This book is aimed at researchers, materials scientists, and polymer engineers interested in sustainable materials. It focuses on the design, fabrication, and application of polyhydroxyurethane (PHU) polymers with an emphasis on environmental responsibility. PHUs represent a promising alternative to conventional isocyanate-based polyurethanes due to their lower toxicity and reduced environmental impact. Traditional polyurethanes rely on hazardous isocyanates, which pose risks to both human health and ecosystems. A key challenge lies in developing PHU systems that deliver strong performance, can be produced at scale, and meet the mechanical and thermal requirements of advanced applications. This work explores how innovative polymer design can balance sustainability with practical functionality, addressing the need for safer, high-performance materials in modern industry.

Dr. Dinesh Kumar Chelike Scientist, Polymers and Functional Materials Department, CSIR–Indian Institute of Chemical Technology (IICT), Hyderabad Dr. Dinesh Kumar Chelike is a dedicated researcher and scientist specializing in advanced polymeric and hybrid materials. His expertise includes isocyanate-free polyurethanes for drug delivery and energy storage, as well as the development of fluorescent materials for diverse applications. Dr. Dinesh holds a Ph.D. in Chemistry from SRM Institute of Science and Technology, Chennai, and a Master's degree in Chemistry from Karunya Institute of Technology and Sciences, Coimbatore. His professional experience includes tenure at Clearsynth R&D Lab, Secunderabad, and service as an Assistant Professor at Rungta College of Engineering & Technology, Bhilai, Chhattisgarh. With an extensive publication record and several patents, Dr. Dinesh’s expertise spans polymer synthesis, design and snthesis of hybrid inorganic-organic materials and flouroscent material. In addition to his research, he is committed to science communication and education, actively running the Kanak Chemistry Tutorial YouTube channel to promote chemistry learning.

Dr. Agnivesh Kumar Sinha obtained a Master of Technology (with distinction) in Materials Science and Engineering from National Institute of Technology Trichy, in 2013. Subsequently, he worked as an assistant professor in Central College of Engineering and Management, Raipur for one year. In 2019, he was awarded PhD in Mechanical Engineering Department by National Institute of Technology Raipur. At present, he is working as Associate Professor in Mechanical Engineering Department at Rungta International Skills University, Bhilai. His research interests are polymer composites, metal matrix composites, high entropy alloys, phase change materials, statistical analysis and powder metallurgy. He has published a total of 30 articles and 670 citations as per Scopus database. He has 19 publications in International journals and 7 presentations at International conferences to his credit. He has also published 7 book chapters in edited books of International publishers. He has 5 design patents from Govt. of India (IPO, India) to his credit. He has received 2 research grants from the All India Council for Technical Education (AICTE), Govt. of India worth ₹73.04 Lakh in field of sustainable polymeric materials.