Recycling of Polyurethane Foams

ISBN-13: 9780323511339 / Angielski / Twarda / 2018 / 146 str.

Sabu Thomas; Ajay Vasudeo Rane; Krishnan Kanny

Opis

Polyurethane Foam (PUF) has a diverse range of applications - and is ubiquitous in packaging - but this results in a large amount of waste which requires disposal (landfill, incineration, or recycling) They have a high calorific value due to their crude oil origin, which if utilized can be integrated into the production cycle of many chemical and petrochemical industries, boosting production and reducing the environmental burdens associated with plastic waste articles accumulation. Recycling of Polyurethane Foams introduces the main degradation/depolymerization processes and pathways of polyurethane foam materials, focusing on industrial case studies and academic reviews from recent research and development projects. The book therefore can aid practitioners in understanding the basis of polymer degradation and its relationship with industrial processes that can be of substantial value to industrial complexes the world over. Furthermore, the main pathways of polymer recycling via different routes and industrial schemes are detailed. The authors cover all of the current techniques including Regrinding, Rebinding, Adhesive pressing and compression moulding of recovered PU materials and compare these with depolymerization approaches. The book also examines life cycle assessment and cost analysis associated with polyurethane foams waste management, showing the potential of the various techniques, and assisting. This book will help academics and researchers to identify and improve on current depolymerization processes, and for industry sustainability professionals it will help them to choose the appropriate approach for their own waste management systems, minimizing the costs and environmental impact of their PU-based end products.

• A comprehensive review of all polyurethane foam recycling processes, including both chemical and mechanical approaches
• Assesses the potential of each recycling process, helping industry-based practitioners to decide which approach to take - and minimize the cost and environmental impact of their end product
• Enables academics and researchers to identify and improve upon current processes of degradation and depolymerization

Recenzje

"Overall, this book offers a collection of excellent contributions covering all aspects of the life cycle of PU foams, structured in a convincing way with numerous links between the chapters. The result is an essential manual which leads both the experienced reader and the newcomer through an exciting path, unveiling the science and technology of state of the art PU production and recycling processes, shedding new light on the limits of current approaches, advances in research and future opportunities for closing the material cycle." --Detritus

Spis treści

1. Introduction to polymers 2. Polyurethane foam chemistry 3. Recycling techniques 4. Economic and environmental impact of plastic wastes, management of plastic wastes, mechanical recycling, feedstock recycling, sorting and separation of mixed plastics, future trends in plastic waste management 5. Degradation vs. Decomposition 6. Introduction to chemical depolymerization 7. Chemical depolymerization of polyurethane foam via glycolysis 8. Chemical depolymerization of polyurethane foam via hydrolysis 9. Chemical depolymerization of polyurethane foam via ammonolysis and aminolysis 10. Chemical depolymerization of polyurethane foam via combined chemolysis methods 11. Life cycle analysis of polyurethane foam wastes 12. Applications of chemically depolymerized polyurethane foam 13. Applications of mechanically grounded polyurethane foam