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Demand for biodegradable resins has grown rapidly in recent years, as people become increasingly aware of the need to preserve the natural environment. Conventional biodegradable resins, however, cannot be decomposed without soil containing microorganisms. The Innovation Research Institute of Teijin Ltd. has developed PET-based biodegradable and photodegradable resin. Recently, the new resins was recognized with Green Plastic Certification by the Biodegradable Plastics Society. Now that the standards for biodegradable resin have been met, Teijin will proceed with the development necessary to prepare for market launch. The new PET-based bio and photodegradable resin has a melting point higher than that of existing biodegradable resins, because the resin conatains PET unit. Also, it can be used as an even more environmentally-friendly material when combined with PET chemical recycling. The new resin is expected to supplement the physical properties of existing biodegradable resins and to broaden their applications when used with them. # Features * The new resin is biodegradable and photodegradable, and the rate of photo-degradation can be controlled. * The resin exhibits much higher thermal resistance (melting point: 205°C) and mechanical properties than commercially available biodegradable fatty series polymers. * The new resin can be manufactured directly from collected recyclable PET (bottles, films, etc.) # Expected applications Mulch film for agriculture, source material for civil engineering work, material for composting, food packaging and others * Compost: manure made from organic waste such as food waste and sewage sludge; it also refers to methods, technologies and systems for composting. # Biodegradation data Mitsui Analysis Center confirmed that 60% of the new resin is decomposed into carbon dioxide in 112 days, at a compost test pursuant to JIS6583. Figure: Results of decomposition test by burying in compost 
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