a newly published paper discusses the synthesis of renewable isosorbide-based polyurethane acrylate resins for use in uv-curable coatings with tunable properties.
isosorbide is a starch derivative obtained by dehydrating d-sorbitol extracted from corn syrup. isosorbide is an ideal bio-based monomer that can prepare high-performance polymer materials and replace petroleum-based materials. during the research, isosorbide was used as a raw material for the preparation of polyurethane acrylate resins, with the end use being the preparation of uv-curable coatings. by adjusting the content of ε-caprolactone in the structure, the prepared coating has adjustable viscosity, thermal stability and mechanical properties, and has good hydrophilicity.
good practical application prospects
the as-prepared uv-cured coating showed a suitable pencil hardness of 3h and a high glass transition temperature (tg) of 74°c. according to the researchers, their study proposes to prepare uv-curable coatings with excellent comprehensive properties by adjusting the ratio of isosorbide and ε-caprolactone, which has good practical application prospects.
