Bleach catalysts: more sustainable compact laundry bleaching systems and the impact on fabrics

漂白催化剂：更可持续的紧凑型洗衣漂白系统及其对织物的影响

• 批准号: 2897303
• 金额: --
• 依托单位: University of Leeds
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2897303
• 关键词: Bleach; catalysts; more; sustainable; compact

Oxidative bleaches are one of the main technology classes that deliver strong cleaning performance in powder laundry detergents. They also make up a large proportion of a typical powder detergent, delivered in the form of percarbonate and tetraacetylethylenediamine (TAED). As the laundry detergent industry transitions to Net Zero carbon footprint formulations, in line with the urgent need to maintain global warming within 1.5 degrees C, formulation strategies will shift to a reduction in the total chemistry per dose, relying more on catalytic chemistry. In the case of bleach, this will mean more focus on metal oxidation catalysts. These technologies deliver efficient cleaning in a mass-efficient fashion but can have a negative impact on fabrics. The aim of this PhD will be to deepen our understanding of catalyst impact on fabrics, providing comprehensive evaluation of the factors leading to any negative impacts (dye interactions, impact of soil, water quality, wash temperature, laundry additive usage (oxygen- or chlorine-based bleaches)). The research will take into account the change in fabric and dye landscape since metal catalysts were previously considered for use in laundry detergents in the mid-1990s.

氧化漂白剂是粉末洗衣洗涤剂中提供强大清洁性能的主要技术类别之一。它们还构成典型的粉末洗涤剂的大部分，以过碳酸盐和四乙酰基乙二胺（TAED）的形式提供。随着洗衣粉行业向净零碳足迹配方过渡，为了满足将全球变暖控制在1.5摄氏度以内的迫切需要，配方策略将转向减少每剂量的总化学成分，更多地依赖催化化学。在漂白剂的情况下，这将意味着更多地关注金属氧化催化剂。这些技术以质量效率高的方式提供有效的清洁，但可能对织物产生负面影响。该博士学位的目的是加深我们对催化剂对织物影响的理解，全面评估导致任何负面影响的因素（染料相互作用，土壤影响，水质，洗涤温度，洗衣添加剂使用（氧或氯基漂白剂））。这项研究将考虑到织物和染料景观的变化，因为金属催化剂以前曾被认为是在20世纪90年代中期用于洗衣粉。