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

2010 ◽  
Vol 121-122 ◽  
pp. 23-26 ◽  
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.

scholarly journals Superhydrophobic organosilicon-based coating system by a novel ultravoilet-curable method

2017 ◽  
Vol 7 ◽  
pp. 184798041770279 ◽  
Author(s):  
Baojiang Liu ◽  
Taizhou Tian ◽  
Jinlong Yao ◽  
Changgen Huang ◽  
Wenjun Tang ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Energy ◽  
Silica Nanoparticles ◽  
Water Contact Angle ◽  
Cotton Fabric ◽  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Water Repellent ◽  
Step Method ◽  
Water Contact

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.

scholarly journals Thermal properties and water repellency of cotton fabric prepared through sol-gel method

2016 ◽  
Vol 20 (3) ◽  
pp. 863-866 ◽  
Author(s):  
Jia-Li Gu ◽  
Qiang-Hua Zhang ◽  
Yun-Bo Chen ◽  
Guo-Qiang Chen ◽  
Tie-Ling Xing
Keyword(s):  
Thermal Properties ◽  
Cotton Fabric ◽  
Sol Gel ◽  
Water Repellency ◽  
Gravimetric Analysis ◽  
Limiting Oxygen Index ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Hydrosol ◽  
Phosphorus Doped

Cotton fabrics were treated by one-step sol-gel method. The pure silica hydrosol and phosphorus-doped hydrosol were prepared with the addition of a hydrophobic hexadecyltrimethoxysilane to decrease the surface energy of cotton fabric. The thermal properties and water repellency of treated cotton fabric were characterized by thermo-gravimetric analysis, micro combustion, limiting oxygen index, and contact angle measurement. The results showed that cotton fabric treated by phosphorus-doped silica hydrosol had excellent flame retardance, and the water repellence was apparently improved with the addition of hexadecyltrimethoxysilane.

In Situ Synthesis of SiO2 Nanoparticles by Sol-Gel Method on Cotton Fabrics and Investigation of their Physical and Chemical Properties

2021 ◽  
Vol 891 ◽  
pp. 37-42
Author(s):  
Sheila Shahidi ◽  
Hakimeh Mohammadbagherloo ◽  
Seyedmohammad Elahi ◽  
Sanaz Dalalsharifi ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Flame Retardant ◽  
Water Drop ◽  
Sol Gel ◽  
Cotton Fabrics ◽  
In Situ Synthesis ◽  
Order Structure ◽  
Gel Method ◽  
Sol Gel Method ◽  
Flame Retardant Properties

In this paper, the sol-gel method was used for in-situ synthesis of SiO2 nanoparticles (NPs) on cotton fabrics with tetraethyl orthosilicate (TEOS) in the presence of acid and alkaline indicators. The samples were characterized using by (X-ray diffraction) XRD, (scanning electron Microscopy) SEM, (Inductively coupled plasma) ICP, water drop test and also the flame retardant properties were studied by char yield. The SEM images showed that the nanoparticles are spherical in shape and the acidity or alkalinity of the medium has an effect on the formation of particles. The XRD patterns showed the typical diffraction of amorphous SiO2 (Si-O short-order structure), also ICP analysis showed that by washing the fabrics, the nanoparticles are still present on the fabric, and this indicated the stability of the washing of the fabrics impregnated with the nanoparticles. By in-situ synthesis of SiO2 nanoparticles, the flame retardant properties have been improved significantly and the amount of residual char was increased and samples were observed to be hydrophilic.

scholarly journals Super High Water-Repellent Treatments of Various Kinds of Cloths Using Sol/Gel Method

2012 ◽  
Vol 68 (4) ◽  
pp. 93-97
Author(s):  
Mitsuru Mizuno ◽  
Yuri Chaya ◽  
Tsutomu Takagi ◽  
Kazumasa Hirogaki ◽  
Teruo Hori
Keyword(s):  
Sol Gel ◽  
High Water ◽  
Water Repellent ◽  
Gel Method ◽  
Sol Gel Method

Immobilization of papain on cotton fabric by sol–gel method

2007 ◽  
Vol 40 (7) ◽  
pp. 1692-1697 ◽  
Author(s):  
Feng-Yan Li ◽  
Yan-Jun Xing ◽  
Xin Ding
Keyword(s):  
Cotton Fabric ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Silica Nanoparticles Synthesized from Maize Cob using Modified Sol-Gel Method

2020 ◽  
Vol 15 (2) ◽  
pp. 22-29
Author(s):  
Jeleel Adekunle Adebisi ◽  
Johnson Olumuyiwa Agunsoye ◽  
Sefiu Adekunle Bello ◽  
M. Haris ◽  
M. Senthilkumar ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Silica Nanoparticles ◽  
Amorphous Silica ◽  
Sol Gel ◽  
Agricultural Wastes ◽  
Gel Method ◽  
Sol Gel Method ◽  
Maize Cob ◽  
Pre Treatment ◽  
Maize Cobs

Silica has found applications in many industries. Its production from agricultural wastes has been reported but with marked agglomeration of the final product. This work investigated production of silica nanoparticles from maize cob and effect of sol-gel modification with ethylene glycol on degree of agglomeration was also examined. This work also explored the effects of acid pre/post calcination treatments of the maize cob. Maize cob was treated with HCl prior to and after calcination. Using sol-gel method, silica was produced from both untreated and treated maize cobs. Ethylene glycol was also added to sodium silicate prior to precipitation of silica gel for modification of the conventional sol-gel procedure. The results showed that acid treatments affect the purity of silica nanoparticles. Ethylene glycol was observed to reduce degree of agglomeration in silica nanoparticles production from agricultural wastes. Silica nanoparticles of sizes between 5 and 50 nm were successfully synthesized. Keywords: Agricultural Wastes, Maize cob, Amorphous silica, Agglomeration, Sol-gel, Acid pre-treatment.

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