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With the awakening of environmental awareness and the development of 4D printing, the availability of renewable materials for 4D printing has become increasingly important. A kind of soybean oil-based photosensitive resins were prepared to fabricate SMP parts with acrylate epoxy soybean oil/isobornyl methacrylate/nano-Fe 3 O 4  (AESO/IBOMA/nano-Fe 3 O 4 ) networks. The effects of IBOMA and nano-Fe 3 O 4  concentration on mechanical and shape memory properties were systematically studied. The polymer can achieve high curing rate and printing accuracy. Break elongation of SMPs with 40 wt% IBOMA can up to 45.3% and tensile strength of SMPs with 60 wt% IBOMA can reach 44.3 MPa. The tensile-unload test results showed that the shape fixation rate and shape recovery rate of all formulations were higher than 90%. SMPs with 5 wt% Fe 3 O 4  can be actuated by a magnetic field and complete an 82.47% shape recovery process in 40 s.

4D printing of soybean oil based shape memory polymer and its magnetic-sensitive composite via digital light processing