Preparation and characterization of a new high quality polymer thin film from citral

Jayalekshmi, S.; Pillai, M. G. Krishna

doi:10.1016/0040-6090(84)90047-6

Cited by 16 publications

(5 citation statements)

References 9 publications

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“…The values of the exponent ‘ n ’ for PPTMP are found to be 0.79–1.04 below 10 4 Hz. The ‘ n ’ values suggest that the Debye type of loss mechanism is operative in the frequency region below 10 4 Hz …”

Section: Resultsmentioning

confidence: 99%

Alternating Current Electrical Properties of Thin Films of Plasma Polymerized 1, 1, 3, 3‐Tetramethoxypropane

Afroze

Bhuiyan

2013

Adv Polym Technol

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Plasma-polymerized 1, 1, 3, 3-tetramethoxy-propane (PPTMP) thin films are prepared by using a capacitively coupled glow discharge reactor. The dielectric constant and the alternating current (AC) electrical conductivity of the PPTMP thin films are investigated in the frequency range from 30 to 10 4 Hz, and in the temperature range from 298 to 423 K. The AC electrical conduction mechanism in the PPTMP thin films is observed to be dominated by hopping of carriers between localized states. The trend of dielectric constant is to decrease slowly with the increasing frequency. The dielectric constant is weakly dependent on temperature (T). The dielectric loss tangent, tanδ decreases slightly with a broad minimum around 10 3 Hz and again increases with increasing frequency. C

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Section: Resultsmentioning

confidence: 99%

Alternating Current Electrical Properties of Thin Films of Plasma Polymerized 1, 1, 3, 3‐Tetramethoxypropane

Afroze

Bhuiyan

2013

Adv Polym Technol

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“…above 360 K. The increase of dielectric permittivity with temperature could be related to the well-known phenomenon that the polarisation increases with temperature, which was found to be valid in a wide range of materials [25]. This is due to the effect of interfacial polarisation caused by space charges and microscopic field distortion [26]. If the applied field is increased the probability of tunneling of electrons between molecules is also increased which cause high dielectric permittivity and dielectric loss.…”

Section: Dielectric and Ac Conductivity Studiesmentioning

confidence: 86%

Investigations on the electrical and structural properties of polyaniline doped with camphor sulphonic acid

Saravanan

Mathai

Anantharaman

et al. 2006

Journal of Physics and Chemistry of Solids

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Polyaniline is chemically synthesised and doped with camphor sulphonic acid. FTIR studies carried out on these samples indicate that the aromatic rings are retained after polymerisation. The percentage of crystallinity for polyaniline doped with camphor sulphonic acid has been estimated from the X-ray diffraction studies and is around 56% with respect to polyaniline emeraldine base. The change in dielectric permittivity with respect to temperature and frequency is explained on the basis of interfacial polarisation. AC conductivity is evaluated from the observed dielectric permittivity. The values of AC and DC conductivity and activation energy are calculated. The activation energy values suggested that the hopping conduction is the prominent conduction mechanism in this system. r

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“…As the charge carriers migrate under the influence of an electric field, it is possible that they get blocked at the electrode dielectric interface, which leads to the interfacial polarization . Such distortion causes an increase in capacitance of the plasma polycyanurate thin films at low frequencies . Second, the plasma deposited polycyanurate thin films have a high concentration of radicals, and the rotation of radicals in polycyanurate thin films may result in an increase in the polarization in the low frequency region .…”

Section: Resultsmentioning

confidence: 99%

Structural analysis and dielectric property of novel conjugated polycyanurates

Zhao

Wang

et al. 2013

Polymer Engineering & Sci

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Structural characterizations reveal that the plasma polymerization of three cyanate ester monomers proceeded mainly via the opening of p-bonds of the cyanate ester functional groups and transforming them to a large p-conjugated structure, which is noticeably different from the conventional thermal or catalytic cyclotrimerization reaction of cyanate ester monomers. The dielectric properties of the resulting plasma thin films were evaluated and results show that the dielectric constant of the three polycyanurate thin films decreased with increasing frequency, while in contrast, the dielectric loss factor increased with the increasing frequency.

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Preparation and characterization of a new high quality polymer thin film from citral

Cited by 16 publications

References 9 publications

Alternating Current Electrical Properties of Thin Films of Plasma Polymerized 1, 1, 3, 3‐Tetramethoxypropane

Alternating Current Electrical Properties of Thin Films of Plasma Polymerized 1, 1, 3, 3‐Tetramethoxypropane

Investigations on the electrical and structural properties of polyaniline doped with camphor sulphonic acid

Structural analysis and dielectric property of novel conjugated polycyanurates

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