Fecha de publicación: 22/12/2024 Fuente: Journal of applied polymer Lugar: RESEARCH ARTICLE Modular self-healing process initiated by low-energy energy sources.


Abstract
This work presents a versatile method for obtaining a new family of selenium-containing polyesters through polycondensation reactions, focusing on methodology of the synthesis, thermal characterization, and evaluation of potential self-healing behavior of these structures. Using diselenides as monomers, homopolymers and copolymers with self-healing behavior were synthesized in good yields and molar masses, and their structural characteristics could be modulated according to the type of monomers and their proportions. In this way, a wide range of polymers were obtained using monomers with aliphatic and aromatic structures. All the synthesized polymers were evaluated in terms of their thermal stability, which reached 200°C, and their completely amorphous structure, where the T
g could be modulated by adjusting the proportion of monomers. In addition, the self-healing potential of polymers that were able to form films and exhibited structural mobility at room temperature was qualitatively evaluated. After 12 h of exposure to visible light at a controlled temperature, the structures containing aromatic and aliphatic mixtures at a 1:1 ratio were able to regenerate almost 100% of their surface area. The results presented in this work can contribute to the development of new methodologies for obtaining selenium-containing polymers while increasing the range of possible self-healing compounds.