Ye, Juan published the artcileUV-Curable Polyurethane Elastomer with UV-Irradiation/Thermo Dual-Activated Self-Healability, SDS of cas: 517-23-7, the publication is Macromolecular Materials and Engineering (2022), 307(6), 2100874, database is CAplus.
Self-healable polyurethane elastomers have potential applications in many fields, however, their use is limited by single self-healing mechanism, intricate preparation process, and long curing time. Herein, a UV-irradiation/thermo dual-induced self-healing polyurethane elastomer is prepared by UV-curing two kinds of acrylates, where one includes a quadruple hydrogen bond (PU-UPy-HEA) and the other contains a disulfide bond (SS-MA). UV-curing kinetics indicate that the conversion of acrylates is significantly improved by tuning the irradiation intensity, photoinitiator dosage, and SS-MA content. A maximum conversion of 80% is achieved within 10 s under 200 mW cm-2 in the case of the 1.5 weight% photoinitiator. The tensile strength of UV-cured polyurethane elastomer is notably improved by SS-MA, whereas its elongation at break decreases. Tensile shear tests demonstrates that the bisected samples can be re-bonded when they are repaired at 100°C for 15 min, or under 200 mW cm-2 irradiation for 1 h. After that, ∼90% of shear strength is recovered and the strength is only slightly reduced after two healing cycles. Self-healing mainly relies on thermally reversible hydrogen bonding interactions and UV-induced disulfide metathesis. This UV-cured self-healable polyurethane elastomer can be used in smart coatings as well as in other fields.
Macromolecular Materials and Engineering published new progress about 517-23-7. 517-23-7 belongs to esters-buliding-blocks, auxiliary class Tetrahydrofuran,Ketone,Ester, name is 3-Acetyldihydrofuran-2(3H)-one, and the molecular formula is C10H15NS, SDS of cas: 517-23-7.
Referemce:
https://en.wikipedia.org/wiki/Ester,
Ester – an overview | ScienceDirect Topics