Responsive polymers are materials that change their properties in reaction to external stimuli, such as temperature, pH, or light. These polymers can expand, contract, or alter their shape and structure, making them useful in various applications, including drug delivery systems and smart coatings. The ability of responsive polymers to adapt to their environment allows for innovative solutions in fields like biomedical engineering and materials science. Researchers are exploring their potential in creating self-healing materials and responsive textiles, which can enhance functionality and performance in everyday products.