Studies of Dielectric Characteristics of Polymer Films in a High-Frequency Electromagnetic Field

Abstract:

Establishing the relationship between the structure of solids, on the one hand, and macroscopic physical properties, on the other, makes it possible to obtain detailed information about the structure and nature of interactions in the system involved. The solution to this problem makes it possible to formulate recommendations for the creation of materials with specified properties. In this work, much attention is paid to polymer films of syndiotactic 1,2-polybutadiene (1,2-SPB). The properties of polymer films differ from the properties of bulk materials of the same chemical composition as films. The polymer (1,2-SPB) has an amorphous, irregular structure and, due to its significant irregular structure and makeup, has important electrical, physical and chemical properties. Its physical properties make this polymer promising for use in various fields of mechanical engineering, agriculture, construction, and healthcare. The paper reports the results of a study of relaxation processes by the method of thermoactivation spectroscopy of a relatively new polymer - syndiotactic 1,2-polybutadiene. The mechanisms of deformation and relaxation polarization are described and studied in detail. A technique for preparing samples and processing the experimental results of the dielectric characteristics of polymer films are described. Dielectric measurements were performed using a standard R-571 bridge. Experimental temperature dependences of dielectric constant, dielectric loss factor and loss tangent before and after exposure to a high-frequency electromagnetic field are shown. An atomic force microscopy (AFM) survey of a 1,2-SPB polymer film is presented. Particle analysis by AFM provides a unique opportunity to determine the size and shape of particles.

• Periodical: Materials Science Forum (Volume 1082)
• Pages: 146-155
• DOI: https://doi.org/10.4028/p-i7bvkx
• Online since: March 2023
• Authors: R.G. Rakhmatullina*, G.U. Yarmuhametova, A.R. Maskova
• Keywords: Atomic Force Microscopy, Dielectric Constant, Dielectric Spectra, Polymer Film, Thermoactivation Spectroscopy

References

[1] B. Fakhlman, Chemistry of new materials and nanotechnology, Tutorial. Per. from English: Scientific publication, Dolgoprudny: Intellect Publishing House, 2011, p.464.

[2] Yu.V. Trushin, Physical foundations of materials science. Second edition (revised and enlarged): textbook. Allowance, SPb.: Publishing house of the Academic University, 2015, p.356.

[3] Physical materials science: textbook for universities: In 6 volume, Ed. B.A. Kalina, Vol. 1, Solid State Physics, Moscow: MEPhI, 2007.

[4] A.M. Salakhov, Introduction to the technology of structural materials, Textbook for students of the Institute of Physics, Kazan: K (P) FU, 2014, p.149.

[5] M.B. Lachinov, General ideas about polymers, Edited by Professor V.P. Shibaev, Moscow, 2003.

[6] A.A. Tager, Physico-chemistry of polymers, Chemistry, 1978.

[7] Workshop on chemistry and physics of polymers: textbook. ed. N.I. Avvakumova, L.A. Budarin, S.M. Divgun, ed. V.F. Kurenkov, Ed. 3rd, M.: Chemistry, 1995, p.256.

[8] G.M. Bartenev, Physics and Mechanics of Polymers: Textbook. Manual for universities, M.: Higher school, 1983, p.391.

[9] A.A. Tartanov, Basics of processing polymeric materials, Part 1 and 2, Textbook for universities, Mines: YURGUES, 2001, p.72.

[10] R.G. Sayapova, etc., New elastic material: partially crystalline polymer - syndiotactic 1,2-polybutadiene, Electronic scientific journal "Petroleum engineering". 6 (2012) 495-501.

[11] I.S. Rez, Dielectrics, Main properties and applications in electronics, M.: Radio and communication, 1989, p.288.

[12] I.A. Malyshkina, Fundamentals of the method of dielectric spectroscopy, Textbook, Moscow: Faculty of Physics, Moscow State University, 2012, p.80.

[13] R.G. Rakhmatullina, Frequency and temperature dependences of the dielectric constant and the loss-angle tangent of some nematic liquid crystals, Electronic scientific journal "Petroleum engineering". 3 (2014) 207-222.

[14] R.G. Rakhmatullina, AFM research of a deformed elastomer, Petroleum engineering. Vol. 12, 2 (2014) 140-146.

[15] S.M. Usmanov, Relaxation polarization of dielectrics. Calculation of the spectra of dielectric relaxation time, M .: Science. Fizmatlit, 1996, p.144.

