Abstract Dehypon® LS45 is a non-ionic surfactant commonly used by UK-based textile conservators, however it has a very low cloud point of 20°C which can be problematic during wet cleaning. The research presented here investigated the wet cleaning detergency of an alternative surfactant, Dehypon® LS54, which has a higher cloud point of 30°C. Artificially soiled cotton and wool were washed using both surfactants and their respective detergency effects evaluated using colorimetry and visible spectrophotometry. The most effective concentration of Dehypon® LS54 for removing soils was found to be 0.3% w/v and its detergency effect was similar to Dehypon® LS45 at the same concentration. However, it should be noted that Dehypon® LS54 at 0.3% w/v has slightly higher critical micelle concentration value for washing than Dehypon® LS45. Dehypon® LS54 was also found to be more effective at removing soiling from cotton compared to Dehypon® LS45.

中文翻译：

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用于纺织品保护湿法清洁的非离子表面活性剂Dehypon®LS54的去污力评估

摘要Dehypon®LS45是一种非离子型表面活性剂，通常用于英国的纺织品储藏商，但是其浊点非常低，为20°C，这在湿法清洁时可能会出现问题。此处进行的研究调查了替代表面活性剂Dehypon®LS54的湿洗清洁力，该表面活性剂的浊点更高，为30°C。使用两种表面活性剂洗涤被人工污染的棉花和羊毛，并使用比色法和可见分光光度法评估它们各自的去污效果。发现Dehypon®LS54去除污垢的最有效浓度为0.3％w / v，在相同浓度下，其去污效果与Dehypon®LS45相似。但是，应注意的是，0.3％w / v的Dehypon®LS54的洗涤临界胶束浓度值比Dehypon®LS45略高。