Effect of thermal conductivity and heat transfer on crystallization, structure, and morphology of polypropylene containing different fillers

Radhakrishnan, S.; Sonawane, Pradip S.; Pawaskar, N.R

doi:10.1002/app.20462

Cited by 32 publications

(19 citation statements)

References 14 publications

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“…It is known that the crystal structure of the matrix has a key role in determining the properties of polymer-based composites (Tchmutin et al 2003;Radhakrishnan et al 2004). The XRD characterizations of nano-ATO (curve a), the pure PAN (curve d) and the PAN/ATO nanocomposites with 4 and 8 wt% of nano-ATO contents (curves b and c) were conducted (see figure 6).…”

Section: Wide-angle X-ray Diffraction Studymentioning

confidence: 99%

Characterization of PAN/ATO nanocomposites prepared by solution blending

Pan

Zou

2008

Bull Mater Sci

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Conducting nanocomposites of polyacrylonitrile (PAN) and antimony-doped tin oxide (ATO) were prepared by solution blending. Electrical properties of the nanocomposites were characterized by means of electrical conductivity measurements and the phase structures were investigated via scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analyses (TGA) and dynamical mechanical analysis (DMA). This study unveiled a remarkable, interpenetrating network of chainlike nano-ATO within the PAN matrix, consistent with the existence of connected conducting paths at content as low as 4 wt% of the nano-ATO. The storage modulus of the nanocomposites increased with increasing content of ATO, due to formation of immobilized layer between polymer and filler. The interactions between ATO and PAN molecules resulted in high tan δ for the PAN/ATO nanocomposites. Thermal stability of the nanocomposites was found remarkably enhanced by the incorporation of nano-ATO.

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Section: Wide-angle X-ray Diffraction Studymentioning

confidence: 99%

Characterization of PAN/ATO nanocomposites prepared by solution blending

Pan

Zou

2008

Bull Mater Sci

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“…Radhakrishnan et al [17] reported on the relationship between the thermal conductivity of different types of fillers (silica, glass fibre, mica, talc, etc.) on the preferential orientation of the PP chains.…”

Section: Morphologymentioning

confidence: 99%

Polypropylene based carbon nanotubes composites: structure and properties

et al. 2008

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Abstract:In the field of polymer nanocomposite materials, carbon nanotubes have attracted lots of research interests in the recent past for their potentialities in improving a wide range of polymer properties. We present here a comprehensive study on polypropylene/carbon nanotube composites evaluating the morphology as well as the thermal behaviour of the prepared systems. Pristine as well as -COOH functionalised carbon nanotubes were taken into account and melt mixed at different weight fractions with PP; the crystallisation characteristics of the material were evaluated by means of DSC and XRD and the thermal behaviour was assessed through TGA analyses. The nanotubes appear to affect significantly the properties of the matrix in a way notably dependent on the functionalization and on the filler amount.

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“…19 Thermal properties have been improved by tens of degrees Celsius with the inclusion of low volume fractions of nanoparticles. [19][20][21][22][23][24] Given these multifunctional characteristics as well as improved mechanical properties, polymer nanocomposites have many existing and potential applications in the aerospace, automobile, and electronics industries.…”

Section: Introductionmentioning

confidence: 99%

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

Ramanathan

Stankovich

Dikin

et al. 2007

J Polym Sci B Polym Phys

238

168

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Mechanical, thermal, and electrical properties of graphite/PMMA composites have been evaluated as functions of particle size and dispersion of the graphitic nanofiller components via the use of three different graphitic nanofillers: ''as received graphite'' (ARG), ''expanded graphite,'' (EG) and ''graphite nanoplatelets'' (GNPs) EG, a graphitic materials with much lower density than ARG, was prepared from ARG flakes via an acid intercalation and thermal expansion. Subsequent sonication of EG in a liquid yielded GNPs as thin stacks of graphitic platelets with thicknesses of $10 nm. Solution-based processing was used to prepare PMMA composites with these three fillers. Dynamic mechanical analysis, thermal analysis, and electrical impedance measurements were carried out on the resulting composites, demonstrating that reduced particle size, high surface area, and increased surface roughness can significantly alter the graphite/polymer interface and enhance the mechanical, thermal, and electrical properties of the polymer matrix.

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Effect of thermal conductivity and heat transfer on crystallization, structure, and morphology of polypropylene containing different fillers

Cited by 32 publications

References 14 publications

Characterization of PAN/ATO nanocomposites prepared by solution blending

Characterization of PAN/ATO nanocomposites prepared by solution blending

Polypropylene based carbon nanotubes composites: structure and properties

Graphitic nanofillers in PMMA nanocomposites—An investigation of particle size and dispersion and their influence on nanocomposite properties

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