A new biobased polyester resin was developed for thermoset composite applications. The resin is potentially inexpensive and can be produced industrially by relatively simple means. The resin consists of star‐shaped methacrylated oligomers of lactic acid (LA). LA oligomers were synthesized in a two‐step process: in the first step, oligomers of LA were polymerized by direct condensation of LA. In the second step, the oligomers were end‐functionalized by methacrylic anhydride. The resin was characterized by differential scanning calorimetry, Raman spectroscopy, NMR, rubber process analyzer, and TOF‐SIMS. Tests show that the resin can be crosslinked into a rigid network within a couple of minutes upon thermal initiation.
No takes yet. Share an insight, caveat, or question.
Åkesson et al. (2009) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: