Researchers at Japan’s RIKEN Center and the University of Tokyo have developed an innovative plastic that dissolves completely in seawater within hours—without leaving harmful microplastic residues.
Laboratory tests in Wako city showed that a small piece dissolved entirely after one hour of agitation in saltwater . This material retains the durability and functionality of conventional plastics yet breaks down into benign components processable by natural bacteria, addressing long-standing concerns over ocean pollution.
The secret lies in its design: the plastic is built using “salt bridge” ionic bonds that provide strength and flexibility in regular use but quickly disintegrate in saline environments. It remains stable and recyclable on land—dissolving over approximately 200 hours in soil—but rapidly vanishes at sea.
Non-toxic and non-flammable, it emits no carbon dioxide during breakdown and shows promise for coatings that match current industrial standards . While commercialization plans are still forthcoming, this breakthrough could revolutionize single-use plastics and dramatically reduce the global threat of marine plastic pollution.
Source: Reuters
