Study on the ultraviolet absorbing properties of cotton fabric finished with boron and nitrogen co-doped carbon dots

IF 2.3 4区 材料科学 Q2 Chemistry
Shijie Cheng, Chenyang Wang, Hongwei Zhang, Hantao Zou, Danying Zuo
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引用次数: 2

Abstract

To improve the UV resistance of cotton fabrics, three different carbon dots doped with boron and nitrogen (BN-CDs) were prepared by a one-step hydrothermal synthesis method using citric acid, ammonium citrate and glucose as different carbon sources, and ethylenediamine and borax as nitrogen and boron sources, respectively. Three types of blended aqueous solutions (BN-CDs/WPU) with BN-CDs and water-based polyurethane were sprayed on the surface of cotton fabric, and then the cotton fabric was rolled and dried. The structure and optical properties of BN-CDs were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, ultraviolet-visible spectrophotometry, and fluorescence spectrophotometry. The structure and ultraviolet screening capability of cotton fabrics after finishing with BN-CD/WPU blend solution were characterized. Results showed that the prepared BN-CDs were graphite-like nanocrystals with an approximately 0.3-nm crystal plane spacing. All BN-CDs had rich hydroxyl groups and amine groups on the surface, which made the BN-CDs soluble in water. BN-CDs had a strong absorption peak in the ultraviolet region and emitted bright blue fluorescence independent of excitation wavelengths. Cotton fabrics finished with BN-CDs/WPU all showed a high ultraviolet protection factor (UPF), an excellent level of protection, and good washing durability. In particular, in cotton fabrics treated with BN-CDs prepared using citric acid as a carbon source, the UPF value was still as high as 50.1 even after washing 10 times, and the fabrics maintained good elasticity and morphological characteristics. Results thus showed that BN-CDs can be used as UV absorption agents for finishing cotton fabrics.

Abstract Image

硼氮共掺杂碳点整理棉织物紫外线吸收性能的研究
为了提高棉织物的抗紫外线性能,以柠檬酸、柠檬酸铵和葡萄糖为碳源,乙二胺和硼砂分别为氮源和硼源,采用一步水热合成法制备了3种不同的掺杂硼氮碳点(BN-CDs)。将BN-CDs与水性聚氨酯的3种混溶水溶液(BN-CDs/WPU)喷在棉织物表面,然后将棉织物卷干。采用傅里叶变换红外光谱、透射电子显微镜、x射线衍射、x射线光电子能谱、紫外可见分光光度法和荧光分光光度法对BN-CDs的结构和光学性质进行了表征。对BN-CD/WPU混纺液整理后的棉织物结构和紫外线屏蔽性能进行了表征。结果表明,制备的BN-CDs为石墨状纳米晶体,晶体平面间距约为0.3 nm。所有的BN-CDs表面都含有丰富的羟基和胺基,这使得BN-CDs可溶于水。BN-CDs在紫外区有较强的吸收峰,与激发波长无关,可发出明亮的蓝色荧光。BN-CDs/WPU整理后的棉织物均具有较高的紫外线防护系数(UPF)、良好的防护水平和良好的洗涤耐久性。特别是用柠檬酸为碳源制备的BN-CDs处理棉织物,即使洗涤10次,UPF值仍高达50.1,织物保持了良好的弹性和形态特征。结果表明,BN-CDs可作为紫外光吸收剂用于棉织物整理。
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来源期刊
Journal of Coatings Technology and Research
Journal of Coatings Technology and Research CHEMISTRY, APPLIED-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
4.40
自引率
8.70%
发文量
0
期刊介绍: Journal of Coatings Technology and Research (JCTR) is a forum for the exchange of research, experience, knowledge and ideas among those with a professional interest in the science, technology and manufacture of functional, protective and decorative coatings including paints, inks and related coatings and their raw materials, and similar topics.
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