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Journal of Thin Films, Coating Science Technology & Application Review Article

Polyurethane: Chemistry, Production, Applications, and Future Prospects—An Overview

  1. Sandeep Rai Dyne Chemicals LLP, 3312/18, Chhatral, Gujarat Industrial Development Corporation, Phase- IV, Taluka Kalol, District Gandhinagar,

Abstract

Polyurethane (PU), a class of versatile polymers, has emerged as one of the most significant materials in modern industry owing to its remarkable mechanical strength, elasticity, durability, and resistance to abrasion, chemicals, and environmental degradation. Its wide range of tunable properties has made PU indispensable across multiple sectors, including fashion, automotive, manufacturing, biomedical, coatings, and construction. This review emphasizes the diverse applications of polyurethane and explores how its unique chemistry allows for the development of tailor-made materials suited to specific performance requirements. The mechanical, physical, biological, and chemical attributes of PU can be precisely tuned by manipulating the stoichiometric ratio of polyols and isocyanates, modifying catalysts, and adopting advanced polymerization and curing processes. The review also discusses how continuous innovations in synthesis strategies—such as solvent-free processes, waterborne systems, and bio-based formulations—are enhancing both the performance and sustainability of PU materials. Advanced characterization techniques have further contributed to understanding the structure–property relationships, facilitating the design of high-performance polyurethane materials with improved thermal, acoustic, and mechanical behavior. The study also outlines the classification of PU types, including thermoplastic, thermoset, and elastomeric variants, and provides insights into their specific advantages and limitations in different application domains. Furthermore, this article highlights significant research contributions related to novel synthesis routes, nanocomposite integration, and surface modifications that expand the functional landscape of PU-based systems. Finally, attention is given to environmental aspects, focusing on recyclability, biodegradability, and the development of green alternatives derived from renewable raw materials. Through an integrated approach combining chemistry, process engineering, and sustainability, the review underscores the evolving potential of polyurethane as a material of the future for high-performance and eco-conscious industrial applications.

Keywords

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