Dyeability of Polyester and Polyamide Fabrics Employing Citric Acid

• 作者: Jorge Marcos Rosa Julia Baruque-Ramos Luciana Juncioni de Arauz Mauricio de Campos Araujo Renee Simoes Argolo do Carmo
• 来源期刊: 纺织科学与技术(英文)
• 学科: 化学
• 关键词: Citric ACID Acetic ACID Textile Industry POLYESTER POLYAMIDE DYEING
• 年，卷（期）: 2017,（3）
• 页码范围: 31-44
• 页数: 14页
• 分类号: O6

摘要

The employment of sustainable chemicals, such as citric acid, represents a possibility for the development of textile dyeing processes. This study aimed to analyze the possibility of replacement of acetic acid (commonly used in textile processing) by citric acid in polyester and polyamide 6 dyeing processes. The utilization of citric acid as leveling agent for disperse dyestuffs was also investigated. Dyeing processes in turquoise color for these fabrics were performed employing citric and acetic acid. Color differences between dyeing processes and color fastness to water were evaluated. All the color dyeing differences were not significant and there was no transference in color fastness tests (grade 5). Otherwise, the differences among polyamide dyeing processes could be related to the efficiency of citric acid solution as sequestering agent. Notwithstanding citric acid to be more expensive than acetic acid and the need of previous dissolution by stirring, it could be advantageous for some formulations.