Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (07): 90-96.doi: 10.13475/j.fzxb.20180608807

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of superhydrophobic, photocatalytic and UV-blocking textiles based on SiO2/TiO2 composite aerogels

SHENG Yu1,2, XU Lihui1,2(), MENG Yun3, SHEN Yong1, WANG Liming1, PAN Hong1   

  1. 1. Fashion College, Shanghai University of Engineering Science, Shanghai 201620, China
    2. Zhejiang Key Laboratory of Clean Dyeing and Finishing Technology, Shaoxing, Zhejiang 312000, China
    3. Shenzhen Academy of Metrology & Quality Inspection, Shenzhen, Guangdong 518000, China;
  • Received:2018-06-28 Revised:2019-04-04 Online:2019-07-15 Published:2019-07-25
  • Contact: XU Lihui E-mail:xulh0915@163.com

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Abstract:

In order to prepare a new multifunctional textile, SiO2/TiO2 composite aerogel was prepared by sol-gel method, and polydimethylsiloxane (PDMS)/SiO2-TiO2 composite material was obtained by mixing PDMS and SiO2/TiO2 composite aerogel. PDMS/SiO2-TiO2 composites were applied to coat onto the cotton fabrics by dip-pad-cure process to prepare multifunctional textiles. The scanning electron microscopy, X-ray photoelectron spectroscopy, thermogravimetric analyzer, atomic force microscopy were adopted to characterize the treated fabrics, and photocatalysis, hydrophobicity and UV-blocking properties were analyzed. The surface of the cotton fabric after treatment has the micro-nano roughness structure constructed by PDMS/SiO2-TiO2 composite material. The PDMS/SiO2-TiO2 composite material is successfully coated on the surface of the finished cotton fabric. The treated cotton fabric has a water contact angle of 157.7°, the UV protection factor of 122.47, and the photocatalytic degradation ratio for methylene blue of 87.08% after 4 h illumination.

Key words: SiO2/TiO2 composite aerogel, photocatalytic, anti-ultraviolet fabric, super-hydrophobicity, cotton fabric

CLC Number: 

  • TS19

Fig.1

Thermogravimetric graph of cotton fabrics"

Fig.2

FE-SEM images of cotton fabric treated with PDMS (a) and PDMS/SiO2-TiO2 (b)"

Fig.3

3-D diagram of atomic force microscopy of cotton fabric treated with PDMS (a) and treated with PDMS/SiO2-TiO2 (b)"

Fig.4

XPS spectra of cotton fabric"

Fig.5

Hydrophobic properties of cotton fabrics. (a) Contact angle of cotton fabrics treated with SiO2/TiO2;(b) Contact angle of cotton fabrics treated with PDMS;(c) Contact angle of cotton fabrics treated with PDMS/SiO2-TiO2;(d) Rolling angle of cotton fabric treated with PDMS/SiO2-TiO2"

Fig.6

Influence of lighting time of mercury lamp (a) and soaping time (b) on hydrophobicity of treated cotton fabrics"

Fig.7

UV transmittance of untreated fabric and cotton fabric treated with PDMS/SiO2-TiO2 composite material"

Tab.1

Ultraviolet protection performance of cotton fabric"

棉织物 平均透过率/% UPF
UVA UVB
原织物 9.60 3.80 16.03
PDMS/SiO2-TiO2整理后棉织物 0.26 0.07 122.47

Fig.8

Degradation rate of cotton fabric treated by PDMS/SiO2-TiO2 for methylene blue with different ultraviolet irradiation time"

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