The recent annual conference of the Society of Plastics Engineers featured bioplastics developments such as algae-based materials and a new polypropylene blended with wheat-straw fibers that was developed by Ford. Such bio-based feedstocks are a growing part of the petrochemical industry, but greater involvement from large resin producers is needed to reduce bioplastics costs, said Balaji Singh, a speaker at the conference. "Emotion-based sales are good, but they are not dependable," Singh said.

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