Polyvinyl chloride (PVC)-based flooring materials contain toxic phthalate plasticizers harmful for the environment. As an eco-friendly alternative to floorings based on halogenated polymers, Michigan State University researchers have prepared renewably resourced biodegradable polylactic acid (PLA) polymers, by reactive extruding PLA blends, citrate plasticizer (blend of citrate and derived vegetable oil) and a compatibilizer.
This formulation has not only significantly enhanced the impact strength and elongation of polylactide, it can also be compounded with fillers (e.g. CaCO3) and cellulosic materials (e.g. wood flour), thus making it an ideal replacement for halogenated flooring materials. PLA polymer material can be used as decorative and protective coverings on floor and walls; automotive, truck, and recreational vehicle components; reusable material-handling containers; shelving; agricultural and industrial bins and conveyors; trash and recycling receptacles; furniture and fixtures, and much more.
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