Absorption Efficiency Analysis of Cotton Cloth Base Mask For Reducing Transmission Rate of Covid19 using PM2.5 Methods Detection Sidik Permana1,2*, Nuri Trianti2
1Nuclear Physics and Biophysics Research Division, Department of Physics,
2Department of Nuclear Science and Engineering,
Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung
Jl. Ganesha 10, Bandung 40132, Indonesia
*Email: psidik[at]fi.itb.ac.id
Abstract
The spreading rate or transmission rate of COVID19 is very fast and now almost all country around the world is infected by this coronavirus. As a new type of coronavirus, it was identify that the structure of COVID-19 size of the virus of about 100 nm (nano-meter). The spreading droplet from coughs is between 1 meter of more to another person around him. Therefore, the important task is to make a physical distancing more than 1 meter from the sick. The transmission model of COVID-19 is different with other virus disease transmission such as through airborne or direct touch. The common transmission of COVID19 is from the spreading of the droplet through the air as well as the other media surface. The transmission of respiratory infection via droplet will have different dimensions or sizes. When the droplet size of particles in diameter are less than 5micro-m (<5micro-m), this size will be referred to as droplet nuclei and it can be the residue of dried respiratory aerosol that results from evaporation of droplet coughed or sneezed into the atmosphere or by aerosolization of infective material. Other droplet size is 5 to 10 micro-m or more, it can be referred as respiratory droplet or respiratory aerosols. One of the causes of very fast spreading transmission rate of COVID19 is coming from droplet transmission through the air which contain virus in small droplet size type. Rrecommendations that recommend airborne precautions for any situation involving the care of COVID-19 patients and consider the use of medical masks as an acceptable option in case of shortages of respirators (N95, FFP2 or FFP3). The other medical mask for general purposes in hospital or clinic is a surgical mask. A surgical mask, also known as a procedure mask, medical mask or simply as a face mask. Because of very rare and limited volume of mask for ordinary people as well as special mask for medical also becomes very limited.
