Electrical Resistance, Stability and Mechanical Properties of PVC Composites Containing Graphite and Semiconductor for Sensor Technologies

This study aimed to obtain a new flexible poly vinyl chloride (PVC) based composite with conductive or semiconductor properties. Additives were graphite and semiconductor zinc oxide (ZnO). A non-ionic surfactant was also firstly used to obtain a homogeneous composite. For the characterization of these new composites; humidification, electrostatic discharge (ESD), electrical resistance, thermal shock measurements, tensile test and morphological and microscopic (SEM) measurements were performed. For the light test, a “Solar simulator” with a 1000 W xenon lamp was used. The electrical resistance and tensile strength of the materials were measured at each test step. According to the data obtained, it was determined that the electrical resistance of the materials with high graphite content, without ZnO, is still stable, while the electrical resistance of the ZnO-doped materials decreases and their conductivity increases considerably in special stimuli such as light. P3G2Z (32% PVC, 60% Graphite, 8% ZnO) was greater than 3 MΩ, with a large change in conductivity after electrostatic discharge, reaching 1078.33 kΩ, with the largest difference observed. It was determined that the resistance of P2G3Z and P1G1Z composite materials under solar radiation decreased approximately 81 and 23 times, respectively. This event proves that the composites become light sensitive semiconductor. As a result, the electrical and mechanical data of flexible, sensitive, conductive and semiconductor new polymers by doping PVC with graphite and ZnO nanoparticles at different rates will make a great contribution to the sensor, actuator, management system control mechanisms, and the robots used in the automotive and defense industries.

Keywords:

