ChemInform Abstract: Conductive Polymers: Materials and Applications

Supaphol, Pitt; Aramwit, Pornanong; Sangsanoh, Pakakrong; Changsarn, Sutheerat; Chuangchote, Surawut; Villiers, Melgardt M. de

doi:10.1002/chin.201139263

Cited by 3 publications

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“…Thus, understanding the crystallization behavior of polymer in the presence of filler will help in optimizing the processing conditions to achieve the desired crystal morphology for specific applications. Although crystallization kinetics of PP has been well studied in the presence of different fillers, 8,[31][32][33][34][35][36][37][38] however to the best of our knowledge, no report is available on the isothermal crystallization kinetics of polypropylene random copolymer (PPCP) in the presence of MWCNTs. Since crystallization kinetics depend not only on the filler characteristics but also on the nature of matrix; therefore, it was considered of interest to investigate the crystallization kinetics of PPCP in presence of varying amounts of MWCNTs under isothermal conditions.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene random copolymer/MWCNT nanocomposites: Isothermal crystallization kinetics, structural, and morphological interpretations

Verma

Choudhary

2014

J of Applied Polymer Sci

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This article describes the crystallization process of polypropylene random copolymer (PPCP) under isothermal conditions in presence of varying amounts of multiwalled carbon nanotubes (MWCNT) ranging from 0.5 to 4.0% w/w. Increase in the crystallization temperature under dynamic conditions confirmed the nucleating behavior of MWCNTs, which was also corroborated by crystallization studies under isothermal conditions. The crystallization kinetics was analyzed using Avrami equation and the parameters such as Avrami exponent, the equilibrium melting temperature and fold surface energy for the crystallization of PPCP chains in nanocomposites were obtained from the calorimetric data in order to determine the effect of MWCNTs on these parameters. Spherulitic growth of PPCP crystals was also investigated as a function of time and MWCNT content using hot stage polarizing microscope. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41734.

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Section: Introductionmentioning

confidence: 99%

Polypropylene random copolymer/MWCNT nanocomposites: Isothermal crystallization kinetics, structural, and morphological interpretations

Verma

Choudhary

2014

J of Applied Polymer Sci

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“…where σ is the electrical conductivity value (S•cm -1 ), n is the number of electrons (cm -3 ), µ is the mobility of the charge carriers (cm 2 V -1 s -1 ), and |q| is the unit of charge of the carriers (Coulomb) [17].…”

Section: Introductionmentioning

confidence: 99%

Electrically Conductive Ultrafine Fibers of PVA-PEDOT/PSS and PVA-AgNPs by Means of Electrospinning

Pisesweerayos

Dangtip

Supaphol

et al. 2014

AMR

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This research project produced two fabricated ultrafine conductive polymeric fibers. The first fiber was fabricated from a polymer and conductive polymer solution, and the second was fabricated from a polymer and metal nanoparticle/ nanocomposite. The resulting fibers were characterized and analyzed. For all fiber samples, the ultrafine polymeric fibers were fabricated using polyvinyl alcohol (PVA). The conductive polymer used in the first fiber sample was poly (3,4-ethylenedioxythiophene)/ polystyrene sulfonate (PEDOT/PSS). The conductive nanoparticles used in the second fiber sample were silver nanoparticles (AgNPs). The ultrafine conductive polymer fibers and the ultrafine conductive nanoparticle fibers were fabricated using an electrospining process. During the fabrication process of each fiber sample, different concentrations of either PEDOT/PSS, for fiber sample one, or AgNPs, for fiber sample two, were combined in PVA solution. Using optimal conditions, ultrafine fibers were fabricated at intervals of 5 min for the creation of random fibers, and intervals of 20 min for the creation of aligned fiber mats. The resulting fibers ranged from 0.1 μm to 0.2 μm in diameter. After characterization and analysis of the conductive ultrafine polymeric fibers, using either the PVA:PEDOT/PSS compound or the PVA:AgNPs compound, both samples produced greater conductive capacities with greater concentrations of solution. For the random fiber samples, the conductive capacity was sporadic. However, the ultrafine fiber mats (PVA:AgNPs) supported a capacity from 3.64 S/cm to 10.64 S/cm, and the PVA:PEDOT/PSS ultrafine fiber mats supported a capacity from 4.49 S/cm to 7.08 S/cm.

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“…Presently, research of conductive polymers has focused on developing conductive polymeric materials that both meet the conductive requirements of technological applications and meet economical demands for profitable production. Various classes of conductive polymers include polyacetylene, polyaniline, polypyrrole, polythiophene, poly(3, 4-ethylenedioxythiophene) (PEDOT), and poly(phenylene vinylene) [6]. The following discussion describes how these polymers are fabricated into functional materials such as conductive polymeric fibers and implemented in a broad range of applications.…”

Section: Introductionmentioning

confidence: 99%

Conductive Nanocomposite Aligned Fibers of PVA-AgNPs-PEDOT/PSS

Pisesweerayos

Dangtip

Supaphol

et al. 2014

AMR

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Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanoparticles-poly (3, 4-ethylene dioxythiophene)/poly (styrene sulfonate) (PVA:AgNPs: PEDOT/ PSS) were generated as ultra-fine electrospun fibers using the aligned fiber mat and aligned single fiber techniques. SEM and TEM were used to confirm the morphology, diameter size, and fiber alignment of the ultra-fine fibers. A two-probe technique was utilized to assess the electrical conductivity of the ultrafine fibers. The highest conductivity of PVA:AgNPs, (10 %w/v:0.75 %w/v) with a fiber diameter of 0.152 μm, with voltage applied at 17.5 kV within a 20 min collection period in the electrospinning process, was 43.20 S/cm; whereas the highest conductivity of PVA:AgNPs: PEDOT/PSS, (10 %w/v:0.25 %w/v:0.084 %w/v), with a fiber diameter of 0.158 μm and voltage applied at 17.5 kV within a 45 min collection period in the electrospinning process, was 92.18 S/cm.

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ChemInform Abstract: Conductive Polymers: Materials and Applications

Cited by 3 publications

References 0 publications

Polypropylene random copolymer/MWCNT nanocomposites: Isothermal crystallization kinetics, structural, and morphological interpretations

Polypropylene random copolymer/MWCNT nanocomposites: Isothermal crystallization kinetics, structural, and morphological interpretations

Electrically Conductive Ultrafine Fibers of PVA-PEDOT/PSS and PVA-AgNPs by Means of Electrospinning

Conductive Nanocomposite Aligned Fibers of PVA-AgNPs-PEDOT/PSS

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