Electrical conduction in solution-grown films of commercial grade polystyrene

Kulshrestha, Y.K.; Srivastava, A. P.

doi:10.1016/0040-6090(80)90576-3

Cited by 13 publications

(2 citation statements)

References 17 publications

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“…Such localized sites can be defined in molecular terms using the difference in ionization potential as an indication of trap depth. As the dopant concentration is increased, the molecules start bridging the gap separating the two localized states and lowering the potential barrier between them thereby facilitating the transfer of charge carriers (Kulshrestha and Srivastava 1980;Sinha et al 1981). A comparison of currents of pure and Chl doped EC reveals that an increase in current is observed with doping.…”

Section: Resultsmentioning

confidence: 99%

Electrical transport in ethyl cellulose-chloranil system

Khare

Pandey

Jain³

2000

Bull Mater Sci

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The charge-transport behaviour in pure and chloranil (Chl) doped ethyl cellulose (EC) system has been studied by measuring the dependence of current on field, temperature, electrode material and dopant concentration. The role of doping molecular concentration in the polymer matrix and modification in the conduction characteristics are studied. Lowering of the activation energy due to doping was observed. The current was found to increase with an increase in the chloranil concentration. An explanation for this has been attempted on the basis of formation of molecular aggregates between chloranil molecules and ethoxy groups of ethyl cellulose. It is suggested that chloranil occupies interstitial positions between the polymer chains and assists in carrier transportation by reducing the hopping barriers. The current-voltage characteristics of different samples are analyzed using space charge limited current theory and quantitative information about the transport parameters is derived. The values of effective drift mobility and trapped charge carrier concentration which result in the build up of space charge have been calculated.

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Section: Resultsmentioning

confidence: 99%

Electrical transport in ethyl cellulose-chloranil system

Khare

Pandey

Jain³

2000

Bull Mater Sci

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“…These activation energy values is typical of electronic conduction. 17,18 Electrical conductivity-concentration dependence…”

Section: Activation Energy Measurementsmentioning

confidence: 99%

Electrical properties and transport conduction mechanism of nitrile rubber/poly(vinyl chloride) blend

Mansour

Al-Ghoury

Shalaan

et al. 2010

J of Applied Polymer Sci

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ABSTRACT:The current-voltage characteristics of acrylonitrile butadiene rubber (NBR)/poly(vinyl chloride) (PVC) blends are studied as a function of sample temperature and PVC content. These samples showed ohmic behavior up to (225 V), after this value the behavior become SCLC (space charge limited conduction). The results obtained show that the charge carriers are generated by Richardson-Schottky emission from the electrode as well as from trapped ionic impurities at high fields. The activation energy of the prepared samples was calculated by using Arrhenius equation.

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Electrical conduction in pure and doped poly(acrylamide) films

Rao

1991

Acta Polymerica

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RAO and RAO: Electrical conduction in poly(acry1amide) films Acta Polyrneriu 42 (199l) Nr. 9 465 as it was already mentioned, takes place in an alkaline medium and during it the effects of the mercerization continue to be manifested. ConclusionThe investigation of the kinetics of xanthogenation of the cellulose, mercerized at low, middle, and high temperature, shows that in all cases the xanthogenation can be described with good enough approximation by the topochemical equation of AVRAMI, KOLMOGOROV, EROFEEV. It was established that in the order of mercerization temperatures 70,20, and 105 "C the kinetic parameters of the following xanthogenation are improved. After a high-temperature mercerization the structure of the cellulose allows the quickest, the most complete, and most steady xanthogenation, which explains the high quality of the viscose solution obtained after the dissolution of the cellulose xanthogenate. Moscow: Khimya 1972.The steady state electrical conduction in solution grown poly(acry1amide) films was investigated in the temperature range 303to 450 K at different field strengths. It was found that the RICHARDSON-SCHOTTKY and POOLE-FRENKEL mechanisms operate simultaneously. In films doped with eosin and rhodamine B, respectively, the electrical conduction was attributed to the formation of charge transfer complexcs. Elektrische Leitung in reinen und dotierten Poly(acry1amid)-FilmenDie stationire elektrische Leitung in aus der Losung erhaltenen Poly(acry1amid)-Filmen wurde im Temperaturbereich von 303 bis 450 K bei unterschiedlichen Feldstarken untersucht. Es wurde festgestellt, da13 die RICHARDSON-SCHOTTKY-und POOLE-FRENKEL-MeChanismen gleichzeitig auftreten. In mit Eosin bnv. Rhodamin B dotierten Filmen wurde die elektrische Leitung der Bildung von Charge-Transfer-Komplexen zugeschrieben.

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Electrical conduction in solution-grown films of commercial grade polystyrene

Cited by 13 publications

References 17 publications

Electrical transport in ethyl cellulose-chloranil system

Electrical transport in ethyl cellulose-chloranil system

Electrical properties and transport conduction mechanism of nitrile rubber/poly(vinyl chloride) blend

Electrical conduction in pure and doped poly(acrylamide) films

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