Green route extraction of TPA monomer from poly cotton fibre: A sustainable recovery approach

Abstract

Poly-cotton fiber, a blend of polyester and cotton fiber, plays a significant role in the textile industry, with nearly 60% of Poly (ethylene Terephthalate) or PET being utilized for this purpose. However, the effective recovery of PET from textile waste remains a pressing concern, underscoring the importance of adopting greener methods over conventional ones. In this context, phase transfer catalysts have emerged as a promising novel approach in green chemistry. For instance, the use of Tetrabutylammonium bromides as catalysts in the alkaline hydrolysis process facilitates the separation of PET and recovery of TPA with an impressive 95% recovery rate at a relatively low temperature of 100°C. The escalating pace of industrialization coupled with evolving fashion trends has led to a substantial increase in poly-cotton waste generation. Consequently, focusing on the recovery of monomers for reuse not only addresses environmental concerns but also aligns with the fundamental principles of green chemistry, promoting sustainability within the textile sector. Thus, exploring and implementing innovative techniques like phase transfer catalysis can significantly contribute to mitigating environmental impacts while fostering efficient resource utilization in textile production.