Improvements of electromechanical properties of gelatin hydrogels by blending with nanowire polypyrrole: effects of electric field and temperature
Identifieur interne : 001E24 ( Main/Exploration ); précédent : 001E23; suivant : 001E25Improvements of electromechanical properties of gelatin hydrogels by blending with nanowire polypyrrole: effects of electric field and temperature
Auteurs : Thawatchai Tungkavet [Thaïlande] ; Nispa Seetapan [Thaïlande] ; Datchanee Pattavarakorn [Thaïlande] ; Anuvat Sirivat [Thaïlande]Source :
- Polymer International [ 0959-8103 ] ; 2012-05.
English descriptors
- Teeft :
- Charge carriers, Chemical industry, Chemical industry polym, Chulalongkorn university, Conductive, Conductive polymer, Dbsa, Dielectrophoresis, Dielectrophoresis force, Dielectrophoresis forces, Elastic force, Electrical conductivity, Electroactive, Electromechanical, Electromechanical properties, Gelatin, Gelatin hydrogel, Gelatin hydrogels, Hydrogel, Mechanical properties, Micrographs, Modulus, Nanowire, Ndbsa, Ndbsa nmonomer, Nmonomer, Polym, Polymer, Pure gelatin, Pure gelatin hydrogel, Pure gelatin hydrogels, Pyrrole, Pyrrole monomer, Sample diameter, Schematic diagram, Sensor actuat, Shear modulus, Storage modulus, Storage modulus response, Temperature range, Various concentrations, Various dbsa concentrations.
Abstract
Nanowire‐polypyrrole/gelatin hydrogels were fabricated by dispersion of nanowire‐polypyrrole into a gelatin aqueous solution followed by solvent casting. The electromechanical properties, thermal properties and deflection of pure gelatin hydrogel and nanowire‐polypyrrole/gelatin hydrogels were studied as functions of temperature, frequency and electric field strength. The 0.01%, 0.1%, 0.5%, 1% v/v nanowire‐polypyrrole/gelatin hydrogels and pure gelatin hydrogel possess storage modulus sensitivity values of 0.75, 1.04, 0.88, 0.99 and 0.46, respectively, at an electric field strength of 800 V mm−1. The effect of temperature on the electromechanical properties of the pure gelatin hydrogel and nanowire‐polypyrrole/gelatin hydrogels was investigated between 30 and 80 °C; there are three regimes for the storage modulus behaviour. In deflection testing in a cantilever fixture, the dielectrophoresis force was determined and found to increase monotonically with electric field strength. The pure gelatin hydrogel shows the highest deflection angle and dielectrophoresis force at an electric field strength of 800 V mm−1 relative to those of the nanowire‐polypyrrole/gelatin hydrogels. Copyright © 2012 Society of Chemical Industry
Nanowire‐Ppy/gelatin hydrogels were studied for the bending behavior as a function of electric field strength. The deflection distances of the hydrogels increase monotonically with increasing electric field strength.
Url:
DOI: 10.1002/pi.4149
Affiliations:
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carriers</term><term>Chemical industry</term><term>Chemical industry polym</term><term>Chulalongkorn university</term><term>Conductive</term><term>Conductive polymer</term><term>Dbsa</term><term>Dielectrophoresis</term><term>Dielectrophoresis force</term><term>Dielectrophoresis forces</term><term>Elastic force</term><term>Electrical conductivity</term><term>Electroactive</term><term>Electromechanical</term><term>Electromechanical properties</term><term>Gelatin</term><term>Gelatin hydrogel</term><term>Gelatin hydrogels</term><term>Hydrogel</term><term>Mechanical properties</term><term>Micrographs</term><term>Modulus</term><term>Nanowire</term><term>Ndbsa</term><term>Ndbsa nmonomer</term><term>Nmonomer</term><term>Polym</term><term>Polymer</term><term>Pure gelatin</term><term>Pure gelatin hydrogel</term><term>Pure gelatin hydrogels</term><term>Pyrrole</term><term>Pyrrole monomer</term><term>Sample diameter</term><term>Schematic diagram</term><term>Sensor actuat</term><term>Shear modulus</term><term>Storage modulus</term><term>Storage modulus response</term><term>Temperature range</term><term>Various concentrations</term><term>Various dbsa concentrations</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Nanowire‐polypyrrole/gelatin hydrogels were fabricated by dispersion of nanowire‐polypyrrole into a gelatin aqueous solution followed by solvent casting. The electromechanical properties, thermal properties and deflection of pure gelatin hydrogel and nanowire‐polypyrrole/gelatin hydrogels were studied as functions of temperature, frequency and electric field strength. The 0.01%, 0.1%, 0.5%, 1% v/v nanowire‐polypyrrole/gelatin hydrogels and pure gelatin hydrogel possess storage modulus sensitivity values of 0.75, 1.04, 0.88, 0.99 and 0.46, respectively, at an electric field strength of 800 V mm−1. The effect of temperature on the electromechanical properties of the pure gelatin hydrogel and nanowire‐polypyrrole/gelatin hydrogels was investigated between 30 and 80 °C; there are three regimes for the storage modulus behaviour. In deflection testing in a cantilever fixture, the dielectrophoresis force was determined and found to increase monotonically with electric field strength. The pure gelatin hydrogel shows the highest deflection angle and dielectrophoresis force at an electric field strength of 800 V mm−1 relative to those of the nanowire‐polypyrrole/gelatin hydrogels. Copyright © 2012 Society of Chemical Industry</div><div type="abstract" xml:lang="en">Nanowire‐Ppy/gelatin hydrogels were studied for the bending behavior as a function of electric field strength. The deflection distances of the hydrogels increase monotonically with increasing electric field strength.</div></front></TEI><affiliations><list><country><li>Thaïlande</li></country></list><tree><country name="Thaïlande"><noRegion><name sortKey="Tungkavet, Thawatchai" sort="Tungkavet, Thawatchai" uniqKey="Tungkavet T" first="Thawatchai" last="Tungkavet">Thawatchai Tungkavet</name></noRegion><name sortKey="Pattavarakorn, Datchanee" sort="Pattavarakorn, Datchanee" uniqKey="Pattavarakorn D" first="Datchanee" last="Pattavarakorn">Datchanee Pattavarakorn</name><name sortKey="Seetapan, Nispa" sort="Seetapan, Nispa" uniqKey="Seetapan N" first="Nispa" last="Seetapan">Nispa Seetapan</name><name sortKey="Sirivat, Anuvat" sort="Sirivat, Anuvat" uniqKey="Sirivat A" first="Anuvat" last="Sirivat">Anuvat Sirivat</name><name sortKey="Sirivat, Anuvat" sort="Sirivat, Anuvat" uniqKey="Sirivat A" first="Anuvat" last="Sirivat">Anuvat Sirivat</name><name sortKey="Sirivat, Anuvat" sort="Sirivat, Anuvat" uniqKey="Sirivat A" first="Anuvat" last="Sirivat">Anuvat Sirivat</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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