ELECTROSTATIC CHARGE GENERATED FROM CONTACT/SEPARATION AND SLIDING OF FOOT ON INSOLE OF POLYPROPYLENE SHOES IN HOSPITALS | ||
| Journal of the Egyptian Society of Tribology | ||
| Volume 22, Issue 2, April 2025, Pages 1-10 PDF (378.67 K) | ||
| DOI: 10.21608/jest.2025.423506 | ||
| Authors | ||
| A. S. Ali1; A. M. Al-Kabbany2, 3; W. Y. Ali2; A. K. Ameer2 | ||
| 1Mechanical Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT | ||
| 2Production Engineering and Mechanical Design Department, Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT | ||
| 3Smart Biomaterials and Bioelectronics Lab, National Taiwan University, TAIWAN. | ||
| Abstract | ||
| Electrostatic charges (ESC), generated from contact/separation and sliding of foot and insole of polypropylene (PP) shoes used by people of medical care in hospitals are discussed in the present work. ESC built up on human skin are harmful and can cause serious health problems. The harmful effect too is from the electric field generated from ESC that can influence the operation of the electronic appliances used in hospitals. It is aimed to investigate friction coefficient and ESC generated from the dry and wet sliding of bare foot as well as foot wearing cotton and polyester (PET) on insole of PP shoes. The slipperiness of foot in contact with the insole of the PP shoes influences the safe walking. Besides, generation of ESC built up on human bodies causes serious health problems. It was revealed that bare foot displayed the highest friction values followed by foot wearing cotton socks, while PET socks showed the lowest values at dry and water wet sliding. PET socks displayed very low values of friction coefficient increasing the danger of slip. Bare foot generated the highest ESC values followed by foot wearing cotton and PET socks. The experimental observations confirmed the dependency of friction coefficient on the magnitude of ESC due to the increase of the adhesion between foot and PP. It is recommended to carefully select the materials of shoe insole and socks materials. | ||
| Keywords | ||
| Friction coefficient; electrostatic charge; contact/separation; bare foot; foot wearing socks; cotton; polyester; insole; polypropylene; shoes; hospitals | ||
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