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Deposition of Porous Sorbents on Fabric Supports

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Self-Cleaning Polyester Fabric Prepared with TiOF₂ and Hexadecyltrimethoxysilane.

Euigyung Jeong¹, Heeju Woo¹, Yejin Moon¹

¹Department of Textile System Engineering, Kyungpook National University, Daegu 41566, Korea.

|February 3, 2021

Summary

New self-cleaning polyester fabrics treated with titanium oxyfluoride (TiOF2) and hexadecyltrimethoxysilane (HDS) exhibit enhanced photocatalytic and superhydrophobic properties, offering practical stain resistance for textiles.

Keywords:

TiOF2 organic silane photocatalyst self-cleaning fabrics superhydrophobicity

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Area of Science:

Materials Science
Surface Chemistry
Textile Engineering

Background:

Polyester (PET) fabrics often require treatments to impart self-cleaning functionalities.
Existing methods using titanium dioxide (TiO2) have limitations in achieving both photocatalytic and superhydrophobic properties simultaneously.

Purpose of the Study:

To develop novel self-cleaning polyester fabrics using TiOF2 and HDS treatment.
To evaluate the photocatalytic and superhydrophobic performance of the treated fabrics.
To assess the practical applicability of the self-cleaning treatment on dyed fabrics.

Main Methods:

Synthesis of TiOF2 via direct fluorination of TiO2 at varying temperatures.
Treatment of PET fabrics with synthesized TiOF2 and hexadecyltrimethoxysilane (HDS).
Evaluation of photocatalytic activity via methylene blue decomposition under UV and sunlight.
Assessment of superhydrophobic properties using water contact angle and roll-off angle measurements.
Testing stain resistance and self-cleaning capabilities on dyed fabrics with tomato ketchup.

Main Results:

TiOF2/HDS-treated PET fabrics demonstrated superior photocatalytic self-cleaning, achieving 98% methylene blue decomposition.
The treated fabrics exhibited enhanced superhydrophobicity with a water contact angle of 161° and a roll-off angle of 6°.
Dyed TiOF2/HDS-treated PET fabrics showed significant resistance to staining (e.g., tomato ketchup) and could self-clean within 4 hours.

Conclusions:

TiOF2/HDS treatment provides a viable method for creating self-cleaning PET fabrics with combined photocatalytic and superhydrophobic properties.
The developed treatment offers practical advantages, including effective stain removal and durability for textile applications.
This approach paves the way for advanced functional textiles with improved performance and longevity.