Synthetic process optimisation for production of switchable hydrophilicity disperse dyes

可转换亲水性分散染料生产合成工艺优化

• 批准号: 2746495
• 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-2746495
• 关键词: Synthetic; process; optimisation; production; switchable

Polyester is the world's most used textile, with approximately 61 million tonnes produced annually (i), however the dyeing polyester process produces large volumes of chemical pollution, and high water usage with over 110 L per kg of fibre produced (ii). This means there is significant interest for a new dyeing process that eliminates polluting auxiliary chemicals and has low water usage. A new class of dyes for polyester is being developed which removes the need for polluting dispersants, reduces water and energy use, whilst providing equivalent performance within commercially used polyester dyeing machinery. This technology could be revolutionary in significantly improving the sustainability of the textile dyeing industry and contributing to the development of a circular economy.Due to these possibilities, it is critical that there is rapid scaling-up of the synthesis of the novel dyes, assisting in meeting project delivery targets and raising the commercial viability of the product. The use of a continuous flow system is being targeted to achieve this, however the current synthetic processes required optimisation with respect to the rate of reaction. In order to assess the efficacy of process changes, including use of basic catalyst and increase in reaction temperature, the reaction rate is monitored by both online and offline analytical techniques. Once optimised, the reaction will be transferred to a continuous process, to allow large scale dye production required for pilot scale studies.

聚酯是世界上最常用的纺织品，每年生产约6100万吨（i），但是染色的聚酯工艺会产生大量的化学污染，高水含量高，每千克生产的纤维超过110升（II）。这意味着新的染色工艺消除了污染辅助化学物质并使用较低的用水量引起了人们的兴趣。正在开发一类新的聚酯染料，以消除对分散剂的需求，减少水和能源使用，同时在商业使用的聚酯染色机械中提供等效性能。这项技术在显着改善纺织品染色行业的可持续性并为循环经济发展做出贡献方面可能具有革命性。对于这些可能性而言，至关重要的是，必须快速扩大新颖染料的综合，有助于实现项目交付目标并提高产品的商业能力。连续流系统的使用是为了实现这一目标，但是当前的合成过程需要相对于反应速率进行优化。为了评估过程变化的疗效，包括使用基本催化剂和反应温度的升高，在线和离线分析技术都会监视反应速率。一旦优化，反应将转移到连续过程中，以允许试验量表研究所需的大规模染料产生。