Fabrication of photochromic, hydrophobic, antibacterial, and ultraviolet-blocking cotton fabric using silica nanoparticles functionalized with a photochromic dye

A robust superhydrophobic organosilica sol-gel-based coating on a cotton fabric substrate was successfully fabricated via a cost-effective one-step method. The coating was prepared by modification of silica nanoparticles with siloxane having long alkyl chain that allow to reduce surface energy. The coating on cotton fabric exhibited water contact angle of 151.6°. The surface morphology was evaluated by scanning electron microscopy, and surface chemical composition was measured with X-ray photoelectron spectroscopy. Results showed the enhanced superhydrophobicity that was attributed to the synergistic effect of roughness created by the random distribution of silica nanoparticles and the low surface energy imparted of long-chain alkane siloxane. In addition, the coating also showed excellent durability against washing treatments. Even after washed for 30 times, the specimen still had a water contact angle of 130°, indicating an obvious water-repellent property. With this outstanding property, the robust superhydrophobic coating exhibited a prospective application in textiles and plastics.

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UV-Blocking Properties of Silica/Titania Hybrid Nanocomposites

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.334-335.1065 ◽

2007 ◽

Vol 334-335 ◽

pp. 1065-1068 ◽

Cited By ~ 2

Author(s):

Yi He Zhang ◽

J.H. Xin ◽

W.A. Daoud ◽

Xiang Yang Hao

Keyword(s):

Electron Microscope ◽

Scanning Electron Microscope ◽

Silica Nanoparticles ◽

Field Emission ◽

Cotton Fabric ◽

Sol Gel ◽

Hybrid Nanocomposites ◽

High Magnification ◽

Uv Blocking ◽

Scanning Electron

Silica nanoparticles and silica/titania hybrid nanocomposites were synthesized by sol-gel processes, and padded on cotton fabric. The sizes of these particles ranged from tens to hundreds of nanometers. The morphologies of nanoparticles and hybrid nanocomposites were characterized by high magnification field-emission scanning electron microscope (FESEM). The UV-blocking properties of untreated and treated fabrics with silica/titania nanocomposites were studied and discussed.

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Superhydrophobic cotton fabric coating based on a complex layer of silica nanoparticles and perfluorooctylated quaternary ammonium silane coupling agent

Applied Surface Science ◽

10.1016/j.apsusc.2006.07.086 ◽

2007 ◽

Vol 253 (7) ◽

pp. 3669-3673 ◽

Cited By ~ 209

Author(s):

Minghua Yu ◽

Guotuan Gu ◽

Wei-Dong Meng ◽

Feng-Ling Qing

Keyword(s):

Silica Nanoparticles ◽

Cotton Fabric ◽

Coupling Agent ◽

Quaternary Ammonium ◽

Silane Coupling Agent ◽

Silane Coupling

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Synthesis of Fluoro-Containing Superhydrophobic Cotton Fabric with Washing Resistant Property Using Nano-SiO2 Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.121-122.23 ◽

2010 ◽

Vol 121-122 ◽

pp. 23-26 ◽

Cited By ~ 10

Author(s):

Li Fen Hao ◽

Qiu Feng An ◽

Wei Xu ◽

Qian Jin Wang

Keyword(s):

Silica Nanoparticles ◽

Cotton Fabric ◽

Sol Gel ◽

Cotton Fabrics ◽

Water Repellent ◽

Water Contact ◽

Gel Method ◽

Sol Gel Method ◽

Washing Durability ◽

Reactive Groups

A superhydrophobic complex coating for cotton fabrics based on silica nanoparticles and new fluoroalkylsiloxane polymer was reported here. The complex thin film was prepared through sol-gel method using cotton fabrics as a substrate. Silica nanoparticles in the coating made the textile surface much rougher, and new fluoroalkylsiloxane polymer with reactive groups on the top layer of the surface lowered the surface free energy and enhanced the binding between silica nanoparticles and the fluoro-containing polymer. Textiles coated with this coating showed excellent water repellent property, and water contact angle (CA) increased from 138° on the pure fluoroalkylsiloxane polymer treated cotton fabric up to 156.5° on complex one. Moreover, this superhydrophobic complex coating possesses favorable washing durability and its CA still retain 106° after 20 times of soaping operations.

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