PVC composite, graphite, zinc oxide conductivity, tensile strength,

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[1] R. Babinsky, “PVC additives: a global review PVC compounds account for the greatest volume of plastics additives.”, Journal of Vinyl and Additive Technology, John Wiley & Sons, Ltd,, vol. 13, pp. 1 – 4, 2007
[2] J. Yu, L. Sun, C. Ma, Y. Qiao, H. Yao, “Thermal degradation of PVC: A review,” Waste Management, vol. 48, pp. 300–314, 2016.
[3] H. Kaczmarek, J. Kowalonek, D. Ołdak, “The influence of UV-irradiation on poly(vinyl chloride) modified by iron and cobalt chlorides,” Polymer Degradation and Stability, vol. 79, no. 2, pp. 231–240, 2003.
[4] Y. zhong Bao, H. Zhi-ming, L. Shenxing, W. Zhi-xue, “Thermal stability, smoke emission and mechanical properties of poly(vinyl chloride) / hydrotalcite nanocomposites,” Polymer Degradation and Stability, vol. 93, no. 2, pp. 448–455, 2008.
[5] E. Calò, A. Greco, A. Maffezzoli, “Effects of diffusion of a naturallyderived plasticizer from soft PVC,” Polymer Degradation and Stability, vol. 96, no. 5, pp. 784–789, 2011.
[6] X. Zhang, L. Zhou, H. Pi, S. Guo, J. Fu, “Performance of layered double hydroxides intercalated by a UV stabilizer in accelerated weathering and thermal stabilization of PVC,” Polymer Degradation and Stability, vol. 102, no. 1, pp. 204–211, 2014.
[7] R. Singh, D. Pant, “Polyvinyl chloride degradation by hybrid (chemical and biological) modification,” Polymer Degradation and Stability, vol. 123, pp. 80–87, 2016.
[8] Y. T. Shieh, K. C. Hsieh, C. C. Cheng, “Carbon nanotubes stabilize poly(vinyl chloride) against thermal degradation,” Polymer Degradation and Stability, vol. 144, pp. 221–230, 2017.
[9] N. Merah, A. Bazoune, A. Fazal, Z. Khan, “Weathering degradation mechanisms of chlorinated PVC,” Int. Journal of Plastic Technology, vol. 17, no. 2, pp. 111–122, 2013.
[10] A. Kausar, S. Anwar, “Graphite FillerBased Nanocomposites with Thermoplastic Polymers: A Review,” Polymer-Plastics Technology and Engineering, vol. 57, no. 6, pp. 565– 580, 2018.
[11] A. T. Lawal, “Graphene-based nano composites and their applications. A review,” Biosensors and Bioelectronics, vol. 141, no. May, p. 111384, 2019.
[12] D. G. Papageorgiou, I. A. Kinloch, R. J. Young, “Graphene/elastomer nanocomposites,” Carbon, vol. 95, pp. 460–484, 2015.
[13] M. S. Kim, J. Yan, K. M. Kang, K. H. Joo, Y. J. Kang, S. H. Ahn, “Soundproofing ability and mechanical properties of polypropylene/exfoliated graphite nanoplatelet/carbon nanotube (PP/xGnP/CNT) composite,” International Journal of Precision Engineering and Manufacturing, vol. 14, no. 6, pp. 1087–1092, 2013.
[14] W. W. Focke, H. Muiambo, W. Mhike, H. J. Kruger, O. Ofosu, “Flexible PVC flame retarded with expandable graphite,” Polymer Degradation and Stability, vol. 100, no. 1, pp. 63–69, 2014.
[15] B. Dittrich, K. A. Wartig, D. Hofmann, R. Mülhaupt, B. Schartel, “Flame retardancy through carbon nanomaterials: Carbon black, multiwall nanotubes, expanded graphite, multilayer graphene and graphene in polypropylene,” Polymer Degradation and Stability, vol. 98, no. 8, pp. 1495– 1505, 2013.
[16] S. N. Tripathi, G. S. S. Rao, A. B. Mathur, R. Jasra, “Polyolefin/graphene nanocomposites: A review,” RSC Adv., vol. 7, no. 38, pp. 23615–23632, 2017.
[17] V. N. Gorshenev, A. N. Shchegolikhin, “Thermophysical studies of the expansion of graphite in thermoplastic polymeric compositions,” Russian Journal of Physical Chemistry B, vol. 2, no. 1, pp. 123–127, 2008.
[18] International Organization for Standardization. Road vehicles — The humidification conditioning in automotive (ISO Standard No.16750-4) Clause 5.7, 2008.
[19] International Organization for Standardization. Road vehicles — Test methods for the electrostatic standard (ISO Standard No.10605, 2008.
[20] A. G. Hadi, E. Yousif, G. A. El-Hiti, D.S. Ahmed, K. Jawad, M. H. Alotaibi, H. Hashim, "Long-Term Effect of Ultraviolet Irradiation on Poly(vinyl chloride) Films Containing Naproxen Diorganotin(IV) Complexes", Molecules, 24, 2396, 2019.
[21] B. Dindar, A. C. Güler, “Comparison of facile synthesized N doped, B doped and undoped ZnO for the photocatalytic removal of Rhodamine B,” Environmental Nanotechnology, Monitoring & Management, vol. 10, pp. 457–466, 2018.
[22] International Organization for Standardization. Road vehicles — Test methods for rapid temperature change of (ISO Standard No. 16750-4), 2008.
[23] I. Krupa, I. Chod, “Physical properties of thermoplastic / graphite composites,” European Polymer Journal, vol. 37, pp. 2159–2168, 2001.
[24] P. Vilímová, J. Tokarský, P. Peikertová, K. Mamulová Kutláková, T. Plaček, “Influence of thermal and UV treatment on the polypropylene/graphite composite,” Polymer Testing, vol. 52, pp. 46–53, 2016.
[25] R. Sengupta, M. Bhattacharya, S. Bandyopadhyay, A. K. Bhowmick, “A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites,” Progress in Polymer Science, vol. 36, no. 5, pp. 638–670, 2011.
[26] K. S. R. C. Murthy, K. Ramkumar, M. Satyam, “Electrical properties of PVCgraphite thick films,” Journal of Materials Science Letters, vol. 3, no. 9, pp. 813–816, 1984.
[27] A. M. Bagoji and S. T. Nandibewoor, “Electrocatalytic redox behavior of graphene films towards acebutolol hydrochloride determination in real samples”, The Royal Society of Chemistry, New Journal of Chemistry, 40, 3763-3772, 2016.