneral Chemical EngineeringOrganic ChemistryComposite numberEthylene-vinyl acetateCarbon nanotubeHydrothermal circulationlaw.inventionchemistry.chemical_compoundchemistrylawMaterials ChemistryCopolymerComposite materialElastic modulusdescription
A range of properties of two commercial thermoplastic ethylene-vinyl acetate (EVA) copolymers, Elvax 420 and Elvax 450, neat and as melt-mixed composite filled with 15 wt.-% of multi-wall carbon nanotubes (MWCNTs), are studied in the “as produced” state and after hydrothermal ageing. Addition of MWCNTs into the neat copolymers introduces the functionality of electrical conductivity and significantly improves their mechanical properties, while thermal characteristics are slightly affected by the presence of carbon nanotubes. A remarkable increase of the elastic modulus (150%) and stress at failure (50%) in stress–strain experiments as well as creep resistance (40%) of the nanocomposites in comparison to the neat copolymers is achieved. Hydrothermal ageing results in deterioration of the elastic and ultimate properties of the materials, however its severe effect is less pronounced in the case of nanocomposites.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-05-10 | Macromolecular Materials and Engineering |