Preparation and opto-electrical characterization of poly(ethylene oxide) based polymer blends for electrochemical applications

被引:1
作者
Samartharama, B. N. [1 ]
Nagaiah, N. [1 ]
Ambika, M. R. [2 ]
Demappa, T. [3 ]
Acharya, Swaroop K. [4 ]
机构
[1] Bangalore Univ, Dept Phys, Bengaluru, India
[2] MS Ramaiah Inst Technol, Dept Phys, Bengaluru, India
[3] Univ Mysore, Sir MV PG Ctr, Dept Polymer Sci, Mandya, India
[4] GM Inst Technol, Dept Phys, Davangere, India
关键词
Polymer blend; poly(ethylene oxide); carboxymethyl cellulose; solid polymer electrolyte; electrical conductivity; dielectric constant; ELECTRICAL-PROPERTIES; IONIC-CONDUCTIVITY; OPTICAL-ABSORPTION; COMPOSITE; MISCIBILITY; BEHAVIOR;
D O I
10.1080/1023666X.2024.2336308
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Solid polymer electrolyte blends with varied compositions of poly(ethylene oxide) (PEO)/carboxymethyl cellulose (Na-CMC) in 10/90, 50/50, and 90/10 compositions have been successfully prepared by means of the solution cast technique at room temperature. The modification of the structural, optical, and electrical properties of the prepared blend samples was studied by employing XRD, FTIR, UV-Vis, and electrical impedance spectroscopy methods. X-ray diffraction studies revealed that the crystalline nature gradually transforms into amorphous as the Na-CMC content increases in the sample. The variation of bands noticed in the Fourier transform infrared spectroscope characteristic spectrum of the blends reveals the formation of complexes between the individual polymers. The analysis of optical properties using a UV-Vis spectrometer in the wavelength range of 900-1100nm, shows a gradual decrease in the optical indirect energy band gap with an increase in Na-CMC content in the blend. The study of the electrical properties of the blend carried out in the frequency range 50 Hz-1MHz and temperature range 303K-338K, using an electrical impedance analyzer reveals that, the dielectric constant and loss decrease with the rise in frequency, exhibiting the usual behavior of the polymers. AC conductivity is found to increase with an increase in temperature. The highest value of ionic conductivity is found to be 6.06 x 10-3Scm-1 for the blend with a 10/90 composition.
引用
收藏
页码:157 / 171
页数:15
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