[16] A.R. Blythe, D. Bloor, Electrical properties of polymers, Moscow: Fizmatlit, 2008, p.376.

[17] M.L. Williams, The Temperature Dependence of Relaxation Mechanisms in Amorphous Polymers and Other Glass-forming Liquids, J. Amer. Chem. Soc. Vol. 77, 14 (1955) 3701-3707.

DOI: 10.1021/ja01619a008

[18] A.K. Jonscher, Dielectric relaxation in solids, J. Phys. D: Appl. Phys. Vol. 32 (1999) 57-70.

[19] J.P. Runt, R.J. Fitzgerald (Eds.), Dielectric spectroscopy of polymeric materials: fundamentals and applications, Washington, DC: American Chemical Society, 1997, p.461.

[20] R.G. Sayapova, Frequency and temperature dependences of dipole-segmental and dipole-group polarization in polymers and liquid crystals, Dis ... cand. phys.-mat. Sciences, Ufa: BashSU, 2012, p.126.

[21] J. Cai [and others], Crystallization behavior of syndiotactic and atactic 1,2-polybutadiene blends, Polymer International. Vol. 53 (2004) 11-27.

[22] Y. Obata, Bulk properties of syndiotactic 1,2-polybutadiene, I. Thermal and viscoelastic properties, Polymer Journal. Vol. 7, 2 (1975) 207-216.

DOI: 10.1295/polymj.7.207

[23] Y. Obata, Bulk properties of syndiotactic 1,2-polybutadiene, II Mechanical properties of uniaxially and biaxially stretched films in relation to molecular orientation, Polymer Journal. Vol. 7, 2 (1975) 217-227.

DOI: 10.1295/polymj.7.217

[24] M.I. Abdullin, Viscoelastic and rheological properties of syndiotactic 1,2-polybutadiene, Journal applied chemistry. Vol. 80, 11 (2007) 1913-1917.

[25] R.G. Rakhmatullina, Dipole-segmental process of polarization in partially crystalline polymers, Bashkir Chemical Journal. Vol. 22, 3 (2015) 45-48.

[26] A.N. Chuvyrov, Influence of ion-forming additives on the electrical properties of paraffin-containing disperse systems, Electronic journal "Petroleum Engineering". 2 (2010) 72-75.

[27] Z.H. Kuvatov, AFM - research of cholesteric liquid crystal in the glassy state, Vestnik BSU. 2 (2005) 27-29.

[28] K.L. Sorokina, A.L. Tolstikhina, Modification of atomic force microscopy for studying the electrical properties of crystals and films, Overview, Crystallography. Vol. 49, 3 (2004) 541-565.

DOI: 10.1134/1.1756648

[29] S.N. Magonov, Surface Analysis with STM and AFM: experimental and theoretical aspects of image analysis, New York, Basel, Cambridge, Tokyo: VHC. 1996, p.318.

[30] F.M. Girfanova, Investigation of phase states of thin films of liquid crystals by atomic force microscopy, Dis ... sciences, Ufa, 2008, p.122.

[31] A.L. Tolstikhina, Atomic force microscopy of crystals and films with complex surface morphology, Dis ... cand. phys.-mat. sciences, Moscow, 2013, p.333.

[32] R.G. Sayapova, others, Electrical properties of initial and deformed elastomers, Bashkir Chemical Journal, Vol. 20, 4 (2013) 54-58.

[33] A.N. Chuvyrov, Technology of obtaining new polymer modifications of syndiotactic 1,2-polybutadiene and their electrical properties, Chelyabinsk Physics and Mathematics Journal. 39(254) (2011) 35-41.

[34] R.G. Rakhmatullina, Dielectric relaxation method in polymeric materials, In the collection: Modern achievements of agrarian science: scientific works of the All-Russian (national) scientific-practical conference dedicated to the 80th anniversary of Doctor of Agricultural Sciences, Professor, Corresponding Member. RAS, honorary member of the Academy of Sciences of the Republic of Tatarstan, academician of the AIRT, three times Laureate of the State and Government Prizes in the field of science and technology, Honored Scientist of the Russian Federation, Honored Worker of Agriculture of the Republic of Tatarstan, 2020, pp.285-290

DOI: 10.17803/1994-1471.2017.82.9.219-223