Majeed Aqsa, Carmenini Rosario, Locatelli Erica, Sambri Letizia, Comes Franchini Mauro
Department of Industrial Chemistry "Toso Montanari", University of Bologna V. Piero Gobetti 85 40129 Bologna Italy mauro.comesfranchiniunibo.it.
RSC Adv. 2025 Jul 21;15(31):25733-25741. doi: 10.1039/d5ra02510a. eCollection 2025 Jul 15.
The dyeing of the cotton fabric with reactive dyes is the most commonly used process in textile industry. However, the extensive use of inorganic salts poses significant environment and health concerns. To address this, the recent studies has focused on modifying cotton fabric using bio-degradable resources. In this work, chitosan and dimethyl itaconate were grafted on cotton fabric through graft polymerization reaction using ammonium per sulphate as initiator. The modified cotton was characterized through FTIR, SEM and EDS techniques. Under the condition of no organic salt, the modified and non-modified cotton were dyed with C.I. reactive blue-4, C.I. reactive orange-16, and C.I. reactive black-5 under varying dye concentration, time and temperature. The colour strength properties, analysed through / values, revealed that the modified cotton showed the better / value as compared to non-modified cotton. Furthermore, a comparative analysis of colour fastness to washing and rubbing indicated that the modification did not adversely affect the colour depth.
活性染料对棉织物进行染色是纺织工业中最常用的工艺。然而，无机盐的大量使用带来了重大的环境和健康问题。为了解决这一问题，最近的研究集中在使用可生物降解资源对棉织物进行改性。在这项工作中，以过硫酸铵为引发剂，通过接枝聚合反应将壳聚糖和衣康酸二甲酯接枝到棉织物上。通过傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）和能谱分析（EDS）技术对改性棉进行了表征。在无有机盐的条件下，将改性棉和未改性棉在不同的染料浓度、时间和温度下用C.I.活性蓝-4、C.I.活性橙-16和C.I.活性黑-5进行染色。通过K/S值分析的色强度性能表明，与未改性棉相比，改性棉表现出更好的K/S值。此外，对耐洗色牢度和耐摩擦色牢度的比较分析表明，改性不会对色深产生不利影响。
