Microwave-Assisted Rapid Preparation of Nano-ZnO/Ag Composite Functionalized Polyester Nonwoven Membrane for Improving Its UV Shielding and Antibacterial Properties.

Dongfeng Shao,Qufu Wei

doi:10.3390/ma11081412

Dongfeng Shao, Qufu Wei

Open Access

https://doi.org/10.3390/ma11081412

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Abstract

The cost and efficiency of preparing ZnO/Ag composite functional polyester membrane affect their application, for which a rapid microwave-assisted method was studied for coating ZnO/Ag composite nanoparticles on polyester nonwoven. The surface morphology, crystalline structure, and surface chemistry of the uncoated and coated polyester nonwoven was investigated by X-ray diffractometer (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and thermogravimetric (TG), respectively. Washing stability, ultraviolet properties, and antibacterial properties of before and after treatment polyester nonwoven were also investigated. The results indicated that Ag/ZnO composite nanoparticles were successfully deposited on polyester nonwoven surface. The amount of silver nitrate added in reaction has an important effect on the morphology and structure of Ag/ZnO composite on the surface of polyester fiber. The washing experiment results show that the ZnO/Ag composite functional polyester nonwoven fabric prepared by this method exhibits good washing durability after 90 min of washing. The results of UV transmission analysis showed that polyester nonwoven has an obvious increase in ultraviolet resistant properties after Ag/ZnO composite coating. When 0.2 g of silver nitrate was added into 100 mL of the reaction solution, the mean ultraviolet protection factor (UPF) of the treated polyester nonwoven reached a maximum of 219.8. The antibacterial results showed that the coated nonwoven against Escherichia coli and Staphylococcus aureus was about 94.5% and 96.6%, respectively, showing very good antibacterial properties.

Highlights

Polyester nonwoven are widely used in automotive interior decoration, garment linings, medical materials, and filter materials because of their high flexibility, good thermal stability, corrosion resistance, and strong mechanical properties [1]
This indicates that the coated fabric has an antibacterial rate of 94.5% for E. coli. These results indicate that ZnO/Ag composite functional polyester nonwoven has good antibacterial properties, which are attributed to the inhibition of bacterial growth by the release of Ag+ and Zn2+ by the ZnO/Ag composite deposited on the polyester nonwoven surface, as well as by the formation of reactive oxygen species on ZnO surface [31,32]
The Ag/ZnO nanocomposite was successfully deposited on the polyester nonwoven with microwave assistance for 10 min

Summary

Introduction

Polyester nonwoven are widely used in automotive interior decoration, garment linings, medical materials, and filter materials because of their high flexibility, good thermal stability, corrosion resistance, and strong mechanical properties [1]. Some shortcomings, such as poor hygroscopicity, generates static charge, and lack of antibacterial and UV shielding properties, affect its application effect. Materials 2018, 11, 1412 used to prepare nano ZnO/Ag composite functional polyester fabric. Among these methods, magnetron sputtering requires two sputtering targets and many operational steps. It is necessary to study a simple and rapid method for preparing nano ZnO/Ag composite functional polyester nonwoven to meet the needs of industry

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Results

Conclusion