改性剂对孔雀石绿染料棉织物可染性的影响

I. Bello, O. S. Bello, K. Adegoke
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引用次数: 8

摘要

摘要研究了改性剂对孔雀石绿(MG)染料棉织物上染性能的影响。采用醋酸(CH3COOH)、水合碳酸钠(Na2CO3.10H2O)、氯化钠(NaCl)、硫酸铵((NH4)2SO4)和过氧化氢(H2O2) 5种改性剂对棉织物进行改性。测定了CH3COOH、NaCl、(NH4)2SO4、Na2CO3.10H2O和H2O2在不同浓度下(分别为88.24%、80%、77.14%、65.10%和30.88%)改性前后棉织物的平衡耗量(%E)。结果还表明,染料在棉织物上的标准亲和力(-Δμθ)与平衡耗竭之间存在相关性。熵值(ΔSθ)和焓值(ΔHθ)的变化揭示了反应的可行性(自发性)和放热性。在酸性溶液(CH3COOH)中,染色温度最高(70℃),染色效率最高,达88.24%。本研究表明,用改性剂对棉织物进行改性是改善染料与织物亲和性的最佳途径之一,因为它减少了压力,减少了染色时浪费的染料量,减少了达到满意效果所需的时间,从而使棉织物染色成为一种经济有效的环保方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Modifying Agents on the Dyeability of Cotton Fabric using Malachite Green Dye
Abstract Changes in thermodynamic parameters as a result of modifying agents on dye uptake of cotton fabric using malachite green (MG) dye was investigated in this study. Five modifying agents {Acetic acid (CH3COOH), hydrated Sodium carbonate (Na2CO3.10H2O), Sodium Chloride (NaCl), Ammonium sulphate ((NH4)2SO4) and Hydrogen peroxide (H2O2)} were used on cotton fabric. The equilibrium exhaustions (%E) were determined before and after modification of the cotton fabric at different concentrations which were 88.24%, 80%, 77.14%, 65.10% and 30.88% for CH3COOH, NaCl, (NH4)2SO4, Na2CO3.10H2O and H2O2 respectively. The results also showed a correlation between the standard affinity(-Δμθ) of dye on cotton fabric and the equilibrium exhaustion. The values of entropy (ΔSθ) and enthalpy (ΔHθ) change revealed the feasibility (spontaneity) and exothermic nature of the reaction. The optimum parameters were attained in acidic solution (CH3COOH) at the highest temperature (70 °C) of dyeing as it showed the highest % efficiency of 88.24%. This work established that modification of cotton fabric with modifying agents is one of the best route to improve the affinity between dye and fabric as it reduces stress, amount of dyes wasted in dyeing, time required to achieve satisfactory results leading to a cost effective environmental friendly approach in the field of cotton dyeing.
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