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Synthesis and Application of Benzotriazole UV Absorbers to Improve the UV Resistance of Polyester Fabrics

Authors
  • Li, Chunli1
  • Ma, Wei1
  • Ren, Xuehong1
  • 1 Jiangnan University, Wuxi, Jiangsu, 214122, China , Wuxi, Jiangsu (China)
Type
Published Article
Journal
Fibers and Polymers
Publisher
The Korean Fiber Society
Publication Date
Nov 01, 2019
Volume
20
Issue
11
Pages
2289–2296
Identifiers
DOI: 10.1007/s12221-019-8722-5
Source
Springer Nature
Keywords
License
Yellow

Abstract

In this study, 2-(2-hydroxy-4-acryloyl)-2H-benzotriazole (BTHA), a benzotriazole ultraviolet absorber monomer, was synthesized from 2-(2,4-dihydroxyphenyl)-benzotriazole (BTDP) and acryloyl chloride. The synthesized BTHA was characterized by 1H-NMR, FTIR, and ultraviolet spectroscopy, and grafted onto polyester fabrics by the traditional pad-dry-cure (PDC) process. The effects of monomer concentration and initiator concentration on the UPF values of the grafted PET fabrics were studied. The grafted fabrics were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). The breaking strength of the grafted PET fabrics was comparable with the original PET fabrics in warp and weft directions. The UV protection factors improved significantly after grafting. The modified PET fabrics exhibited good durability to washing. The grafting of BTHA onto PET fabrics protected the damage of UV light to PET fabrics and decreased the strength loss of PET fabrics after UVA light exposure.

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