3.1. Distillers’ grains

3.1.1. As biofiller in producing polymeric biocomposites

The low cost of distillers’ grains (DDG and DDGS) is a key incentive for researchers to utilize them as biobased fillers in manufacturing polymer composites. Also, addition of DDG(S) to the polymer matrix can result in improved stiffness as long as proper treatments and proc-

essing aspects are taken into account. It is less than ten years that DDGS-containing biocom­posites has been reported in the literature. In this regard, the very first produced DDGS — containing composites exhibited low mechanical properties so that the utilization of DDG(S) as a biofiller in composite materials seemed to be not worthy in the beginning. However, recent works project a better future for DDG(S)-based biocomposites.