Bita Nouri, A. Khoddami, Masoud Mostajeran, Farzaneh Alihosseini
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引用次数: 0
Abstract
Ionic liquids (ILs), with their unique characteristics, are widely known as new alternatives for solvents and catalysts used in various chemical reactions. Due to their extensive range of applications and environmental compatibility, they are suitable options for treating fibrous substrates. In this regard, this paper focuses on investigating the possibility of poly (ethylene terephthalate) surface modification via imidazolium-based ILs. Surface modification was carried out under different process conditions by varying the temperature and the catalyst. The possibility of treating samples in the IL solution for the second time was also examined. Moreover, the effect of the modification on the dyeing of polyester with disperse dye without carrier at 100 °C was studied. The samples’ wettability properties were investigated through several test methods by measuring vertical wicking height, wetting time, drop contact angle, surface resistivity and absorption of methylene blue dye. The chemical and physical changes of the modified samples were also evaluated via scanning electron microscopy images, Fourier-transform infrared spectroscopy (FTIR) spectra and mechanical tests. Results demonstrate that treatment with [BMIM]Cl and [BMIM]Br induces morphological changes on the fibre surface, creating grooves and voids. FTIR analysis and Methylene blue staining test confirm the formation of hydroxyl and carboxyl groups, enhancing the fabric's hydrophilicity and dyeability. Wettability tests reveal that increased water absorption leads to reduced electrical resistivity. Mechanical tests indicate a slight reduction in tensile strength attributed to surface roughness.
离子液体(IL)以其独特的特性被广泛认为是用于各种化学反应的溶剂和催化剂的新替代品。由于其广泛的应用范围和环境兼容性,它们是处理纤维基质的合适选择。为此,本文重点研究了通过咪唑基 IL 对聚对苯二甲酸乙二醇酯进行表面改性的可能性。通过改变温度和催化剂,在不同的工艺条件下进行了表面改性。此外,还考察了在 IL 溶液中对样品进行二次处理的可能性。此外,还研究了改性对 100 °C 下无载体分散染料涤纶染色的影响。通过测量垂直吸水高度、润湿时间、液滴接触角、表面电阻率和亚甲基蓝染料吸收率,采用多种测试方法研究了样品的润湿性能。此外,还通过扫描电子显微镜图像、傅立叶变换红外光谱和机械测试评估了改性样品的化学和物理变化。结果表明,用[BMIM]Cl 和 [BMIM]Br 处理会引起纤维表面的形态变化,产生沟槽和空隙。傅立叶变换红外分析和亚甲蓝染色测试证实,羟基和羧基的形成增强了织物的亲水性和染色性。润湿性测试表明,吸水性的增加会导致电阻率的降低。机械测试表明,由于表面粗糙,拉伸强度略有降低。
期刊介绍:
Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.