We recently reported a super toughened biobased PLA/NR thermoplastic elastomer prepared by dynamic vulcanization using dicumyl peroxide (DCP) as cured agent.It revealed that a continuous structure of the crosslinked NR phase was formed in the blend. The reactive melt blending involved simultaneous crosslinking of NR and interfacial reactive compatibilization between PLA and NR. However, whether the continuous structure of NR phase can be found in PLA by using other curing system? And any changes in mechanical properties of PLA/NR blendwith different cure systems? With these aims in mind, this study aims to compare effect of different curing system, namely dicumyl peroxide (DCP), sulphur (S) and paratertiary butylphenol formalde-hyde resin (2402), on the structure and properties of PLA/NR blends,and thus obtain the materials with optimized properties for future applications