User:Ldm1954/Sandbox/Humidity
Humidity[edit]
Generally, increased humidity leads to a decrease in the magnitude of triboelectric charging[1]. The size of this effect varies greatly depending on the contacting materials; the decrease in charging roughly ranges from up to a factor of 10 or more to very little humidity dependence.[2] On the other hand, some experiments find increased charging at moderate humidity compared to extremely dry conditions before a subsequent decrease at higher humidity.[3] The most widespread explanation is that higher humidity leads to more water adsorbed at the surface of contacting materials, leading to a higher surface conductivity.[4][5] The higher conductivity allows for greater charge recombination during contact, resulting in a smaller transfer of charge.[4][6][7] That is, if a contact generates a particular amount of charge separation, the higher surface conductivity at higher humidity may allow more of the separated charges to recombine at the interface between the two materials, resulting in less total charge separation before they separate. Another proposed explanation for humidity effects considers the case when charge transfer is observed to increase with humidity in dry conditions. Increasing humidity may lead to the formation of water bridges between contacting materials that promote the transfer of ions.[3]
- ^ Matsusaka, S.; Maruyama, H.; Matsuyama, T.; Ghadiri, M. (2010-11-15). "Triboelectric charging of powders: A review". Chemical Engineering Science. 65 (22): 5781–5807. doi:10.1016/j.ces.2010.07.005. ISSN 0009-2509.
- ^ Németh, Ernő; Albrecht, Victoria; Schubert, Gert; Simon, Frank (May 2003). "Polymer tribo-electric charging: dependence on thermodynamic surface properties and relative humidity". Journal of Electrostatics. 58 (1–2): 3–16. doi:10.1016/S0304-3886(02)00137-7.
- ^ a b Pence, S.; Novotny, V. J.; Diaz, A. F. (1994). "Effect of Surface Moisture on Contact Charge of Polymers Containing Ions". Langmuir. 10: 592–596. doi:10.1021/la00014a042.
- ^ a b Németh, Ernő; Albrecht, Victoria; Schubert, Gert; Simon, Frank (2003-05-01). "Polymer tribo-electric charging: dependence on thermodynamic surface properties and relative humidity". Journal of Electrostatics. 58 (1): 3–16. doi:10.1016/S0304-3886(02)00137-7. ISSN 0304-3886.
- ^ Awakuni, Y; Calderwood, J H (1972-05-01). "Water vapour adsorption and surface conductivity in solids". Journal of Physics D: Applied Physics. 5 (5): 1038–1045. doi:10.1088/0022-3727/5/5/323.
- ^ Lesprit, Ugo; Paillat, Thierry; Zouzou, Noureddine; Paquier, Anna; Yonger, Marc (2021-09-01). "Triboelectric charging of a glass bead impacting against polymers: Antistatic effects in glass/PU electrification in a humidity-controlled environment". Journal of Electrostatics. 113: 103605. doi:10.1016/j.elstat.2021.103605. ISSN 0304-3886.
- ^ Toth, Joseph R.; Phillips, Amber K.; Rajupet, Siddharth; Sankaran, R. Mohan; Lacks, Daniel J. (2017-09-06). "Particle-Size-Dependent Triboelectric Charging in Single-Component Granular Materials: Role of Humidity". Industrial & Engineering Chemistry Research. 56 (35): 9839–9845. doi:10.1021/acs.iecr.7b02328. ISSN 0888-5885.