A rheological method for selecting nano-kaolin powder as filler in SBR rubber

Lagazzo, Alberto; Lenzi, S; Botter, R.; Cirillo, P.; Demicheli, Fabrizio; Beruto, D.

doi:10.1016/j.partic.2010.03.014

Cited by 17 publications

(6 citation statements)

References 23 publications

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“…Our findings keep in line with the current literature, where sensible increments of the mechanical proprieties of electrospun nanofibers were proved, subsequently to the addition of small amount of graphene-derived nanomaterials [23,55]. An increase in the mechanical properties of PCL nanofibers in the presence of GO and RGO nanosheets is attributed to the adhesion between nanosheets and PCL matrix [56].…”

Section: Mrna Extraction and Gene Expression Analysissupporting

confidence: 92%

“Green-reduced” graphene oxide induces in vitro an enhanced biomimetic mineralization of polycaprolactone electrospun meshes

Marrella

Tedeschi

Giannoni

et al. 2018

Materials Science and Engineering: C

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Section: Mrna Extraction and Gene Expression Analysissupporting

confidence: 92%

“Green-reduced” graphene oxide induces in vitro an enhanced biomimetic mineralization of polycaprolactone electrospun meshes

Marrella

Tedeschi

Giannoni

et al. 2018

Materials Science and Engineering: C

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“…This phenomenon differs from the percolation in which the particles come in contact with each other at increased concentrations 16 . It has been reported that the percolation threshold for polymer-nanoclay systems is ≈ 2 wt% and above 16,[21][22][23] while in the present work the viscosity plateau is observed even at 1 phr. Another reason that denies the phenomenon to be due to percolation is that the elastic modulus G′ does not display a plateau in the low frequency region (Figure 9).…”

Section: Resultscontrasting

confidence: 40%

Rheological Behaviour of Styrene-Free Unsaturated Polyester-Clay Nanocomposites

Rezadoust

Esfandeh

Beheshty

2013

Polymers and Polymer Composites

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The rheological behaviour of styrene-free unsaturated polyester resin-organoclay (Cloisite 15A) nanocomposites at various clay contents, prepared by melt mixing, was investigated. Styrene-free resin was used to achieve high-shear mixing and to avoid viscosity changes due to solvent evaporation. In order to compare the effects of shear- and diffusion-induced phenomena on the intercalation of nanoclay; samples were prepared at two different temperatures of 40 °C (cold-mixed) and 150 °C (hot-mixed) and tested in the range of 40-120 °C using dynamic rheometry. Complex viscosity-temperature curves for cold-mixed samples showed a decrease in viscosity with increasing temperature followed by the formation of a plateau at a particular temperature, depending on the clay content. This behaviour is characteristic of systems with a network structure. The results of small angle X-ray diffraction and TEM analysis confirmed the intercalation of the nanoclay particles as well as a reduction in their thickness. TEM images revealed that the size reduction happened through bending fracture followed by shear delamination of the fractured clay layers. On this basis, a structure of the physical network was proposed to be formed by sticking several nanoclay stacks inside a polymer chain and more involvement of polymer chains with the delaminated layers' ends. A dispersion model was used to quantify and interpret the dispersion status of nanoclay particles in the resin system.

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“…Kaolin role as a filler can be abbreviated in producing a smooth surface finish, reducing cracking and shrinkage during curing, improving thermal stability, contributing to high impact strength and improving resistance to chemical action and weathering. It also helps controlling the flow properties, and can be used as a rheological modifier, in addition to its role as a functional filler to improve mechanical, electrical, and thermal properties . Kaolinite is the major mineral component of kaolin, which may usually, contains quartz and mica.…”

Section: Introductionmentioning

confidence: 99%

The influence of kaolin and calcined kaolin on SBR composite properties

Ahmed

El‐Sabbagh

2013

Polymer Composites

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Kaolin is a naturally abundant and cheap ore, which can impart various properties to rubber composites besides lowering its cost. In this work, kaolin and thermally treated kaolin (especially m‐kaolinite), which is the most active species of kaolin were added to styrene–butadiene rubber composites in different concentrations ranging between 10 and 50 phr to study their effect on SBR rheometric, physical, mechanical, and thermal properties. The main aim of this study was to state whether the activity of calcined kaolin will allow it to work as a bifunctional additive (i.e., reinforcing filler and accelerator) or an adverse one (i.e., working as an active radical breaking the polymer chains). The study revealed that SBR containing calcined kaolin performed better properties than those containing kaolin indicating that calcined kaolin worked as a bifunctional additive in SBR composites. POLYM. COMPOS., 35:570–580, 2014. © 2013 Society of Plastics Engineers

show abstract

A rheological method for selecting nano-kaolin powder as filler in SBR rubber

Cited by 17 publications

References 23 publications

“Green-reduced” graphene oxide induces in vitro an enhanced biomimetic mineralization of polycaprolactone electrospun meshes

“Green-reduced” graphene oxide induces in vitro an enhanced biomimetic mineralization of polycaprolactone electrospun meshes

Rheological Behaviour of Styrene-Free Unsaturated Polyester-Clay Nanocomposites

The influence of kaolin and calcined kaolin on SBR composite properties

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