Montmorillonite intercalated by conducting polyanilines

Kulhánková, Lenka; Tokarský, Jonáš; Peikertová, Pavlína; Kutláková, Kateřina Mamulová; Ivanek, Lubomir; Čapková, Pavla

doi:10.1016/j.jpcs.2011.11.043

Cited by 13 publications

(10 citation statements)

References 16 publications

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“…First basal reflection 001 at 2 ~ 6.5° corresponds to the basal spacing 1.31 nm, what indicates the change of interlayer structure of pristine MMT after one step composite preparation. The relatively sharp 001 profile in comparison with other PANI/clay intercalates (see for example (Kulhánková et al, 2012)) indicates that MMT was fully intercalated by PANI chains. Intercalation of PANI has significant effect on the in-plane conductivity of pellets, as will be discussed further.…”

Section: Structure Analysis and Texture Characterizationmentioning

confidence: 91%

Texture and electrical conductivity of pellets pressed from PANI and PANI/montmorillonite intercalate

Tokarský¹

2013

Acta Geodynamica Et Geomaterialia

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Polyaniline/montmorillonite (PANI/MMT) intercalate pressed into pellets using the pressure 28 MPa has been prepared in order to achieve two-dimensional conductivity which is close to pure PANI, however with improved mechanical and thermal stability (due to the presence of silicate). Structure-conductivity relationship has been investigated using X-ray diffraction analysis and diffraction patterns obtained from two perpendicular planes revealed the strong texture. The structural anisotropy led to the anisotropy in conductivity, which is much stronger for PANI/MMT than for pure PANI pellets. Anyway, the inplane conductivity is of the same order for both PANI/MMT and pure PANI pellets. The anisotropy factor, that means the ratio of in-plane conductivity and conductivity in the direction perpendicular to the pellet plane, was 328 (PANI/MMT pellet) and 6.7 (pure PANI pellet), respectively.

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Section: Structure Analysis and Texture Characterizationmentioning

confidence: 91%

Texture and electrical conductivity of pellets pressed from PANI and PANI/montmorillonite intercalate

Tokarský¹

2013

Acta Geodynamica Et Geomaterialia

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“…Most probably, they mean periodic crystalline regions that correspond to parallel and perpendicular orientations of macromolecular PAn chains [14,15,20,22,23,31] inside their amorphous array. For all samples, PAn is considered in two forms -emeraldine base (ЕB) and salt (ЕS) of phosphoric acid [14,15,20,22,29,31,36]. XRD pattern for PAn (0.1) is a bit different from others (Fig 1а) since the peak position responsible for EB in this sample is shifted to lower 2θ values and equals to 19.86°, as compared to 20.70° for other PAn samples.…”

Section: The Structure Of the Prepared Pan And G-pan Compositesmentioning

confidence: 99%

Cosolvents Impact on some Properties of the Solutions and the Films of Succinamide Chitosan

Bazunova¹,

Chernova²,

Lazdin³

et al. 2020

ChChT

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The article deals with the method of the medical purpose materials creation with the controlled physico-chemical and mechanical deformation properties on the basis of water-soluble derivative of amino polysaccharide chitosan – succinamide chitosan. The essence of the method is the macromolecules aggregation processes regulation in the initial solutions by the injection of organic cosolvents – acetone and ethanol. It has been stated that in a mixed solvent succinamide chitosan molecules are not in the form of the isolated macromolecular balls but as the macromolecules interacting (aggregated) systems. It has been proved that the presence of cosolvents decreases the polymer macromolecule links capability to interact with an enzyme and increases physico-mechanical characteristics of the film materials.

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“…In simulating the adsorption of small alcohol and thiol compounds onto Al(OH) 3 , Greathouse et al [50] showed that trends in simulated adsorption enthalpies were in excellent agreement with experiment ( Figure 2). MD simulations have also been used to study the adsorption of small organic molecules [51][52][53][54], polymers [55][56][57], (bio)organic acids [58][59][60], or entire nucleic acid strands [61][62][63][64][65] onto mineral surfaces. The latter simulations have been particularly noteworthy owing to the size and complexity of the biomolecules studied, with Thyveetil et al [61] using a high performance computing grid to simulate hydrated whole deoxyribonucleic acid (DNA) plasmids of 480 base pairs within a periodic mineral cell of 50 nm lateral dimensions, and containing 1,157,038 atoms in total.…”

Section: Simulation Studies Of Organic-mineral Structuresmentioning

confidence: 99%

Interaction of Natural Organic Matter with Layered Minerals: Recent Developments in Computational Methods at the Nanoscale

2014

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Abstract:The role of mineral surfaces in the adsorption, transport, formation, and degradation of natural organic matter (NOM) in the biosphere remains an active research area owing to the difficulties in identifying proper working models of both NOM and mineral phases present in the environment. The variety of aqueous chemistries encountered in the subsurface (e.g., oxic vs. anoxic, variable pH) further complicate this field of study. Recently, the advent of nanoscale probes such as X-ray adsorption spectroscopy and surface vibrational spectroscopy applied to study such complicated interfacial systems have enabled new insight into NOM-mineral interfaces. Additionally, due to increasing capabilities in computational chemistry, it is now possible to simulate molecular processes of NOM at multiple scales, from quantum methods for electron transfer to classical methods for folding and adsorption of macroparticles. In this review, we present recent developments in interfacial properties of NOM adsorbed on mineral surfaces from a computational point of view that is informed by recent experiments.

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Montmorillonite intercalated by conducting polyanilines

Cited by 13 publications

References 16 publications

Texture and electrical conductivity of pellets pressed from PANI and PANI/montmorillonite intercalate

Texture and electrical conductivity of pellets pressed from PANI and PANI/montmorillonite intercalate

Cosolvents Impact on some Properties of the Solutions and the Films of Succinamide Chitosan

Interaction of Natural Organic Matter with Layered Minerals: Recent Developments in Computational Methods at the Nanoscale

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