E. V., Rashmi; K. P., Vijayalakshmi; Balachandran, Nisha; Mathew, Dona; Kumar K. S., Santhosh published the artcile< Soft-segment Free Polyurethanes and their Self-healable Films>, Category: esters-buliding-blocks, the main research area is polyurethane self healable film thermomech morphol property.
Introducing non-covalent interactions into polymeric chains can result in supramol. polymers with interesting properties and dynamic features. In this work, a functional polyurethane (FPU) and non-functional polyurethane (NFPU) were synthesized from phloroglucinol and hexamethylene diisocyanate monomers by tuning their stoichiometry. Both the PUs featured spherical morphol. as observed in FESEM images and exhibited surface dynamics with time. The PUs led to self-standing films but their properties are significantly different. Temperature dependent FTIR and NMR gave strong evidence for the presence of multiple H-bonding. Computational studies (B3 LYP/6-31G** level DFT method) highlighted considerable interaction for FPU than NFPU due to enhanced H-bonding between chains. The FPU was further made into self-healable film by incorporating another polyurethane (MPU) (self-healing efficiency >80%). The mechanism of self-healing lies on the gradual growth of H-bonding between FPU and MPU at ambient conditions which is corroborated with glycerol-embedded self-healing film.
Progress in Organic Coatings published new progress about Contact angle. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Category: esters-buliding-blocks.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics