Effect of water release on thermal properties of polyaniline
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F17%3A10364873" target="_blank" >RIV/00216208:11320/17:10364873 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s11696-016-0104-5" target="_blank" >http://dx.doi.org/10.1007/s11696-016-0104-5</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11696-016-0104-5" target="_blank" >10.1007/s11696-016-0104-5</a>
Alternative languages
Result language
angličtina
Original language name
Effect of water release on thermal properties of polyaniline
Original language description
Conducting polyaniline (PANI) was studied by thermal expansion measurement, thermogravimetric analysis and by electrical conductivity measurement. Relative elongation and coefficient of thermal expansion (CTE) were determined from room temperature to 60 degrees C. Various temperature profiles were used. During heating, the treatment of samples at a constant temperature higher than the room temperature, or evacuation, water was released from the samples. Water release was detected by mass and thermogravimetric analysis. Water release was connected with shrinkage of the PANI samples and apparent negative CTE in the first thermal cycle. In the following thermal cycles, it increased and reached a positive value. CTE of PANI attained values in the range of -30 x 10(-6) K-1 up to 20 x 10(-6) K-1 in dependence on water content in the sample before measurement and on experimental conditions of measurement. Irreversible shrinkage of the polymer was the largest in the first thermal cycle. Water release exhibited a strong time and temperature dependence, and it was only partially reversible. The electrical conductivity was measured by a four-point van der Pauw method. Relative electrical conductivity decreased with amounts of water release. Relative decrease of electrical conductivity reached as far as 20% after evacuation 7 h at the room temperature.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Papers
ISSN
0366-6352
e-ISSN
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Volume of the periodical
71
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
393-400
UT code for WoS article
000394523000017
EID of the result in the Scopus database
2-s2.0-85003906178