Physico–mechanical properties of poly(ethylene‐co‐vinyl acetate)/acrylonitrile‐butadiene rubber/multi‐walled carbon nanotubes nanocomposites

The influence of multi‐walled carbon nanotubes (MWCNTs) on thermal, mechanical and wetting properties as well as rheological behavior of poly(ethylene‐co‐vinyl acetate) (EVA)/acrylonitrile‐butadiene rubber nanocomposites were studied. The solid surface free energy (γs), work of adhesion (WA), interf...

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Vydáno v:Polymer composites Ročník 43; číslo 7; s. 4358 - 4370
Hlavní autoři: Razavi‐Nouri, Mohammad, Salavati, Masoud
Médium: Journal Article
Jazyk:angličtina
Vydáno: Hoboken, USA John Wiley & Sons, Inc 01.07.2022
Blackwell Publishing Ltd
Témata:
Butadiene
Carbon
Contact angle
Crystallization
Ethylene vinyl acetates
Free energy
Interaction parameters
Mathematical analysis
Mechanical properties
Melting points
microstructure
Multi wall carbon nanotubes
Nanocomposites
Nucleation
Quadratic equations
Rheological properties
rheology
Rubber
Solid surfaces
Tensile strength
thermal properties
Vinyl acetate
Wetting
Yield stress
ISSN:0272-8397, 1548-0569
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Shrnutí:The influence of multi‐walled carbon nanotubes (MWCNTs) on thermal, mechanical and wetting properties as well as rheological behavior of poly(ethylene‐co‐vinyl acetate) (EVA)/acrylonitrile‐butadiene rubber nanocomposites were studied. The solid surface free energy (γs), work of adhesion (WA), interfacial free energy (γsl), spreading coefficient (Sc) and Girifalco‐Good's interaction parameter (ϕ) were calculated for the materials fabricated. The results showed that the contact angle and γsl decreased; however, γs, WA, Sc, and ϕ increased with the increase in MWCNTs content. The maximum tensile strength and toughness were obtained for the nanocomposite containing 1 wt% nanofillers. It was also found that both of the relaxation ratio (Rr) and relaxation rate index (n) decreased with increasing in the carbon nanotubes (CNTs) concentration. The results designated that the values of Rr and n for the nanocomposite containing 7 wt% MWCNTs were 19% and 60% smaller than those of the unfilled blend, respectively. The Casson plot analysis indicated that the yield stress of the molten materials incremented with the increase in MWCNTs loading according to a quadratic equation. The analysis of crystallization exotherms and melting endotherms revealed that CNTs triggered the crystallization process at slightly higher temperature, however, melting point slightly and the rate of nucleation noticeably reduced with the increase in the nanofillers content.
Bibliografie:Funding information
Iran Polymer and Petrochemical Institute, Grant/Award Number: 31794107
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ISSN:0272-8397
1548-0569
DOI:10.1002/pc.26697