Electrical Conductivity and ESR Studies of Carbon-Black-Loaded Natural Rubber

Siswanto, Muliawati G.; Bo, Na Peng; Parangtopo,; Neubacher, H.; Burton, L. C.

doi:10.5254/1.3536187

Cited by 7 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…0 1990 by The Society of Rheology. Inc. J. Rheol34( l), Jan. 1990 0148~6055/90/010025-10$04.00 25 The simplest mechanical behavior might be expected at very low strains; however, the published data are difficult to reconcile with accepted notions of the morphology of carbon black-rubber composites. At diminished strain amplitudes a significant contribution to the stiffness arises from interaction between aggregates of the carbon black.…”

Section: Introductionmentioning

confidence: 41%

Dynamic mechanical behavior of filled rubber at small strains

Roland

1990

Journal of Rheology

View full text Add to dashboard Cite

SynopsisThe strain and temperature dependence of the dynamic properties of rubber containing various concentrations of carbon black were characterized. The measurements, obtained at lower strain amplitudes ( ~10~') than previous studies, indicate that flocculation of the carbon black particles, and the enhanced modulus and damping effected by it, are likely existent prior to any deformation. The disruption of the carbon black network structure was found to be independent of the mechanical behavior of the polymer, occurring at the same macroscopic strain independently of the stress level. The implications of this in terms of the flocculation process are discussed. At reduced temperatures, filler interparticle interactions intensify, and consequently their contribution to the mechanical properties increases. This greater influence of the filler structure is observed even as the glass transition of the rubber is approached and the behavior of the rubber and carbon black phases converge.

show abstract

Section: Introductionmentioning

confidence: 41%

Dynamic mechanical behavior of filled rubber at small strains

Roland

1990

Journal of Rheology

View full text Add to dashboard Cite

show abstract

“…Appreciable changes in electrical conductivity against degree and rate of mechanical deformation in black filled composites have already been reported in the literature 16–25. The present paper discusses the effect of elongational deformation on the electrical properties of conductive carbon black and SCF filled ethylene–vinyl acetate (EVA), ethylene–propylene–diene rubber (EPDM) and their 50/50 blends.…”

Section: Introductionmentioning

confidence: 79%

Effect of axial stretching on electrical resistivity of short carbon fibre and carbon black filled conductive rubber composites

Das

Chaki

Khastgir

2002

Polymer International

110

View full text Add to dashboard Cite

The variation of electrical resistivity of carbon black and short carbon ®bre (SCF) ®lled rubber composites was studied against the degree of strain at constant strain rate. It was found that both the degree of strain and strain rate affect the electrical resistivity of the composites. The change in resistivity against the strain and strain rate depends both on the concentration and the type of conductive ®ller. The incorporation of short carbon ®bres (SCF) imparts higher conductivity to the composite than carbon black at the same level of loading. Composites ®lled with carbon black exhibit better mechanical properties than SCF ®lled composites. Electrical setting, ie a permanent change in electrical resistivity, was observed during extension±retraction cycles. A good correlation was found between the mechanical response and the electrical response towards strain sensitivity. The results of different experiments are discussed in the light of breakdown and formation of conductive networks in the ®lled rubber composites.

show abstract

“…This change in signal linewidths, with no detectable g value shift, is indicative of exchange narrowing from non orbital electrons. 35 Although a reduction in exchange narrowing is the main cause of line broadening, it has been pointed out that in the absence of the exchange effect, such as in the diluted compounds, the dipolar interaction broadening prevails leading to the resultant linewidth. 36 Therefore, at low nanosheet proportion, the filler particles are dispersed by the interaction with the chitin matrix providing a more pronounced dipole broadening.…”

Section: Esr Studymentioning

confidence: 99%

Chitin based hybrid composites reinforced with graphene derivatives: a nanoscale study

et al. 2015

View full text Add to dashboard Cite

In this work, we present two novel nanostructured hybrid materials based on a chitin matrix loaded with increasing amounts of graphene oxide and reduced graphene oxide nanosheets (nGO and rGO respectively). Both kind materials (Chi:nGO and Chi:rGO) were studied using different spectroscopic and rheological techniques with the aim of understanding the interaction mechanism between chitin and nGO/rGO and explaining how the type of filler and its proportion affects its reinforcement. The production of these hybrids represents not only the obtention of low-cost materials with mechanical resistance but also a good opportunity for developing materials with several applications according to their composition. The nGO and rGO were characterised through FT-IR and ESR for the determination of oxidation degree of each nanofiller. Then, the hybrids were spectroscopically analysed with FT-IR, ESR and SAXS which demonstrated that the components do not interact through covalent bondings and the nanosheets are well-dispersed among the chitin matrix. Finally, a rheological behavior assay results was performed and its results were analysed in terms of G' and η*. In short, all the results allowed us to conclude that nGO acts as a more efficient reinforcer than rGO due to the higher amount of hydrogen bondings established with chitin.

show abstract

Electrical Conductivity and ESR Studies of Carbon-Black-Loaded Natural Rubber

Cited by 7 publications

References 0 publications

Dynamic mechanical behavior of filled rubber at small strains

Dynamic mechanical behavior of filled rubber at small strains

Effect of axial stretching on electrical resistivity of short carbon fibre and carbon black filled conductive rubber composites

Chitin based hybrid composites reinforced with graphene derivatives: a nanoscale study

Contact Info

Product

Resources

About