Researchers turn PVC waste into high-performance lubricants

Researchers have developed a chemical process that converts discarded polyvinyl chloride (PVC) plastic into high-performance lubricants, potentially transforming a persistent waste problem into a valuable industrial resource. The findings, published in the journal Nature on August 5, 2026, represent a collaborative effort by scientists from Virginia Tech, Texas A&M University, and the California Institute of Technology.

PVC is one of the most widely used plastics, found in construction materials, pipes, cables, medical products, and household goods. Approximately 60 million metric tons are produced globally each year, yet less than 1% is recycled. Its chlorine content and the variety of additives used in manufacturing make conventional mechanical recycling exceptionally difficult, leading most discarded PVC to be landfilled or incinerated.

The new method chemically upcycles the plastic rather than simply reprocessing it. In the process, PVC is placed in a solvent with aluminum trichloride and alpha-olefins, then heated to about 70 degrees Celsius (158 degrees Fahrenheit) for three hours. The reaction removes chlorine atoms and breaks down the long polymer chains, converting the...