tThis study assesses the behaviour of pea protein isolate (PPI) as a potential candidate forthe development of biobased plastic materials processed by injection moulding. Around30–40% of glycerol as plasticizer was required to obtain good processability of PPI/GL blendsto produce bioplastics. A mixing rheometer that allows recording of torque and temperatureduring mixing and a small-scale-plunger-type injection moulding machine were used toobtain PPI/GL blends and PPI-based bioplastics, respectively. Rheological and differentialscanning calorimetry measurements were made to guide the selection of suitable conditionsfor injection and moulding. For injection, we selected a temperature relatively close to themaximum of the loss tangent, but moderate enough to avoid crosslinking effects (50◦C), andfor moulding, a high temperature (130◦C) to favour crosslinking in the mould. An increasein the PPI/GL ratio leads to an enhancement of elastic bending and tensile properties ofbioplastic specimens, as well as an increase in their ability to absorb mechanical energybefore rupturing. On the other hand, the PPI/GL specimens become less transparent. Inaddition, water uptake of these bioplastics has been found to be very high and fast.© 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.