writer：T.T. Li, X.Q. Liu*, Y.H. Jiang, S.Q. Ma*, J. Zhu
keywords：rosin, isosorbide, shape memory epoxy resin
source：期刊
specific source：Iranian polymer journal
Issue time：2016年

A bio-based shape memory epoxy resin was synthesized from rosin in order to achieve the sustainability of shape memory epoxy resin, and its chemical structure was determined by FTIR and 1H NMR. For comparison, a petroleum-based epoxy, diglycidyl ester of terephthalic acid (DGT) which has one benzene ring, was also synthesized. The properties including thermal and mechanical properties as well as shape memory properties of the epoxy resins cured with poly (propylene glycol)-bis (2-aminopropyl ether) (D230) were studied by differential scanning calorimeter (DSC), dynamic mechanical analysis (DMA), thermogravimetric analysis (TGA), tensile test and U-type shape memory test. The effect of the stoichiometric ratio nDGEAPA/nDGT on the properties was investigated as well. The thermal and mechanical properties including thermal stability, glass transition temperature, tensile strength and modulus of the cured epoxy systems were found to be increased with the increase of DGEAPA content and the cured neat rosin-based epoxy system exhibited the highest properties. Both the cured rosin-based epoxy and the cured DGEAPA showed great shape memory performance. Meanwhile, the rosin ring structure made the cured rosin-based epoxy systems own excellent shape recovery fixity while a bit lower shape recovery and shape recovery rate relative to the cured neat DGT system. Therefore, the rosin-based epoxy resin has a great potential in the shape memory material applications.