Sodium oxalate (Na2C2O4) is an excellent phosphorus-free agent, but in sodium oxalate-containing detergents with sodium dodecylbenzene sulfonate (SDBS) and sodium carboxymethyl cellulose (CMC), significant ash deposition occurs on cotton fabrics. SDBS is the main anionic surfactant in modern detergents and cotton fiber is the most commonly used textile fiber. In this study, sodium lignosulfonate (LS) was investigated for its ability to prevent redeposition in SDBS-Na2C2O4-CMC-LS formulations. The effects of LS on ash content, whiteness, optimum washing temperature, calcium oxalate morphology, zeta potential and surface tension were carefully analyzed. The results showed that the addition of LS significantly improved the prevention of ash deposits on cotton fibers. The ash content was less than 0.46% and a small amount of particles were scattered on the cotton fibers. LS showed good dispersibility but had little effect on the washing power and zeta-potential.

中文翻译：

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SDBS-Na2C2O4-CMC配方中木质素磺酸钠对棉布抗再沉积能力的影响

草酸钠（Na2C2○4) 是一种优良的无磷剂，但在含有草酸钠的十二烷基苯磺酸钠 (SDBS) 和羧甲基纤维素钠 (CMC) 的洗涤剂中，棉织物上会出现明显的灰分沉积。SDBS是现代洗涤剂中主要的阴离子表面活性剂，棉纤维是最常用的纺织纤维。在本研究中，研究了木质素磺酸钠 (LS) 防止 SDBS-Na 再沉积的能力2C2○4-CMC-LS 配方。仔细分析了LS对灰分含量、白度、最佳洗涤温度、草酸钙形态、zeta电位和表面张力的影响。结果表明，添加 LS 显着改善了棉纤维上积灰的预防效果。灰分小于0.46%，少量颗粒散布在棉纤维上。LS表现出良好的分散性，但对洗涤力和zeta电位影响不大。