id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-035203-dnoc0xcv	Vaňková, Eva	Polylactic acid as a suitable material for 3D printing of protective masks in times of COVID-19 pandemic	2020-10-29		.txt	text/plain	5754	290	43	Complete decontamination of PLA surfaces from externally applied Staphylococcus epidermidis, Escherichia coli, Candida albicans and SARS-CoV-2 was achieved using all disinfectants tested, and human adenovirus was completely inactivated by sodium hypochlorite-containing disinfectant. In the present study, we have investigated FDM 3D-printed PLA structure and porosity after exposure to common chemical disinfectants including ethanol, isopropanol and a commercial disinfectant containing sodium hypochlorite, which are easily accessible. In addition, we examined the efficiency of PLA disinfection after artificial contamination with bacteria (Staphylococcus epidermidis, Escherichia coli), a yeast fungus (Candida albicans), viruses (SARS-CoV-2 and human adenovirus -HAdV) or natural contamination by wearing the masks. The effect of immersing in three chemical disinfectants (96% ethanol, 70% isopropanol and the commercial disinfectant and bleach SAVO Original, Unilever ČR s.r.o., Czech Republic containing 0.85% sodium hypochlorite diluted with water (2:9)) was tested by repeated (5 × 15 min) cycles and long-term (24 h) exposure. Effect of ethanol, isopropanol and sodium hypochlorite on disinfection of PLA material contaminated with bacteria, yeast fungus or viruses	./cache/cord-035203-dnoc0xcv.txt	./txt/cord-035203-dnoc0xcv.txt