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Dielectric relaxation anomalies in polyacrylic acid and their relationship with 'critical' points of water
- Source :
- Ferroelectrics. 504:3-14
- Publication Year :
- 2016
- Publisher :
- Informa UK Limited, 2016.
-
Abstract
- The dielectric properties of polyacrylic acid were studied using dielectric spectroscopy method in the frequency and temperature ranges 0.2 Hz–2 MHz and 2–70°C (at heating), respectively. Thermogravimetric analysis and differential scanning calorimetry were also employed at 25–250°C. A linear dielectric dispersion has been observed at low frequencies. Analysis of electrical modulus showed that the main relaxation process is characterized by non-Debye relaxation time spectrum. The observed anomalies of dielectric properties (conductivity, electrical modulus, dielectric permittivity) are probably related to the presence of water in the sample.
- Subjects :
- 010302 applied physics
Thermogravimetric analysis
Materials science
Relaxation (NMR)
Polyacrylic acid
Physics::Optics
02 engineering and technology
Dielectric
Conductivity
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Electronic, Optical and Magnetic Materials
Dielectric spectroscopy
chemistry.chemical_compound
Differential scanning calorimetry
chemistry
0103 physical sciences
Composite material
0210 nano-technology
Cole–Cole equation
Subjects
Details
- ISSN :
- 15635112 and 00150193
- Volume :
- 504
- Database :
- OpenAIRE
- Journal :
- Ferroelectrics
- Accession number :
- edsair.doi...........a66a31b98d98824be077dae858c4cb34