Highly efficient antifogging/antimicrobial dual-functional chitosan based coating for optical devices.
Carbohydr Polym
; 296: 119928, 2022 Nov 15.
Article
in English
| MEDLINE | ID: covidwho-1966409
ABSTRACT
The coating is frequently adopted to modify the product surface without influencing the essential features of the pristine products. Recently, significant demand has existed for efficient anti-fogging/anti-microbial surfaces in various applications to inhibit microbial growth with high transparency in high-humidity environments, especially in pandemics such as COVID-19. The current study used dual-functional chitosan (Ch) polysaccharide coating with highly hydrophilic properties to be progressively incorporated onto the glass substrates using a simple one-pot technique. Utilizing hot/cold fogging tests and plate count method, the dual-functional Ch/SiO2(3) layer possesses excellent antifogging performance and anti-microbial activity. The hydrogen bonds and electrostatic attractions formed between MSN and Ch result in a higher bound water ratio, as confirmed by the low field nuclear magnetic resonance (LF-NMR). Therefore, based on the chitosan/silica layer, 95 % is the minimum proportion of bound water necessary in the final layer structure to completely inhibit microbial and fogging activities.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Chitosan
/
Optical Devices
/
COVID-19
/
Anti-Infective Agents
Limits:
Humans
Language:
English
Journal:
Carbohydr Polym
Year:
2022
Document Type:
Article
Affiliation country:
J.carbpol.2022.119928
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