纺织学报 ›› 2013, Vol. 34 ›› Issue (7): 74-78.

• 染整与化学品 • 上一篇    下一篇

腐植酸钠对棉织物的吸附性能

曹机良,孟春丽   

  1. 河南工程学院材料与化学工程系
  • 收稿日期:2012-07-03 修回日期:2012-12-01 出版日期:2013-07-15 发布日期:2013-07-15
  • 通讯作者: 曹机良 E-mail:caojiliang301@163.com

Absorption of sodium humate on cotton fabric

  • Received:2012-07-03 Revised:2012-12-01 Online:2013-07-15 Published:2013-07-15

摘要: 采用腐植酸钠对棉织物进行染色,研究了染色pH值、温度、氯化钠用量、浴比和腐植酸钠用量对染色织物色深值△E的影响,探讨了腐植酸钠对棉纤维的吸附动力学和热力学。研究表明,染色pH值对染色织物的色深值影响很小,随着染色温度的升高染色织物的△E值逐渐降低,氯化钠用量为0-15g/L时染色织物色深值逐渐增加,氯化钠用量高于15g/L时染色织物色深值逐渐下降直至平衡,随着染色浴比的增大染色织物的△E值逐渐降低,0-6%o.m.f的腐植酸钠用量范围内,腐植酸钠在棉纤维上具有很好的提升性能。由动力学数据可知,染色温度越高,腐植酸钠在棉纤维上的吸附速率k越快,半染时间t1/2越短,平衡吸附量C∞越低。由热力学数据可知,腐植酸钠在棉纤维上的吸附适合用Freundlich热力学吸附模型描述,其与棉纤维以氢键和范德华力结合为主。

关键词: 腐植酸钠, 棉, 色深值, 吸附, 动力学, 热力学

Abstract: Humic acid sodium were applied to dyeing of cotton fabrics. The effects of dyeing value of pH, temperature, dosage of sodium chloride, dyeing bath ratio and dosage of humic acid sodium on △E value of dyeings were analyzed. The absorption dynamics and thermodynamics performance of humic acid sodium on cotton were also investigated. It was found that dyeing pH have less effect on △E value of dyed fabrics, the △E value of dyeings was decreased with the increase in dyeing temperature and dyeing bath ratio. When the dosage of sodium chloride from 0 to 15g/L, the △E value of dyeings was increased with the increase in dosage of sodium chloride, but when the dosage of sodium chloride above 15g/L, the △E value of dyeings was decreased with the increase in dosage of sodium chloride. When the dosage of humic acid sodium from 0 to 15g/L, the building-up performance of humic acid sodium was good. From the result of dynamics, the dyeing rate k was increased with the increase in dyeing temperature, half time of dyeing t1/2 and equilibrium dyeing uptake C∞ was decreased with the increase in dyeing temperature. From the result of thermodynamics, Freundlich equation can better fitted the absorption of humic acid sodium on cotton, humic acid sodium absorption on cotton main by hydrogen bonding and Van der waals forces.

Key words: sodium humate, cotton, &Delta, E value, absorption, kinetics, thermodynamics

中图分类号: 

  • TS193.1
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