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Processing methods and vulcanization influence on the electrical and mechanical behavior of isoprene rubber/MWCNT composites.

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Title: Processing methods and vulcanization influence on the electrical and mechanical behavior of isoprene rubber/MWCNT composites.
Authors: Gonçalves, Roger1 (AUTHOR) roger.gabiru@gmail.com, Tozzi, Kaique A1,2 (AUTHOR), Barbosa, Rafael1 (AUTHOR), Fernandes, Carlos HM3 (AUTHOR), Saccardo, Matheus C1 (AUTHOR), Zuquello, Ariel G4 (AUTHOR), Scuracchio, Carlos H1 (AUTHOR)
Source: Progress in Rubber, Plastics & Recycling Technology. Aug2026, Vol. 42 Issue 3, p316-332. 17p.
Subjects: Vulcanization, Rubber, Electric conductivity, Composite materials, Electrodes, Mechanical behavior of materials, Multiwalled carbon nanotubes
Abstract: The burgeoning electronics industry demands flexible and cost-effective electrodes. Despite their inherent insulating nature, conductive rubber composites offer compelling advantages due to their flexibility and resilience. Due to reinforcing properties and high electrical conductivity, these materials can be transformed into viable electrode candidates by incorporating conductive additives like carbon nanotubes (CNTs). This study investigates the influence of dispersion and vulcanization methods on the mechanical and electrical properties of polyisoprene/CNT composites, aiming to optimize their suitability for flexible electrode applications. Two dispersion methods (conventional two-roll mill and latex dispersion) and two vulcanization systems (efficient and conventional) were employed. Comprehensive characterization encompassed electrical (resistivity, impedance spectroscopy), mechanical (tensile tests, rheometry), and interfacial properties (contact angle, zeta potential, linear voltammetry). Results demonstrate that the latex dispersion method significantly outperforms the two-roll mill approach. Latex-dispersed composites exhibited a tenfold increase in electrical conductivity and superior surface properties compared to conventionally dispersed counterparts, from 0.123 to 1.33 mS cm−1. Also, the efficient vulcanization system resulted in a modest decrease in modulus while maintaining tensile strength and significantly improving strain at break, from 1.83 to 6.82 MPa and 82.9 to 607%, respectively. This work provides valuable insights into optimizing dispersion and vulcanization techniques for developing high-performance conductive rubber composites with enhanced electrical and mechanical properties, which are crucial for advancing flexible electrode technologies. [ABSTRACT FROM AUTHOR]
Copyright of Progress in Rubber, Plastics & Recycling Technology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 195471582
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Processing methods and vulcanization influence on the electrical and mechanical behavior of isoprene rubber/MWCNT composites.
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  Data: <searchLink fieldCode="JN" term="%22Progress+in+Rubber%2C+Plastics+%26+Recycling+Technology%22">Progress in Rubber, Plastics & Recycling Technology</searchLink>. Aug2026, Vol. 42 Issue 3, p316-332. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Vulcanization%22">Vulcanization</searchLink><br /><searchLink fieldCode="DE" term="%22Rubber%22">Rubber</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Electrodes%22">Electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Multiwalled+carbon+nanotubes%22">Multiwalled carbon nanotubes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The burgeoning electronics industry demands flexible and cost-effective electrodes. Despite their inherent insulating nature, conductive rubber composites offer compelling advantages due to their flexibility and resilience. Due to reinforcing properties and high electrical conductivity, these materials can be transformed into viable electrode candidates by incorporating conductive additives like carbon nanotubes (CNTs). This study investigates the influence of dispersion and vulcanization methods on the mechanical and electrical properties of polyisoprene/CNT composites, aiming to optimize their suitability for flexible electrode applications. Two dispersion methods (conventional two-roll mill and latex dispersion) and two vulcanization systems (efficient and conventional) were employed. Comprehensive characterization encompassed electrical (resistivity, impedance spectroscopy), mechanical (tensile tests, rheometry), and interfacial properties (contact angle, zeta potential, linear voltammetry). Results demonstrate that the latex dispersion method significantly outperforms the two-roll mill approach. Latex-dispersed composites exhibited a tenfold increase in electrical conductivity and superior surface properties compared to conventionally dispersed counterparts, from 0.123 to 1.33 mS cm−1. Also, the efficient vulcanization system resulted in a modest decrease in modulus while maintaining tensile strength and significantly improving strain at break, from 1.83 to 6.82 MPa and 82.9 to 607%, respectively. This work provides valuable insights into optimizing dispersion and vulcanization techniques for developing high-performance conductive rubber composites with enhanced electrical and mechanical properties, which are crucial for advancing flexible electrode technologies. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Progress in Rubber, Plastics & Recycling Technology is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1177/14777606251321526
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        Text: English
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        PageCount: 17
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      – SubjectFull: Vulcanization
        Type: general
      – SubjectFull: Rubber
        Type: general
      – SubjectFull: Electric conductivity
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Electrodes
        Type: general
      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Multiwalled carbon nanotubes
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      – TitleFull: Processing methods and vulcanization influence on the electrical and mechanical behavior of isoprene rubber/MWCNT composites.
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            – D: 01
              M: 08
              Text: Aug2026
              Type: published
              Y: 2026
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