Synthesis and characterization of photoreactive silica nanoparticles for super-hydrophobic cotton fabrics application

Author:

Liu Baojiang1,Wang Lili2,Gao Yujie3,Tian Taizhou1,Min Jie1,Yao Jinlong4,Xiang Zhonglin4,Huang Changgen4,Hu Chunyan5

Affiliation:

1. Key Laboratory of Textile Science and Technology, Ministry of Education, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, PR China

2. Key Laboratory of Science & Technology of Eco-Textile, College of Materials and Textiles, Zhejiang Sci-Tech University, PR China

3. College of Material Science and Engineering, Jilin University, PR China

4. Key Laboratory for Eco-Dyeing and Finishing of Textiles of Jiangsu Province, Jiangsu Lianfa Textile Co., Ltd, PR China

5. National Engineering Research Center for Dyeing and Finishing of Textiles, College of Chemistry, Chemical Engineering & Biotechnology, Donghua University, Shanghai 201620, PR China

Abstract

In this research, a novel method was developed to improve the super-hydrophobic stability of cotton fabrics without affecting the washing ability. The cotton fabrics were treated with hybrid photoreactive silica nanoparticles (denoted as silica-N3) and hexadecyltrimethoxysilane under ultraviolet light. Silica nanoparticles were synthesized by grafting an azido group onto silica and confirmed by proton nuclear magnetic resonance, carbon-13 nuclear magnetic resonance and Fourier transform infrared spectroscopy. Untreated and treated cotton fabrics were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and thermogravimetric analysis. Wettability was investigated by water contact angle (WCA) and water shedding angle (WSA). Moreover, the super-hydrophobic durability of coated cotton fabrics was evaluated by washing tests. The results showed that the treated cotton fabrics exhibited excellent chemical stability and outstanding non-wettability with a WCA of 154.9° for a 5 µL water droplet and a WSA of 8.7° for a 15 µL water droplet. In addition, the super-hydrophobic cotton fabric showed excellent washing durability. After 30 cycles, the contact angle was still larger than 135°.

Publisher

SAGE Publications

Subject

Polymers and Plastics,Chemical Engineering (miscellaneous)

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