Direct synthesis of a polyaniline-intercalated graphite oxide nanocomposite

Xiao, Peng; Xiao, Min; Liu, Pinggui; Gong, Kecheng

doi:10.1016/s0008-6223(00)00005-1

Cited by 98 publications

(49 citation statements)

References 13 publications

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“…The thermogram of polyaniline emeraldine base form shows a weight loss of 7-8% upto 100℃, a weight loss of 22% from 100-450℃ and a weight loss of 40% from 450-800℃. Our data are found in good agreement with the data reported in literature [31][32][33], which confirms the reliability of our results. When polyaniline was mixed with polystyrene sulphonic acid in different compositions, i.e.…”

Section: Characterizationsupporting

confidence: 93%

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

Neetika¹,

Kumar²,

Tomar³

2012

IJMC

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Polyanilines are synthesized by free radical chemical oxidative polymerization of aniline & o-toluidine using ammonium persulphate as an oxidant in protonic acid medium. These polymers have been introduced into polystyrene sulphonic acid (PSSA) in 2:1, 1:1, 1:2 compositions for the preparation of composite materials. The composite samples so obtained are thermally characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction, and FTIR spectra. The incorporation of polymer in PSSA has been endorsed by FTIR analysis. TGA data reveals that the (Polyaniline/Polystyrene sulphonic acid) PANI/PSSA (2:1) and (Poly o-toluidine/Polystyrene sulphonic acid) POT/PSSA (2:1) composites show better thermal stability than their 1:1 and 1:2 counterparts. Steric hindrance of -CH 3 group present in ortho position and sulphonic acid group of PSSA affects the thermal behaviour of composites. Two-step transitions are clearly reported from the DSC thermograms of polyanilines/PSSA composites and non-reversing chemical cross-linking reaction was further confirmed by X-ray diffraction and DSC thermograms.

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Section: Characterizationsupporting

confidence: 93%

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

Neetika¹,

Kumar²,

Tomar³

2012

IJMC

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“…In material science, various approaches for the fabrication of polymer/graphite composites have been developed and applied. The common methods include polymer blending with graphite or polymers intercalation into interlayer spacing of graphite [6][7][8][9]. Nano-dispersion of expanded graphite in various polymeric matrices such as poly(methyl methacrylate), polystyrene, and poly(vinyl chloride) using in-situ polymerization has been reported [10,11].…”

Section: Introductionmentioning

confidence: 99%

Novel Mechanically Stable, Heat Resistant and Nonflammable Functionalized Polystyrene/Expanded Graphite Nanocomposites

Kausar

Ullah

Muhammad

et al. 2014

Advances in Materials Science

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This study examined effect of inclusion of expanded graphite (Exp-G) on morphology, thermal, mechanical and flame retardant properties of PS, nitro-substituted polystyrene (N-PS) and amino-functional polystyrene (A-PS). FESEM showed exfoliated sheet morphology due to intercalation of N-PS and A-PS in expanded galleries. Tensile strength of A-PS materials (31.5-56.9 MPa) was higher than PS and N-PS. 10 % weight loss of A-PS nanocomposites (482-518 °C) was higher relative to pristine polymer and other nanocomposites. Cone calorimetry results revealed that there was lowering in PHHR of A-PS nanocomposites with 0.5 wt.% filler (428 kW/m 2 ), while PS nanocomposites showed PHHR of 443 kW/m 2 .

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“…However, thus far fewer papers have been published for graphite/ polymer as compared to clay/polymer nanocomposites. Several research groups 12,16,17,47,30,50,31,32 have claimed improvements in properties of polymer composites using graphite nanofillers (EG and GNP) with an emphasis on the electrical properties. Electrical percolation was quoted for a filler concentration of about 2 wt % for EG 11,16,22,31 or ''foliated graphite,'' 33,37 FG, (Foliated graphite, FG, is a term used in some papers to indicated EG in which the worm-like structure has been broken into separated platelets) but a loading of over 5 wt % is required for natural graphite 16,34 particles of larger dimension and thickness (as shown in Table 1).…”

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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Direct synthesis of a polyaniline-intercalated graphite oxide nanocomposite

Cited by 98 publications

References 13 publications

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

Thermal Behaviour of Chemically Synthesized Polyanilines/Polystyrene Sulphonic Acid Composites

Novel Mechanically Stable, Heat Resistant and Nonflammable Functionalized Polystyrene/Expanded Graphite Nanocomposites

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

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