A Novel Elastomeric Dielectric Materials: Natural Rubber/Copper-Modified Activated Carbon

Abstract:

In this research, a new elastomeric dielectric material is created by integrating natural rubber (NR) with activated carbon derived from coconut shells that has been modified with copper (Ac-Cu). Here, The copper content, ranging from 0 to 2%, was meticulously examined on the AC surface through a reduction technique from copper (II) to copper (0), with the Ac-Cu concentration fixed at 15 parts per hundred of rubber (phr). Systematic investigations into the effects of the additive were conducted across various parameters, encompassing optimum curing time (t90), density, crosslink density, mechanical properties, morphology, and dielectric properties. Results revealed a notable influence of copper on the curing process, resulting in decreased cure time, and a corresponding decrease in crosslink density as the copper content increased. Interestingly, copper incorporation demonstrated a positive impact on mechanical properties. Dielectric property analysis further confirmed a direct effect of increasing copper content on the frequency range of 0.85 to 1.15 GHz. This work not only introduces a pioneering dielectric material but also provides crucial insights into the nuanced effects of copper modification, offering avenues for tailored material design in the realm of enhanced dielectric applications.

• Periodical: Materials Science Forum (Volume 1129)
• Pages: 11-17
• DOI: https://doi.org/10.4028/p-Id3HmC
• Online since: October 2024
• Authors: Thanathach Yingshataporn-A-Nan, Panachai Thusanaphoom, Thanadol Lardsaluk, Nattawut Moolchai, Narongrit Sosa, Wiwat Jeungthanasirigool, Nathapong Sukhawipat*
• Keywords: Activated Carbon, Dielectric Material, Elastomeric Material, Natural Rubber

References

[1] S. Hajra, A.M. Padhan, M. Sahu, P. Alagarsamy, K. Lee, H.J. Kim, Lead-free flexible Bismuth Titanate-PDMS composites: A multifunctional colossal dielectric material for hybrid piezo-triboelectric nanogenerator to sustainably power portable electronics, Nano Energy. 89 (2021) 106316.

DOI: 10.1016/j.nanoen.2021.106316

[2] A. Tsyganov, M. Vikulova, I. Zotov, I. Burmistrov, A. Gorokhovsky, N. Gorshkov, Synergistic effect of CaCu3Ti4O12 ceramic and Ti3C2Tx MXene nanoflakes on the dielectric properties of poly (vinylidene fluoride) composites, Materials Chemistry and Physics. 313 (2024) 128714.

DOI: 10.1016/j.matchemphys.2023.128714

[3] Q. He, K. Sun, Z. Shi, Y. Liu, R. Fan, Polymer dielectrics for capacitive energy storage: From theories, materials to industrial capacitors, Materials Today. 68 (2023) 298–333.

DOI: 10.1016/j.mattod.2023.07.023

[4] Y.M. Poplavko, Chapter 7 - Dielectrics, in: Y.M.B.T.-E.M. Poplavko (Ed.), Elsevier, 2019: p.287–408.

[5] G.C. Psarras, 2 - Fundamentals of Dielectric Theories, in: Z.-M.B.T.-D.P.M. for H.-D.E.S. Dang (Ed.), Plastics Design Library, William Andrew Publishing, 2018: p.11–57.

[6] N. Sukhawipat, N. Saetung, J.-F. Pilard, S. Bistac, A. Saetung, Synthesis and characterization of novel natural rubber based cationic waterborne polyurethane: Effect of emulsifier and diol class chain extender, Journal of Applied Polymer Science. 135 (2018).

DOI: 10.1002/app.45715

[7] N. Sukhawipat, N. Saetung, J.-F. Pilard, S. Bistac, A. Saetung, Effects of molecular weight of hydroxyl telechelic natural rubber on novel cationic waterborne polyurethane: A new approach to water-based adhesives for leather applications, International Journal of Adhesion and Adhesives. 99 (2020).

DOI: 10.1016/j.ijadhadh.2020.102593

[8] J. Junthip, N. Chaipalee, Y. Sangsorn, C. Maspornpat, J. Jitcharoen, S. Limrungruengrat, T. Chotchuangchutchaval, E. Martwong, N. Sukhawipat, The Use of New Waste-Based Plasticizer Made from Modified Used Palm Oil for Non-Glutinous Thermoplastic Starch Foam, Polymers. 14 (2022).

DOI: 10.3390/polym14193997

[9] C. Quan, N. Miskolczi, S. Feng, P. Grammelis, C. Wu, N. Gao, Effect of type of activating agent on properties of activated carbon prepared from digested solid waste, Journal of Environmental Management. 348 (2023) 119234.

DOI: 10.1016/j.jenvman.2023.119234

[10] D.A. Meadows, D.E. Clouse, S. Adhikari, V.A. Davis, Prediction of structural properties of activated carbons derived from lignocellulosic biomass components using mixture design of experiments, Materials Chemistry and Physics. 303 (2023) 127715.

DOI: 10.1016/j.matchemphys.2023.127715

[11] M. Zahid, H.M. Khan, M. Zeewaqar Manzoor, H. Ejaz Ahmed, T. Akhter, T. Alshahrani, M. Imran, M.A. Assiri, Optimization of structural, dielectric, and magnetic properties of nanocrystalline copper doped spinel ferrites, Materials Science and Engineering: B. 297 (2023) 116739.

DOI: 10.1016/j.mseb.2023.116739

[12] R. Priyadharsini, C. Manoharan, M. Bououdina, S. Sagadevan, M. Venkateshwarlu, S. Asath Bahadur, Impact of nickel substitution on structural, dielectric, magnetic, and electrochemical properties of copper ferrite nanostructures for energy storage devices, Journal of Colloid and Interface Science. 653 (2024) 917–929.

DOI: 10.1016/j.jcis.2023.09.113

[13] H. Wang, Y. Yang, L. Yang, Optimization of dielectric loss in calcium copper titanate based on different doping modification strategies, Ceramics International. 49 (2023) 38399–38419.

DOI: 10.1016/j.ceramint.2023.09.186

[14] C. Hiranobe, G. Ribeiro, G. Barrera, E. Reis, F. Cabrera, A. Job, L. Paim, R. dos Santos, Cross-Linked Density Determination of Natural Rubber Compounds by Different Analytical Techniques, Materials Research. 24 (2021).

DOI: 10.1590/1980-5373-mr-2021-0041