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Non-fluorinated sol-gel processing of hydrophobic coating on cotton fabric

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Title Non-fluorinated sol-gel processing of hydrophobic coating on cotton fabric
 
Creator Zakerizadeh, M
Dogolsar, M Akbari
Jamshidi, Z
Haghi, A K
 
Subject Biocompatible coating
Cotton fabric
Hydrophobic coating
Silica film
Sol-gel method
 
Description 376-384
In this study, the importance of wash durability tests for providing efficient hydrophobic surfaces through nonfluorinated
sol-gel processes has been investigated. Various concentrations of methyltriethoxysilane (MTEOS) and
trimethylchlorosilane (TMCS) have been used to deposit SiO2 nanoparticles on a cotton fabric in a two-step sol-gel process.
The effects of catalyst type on the hydrophobic properties of fabric are investigated by using ammonia or hydrochloric acid
in the sol-gel procedure. Surface characteristics, such as morphology and wettability are evaluated by image processing
techniques and contact angle measurements. Air permeability, mechanical strength and wash durability tests are also
performed to investigate the physical/mechanical properties of the samples. The results show that SiO2 nanoparticles are
well dispersed on cotton fabrics with a contact angle of 149o. It is revealed that the fabric coated with 1 mL of MTEOS and
ammonia catalyst exhibits the highest breathability and strength. Moreover, the first stage of the sol-gel technique is
sufficient to provide super hydrophobicity. However, the results of the durability test indicate that sol-gel technique does not
provide suitable wash durability that should be considered in future investigations.
 
Date 2021-12-24T08:55:10Z
2021-12-24T08:55:10Z
2021-12
 
Type Article
 
Identifier 0975-1025 (Online); 0971-0426 (Print)
http://nopr.niscair.res.in/handle/123456789/58705
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJFTR Vol.46(4) [December 2021]