BIODEGRADABLE REFLECTIVE MULTILAYER POLYMERIC BODY

摘要

PURPOSE: A biodegradable multilayered polymer reflector is provided to obtain the superior biodegradation rate and the superior optical property capable of reflecting wavelengths in a visible light area or infrared area. CONSTITUTION: A first resin layer includes polylactic acid. A second resin layer includes polyolefin or aromatic polyester. The first resin layer and the second resin layer are alternately stacked to form biodegradable multilayered polymer reflector. The refractive index difference between the first resin layer and the second resin layer is more than or equal to 0.2 at 632.8nm. The average thickness of respective resin layer is between 30 and 300nm. The biodegradation rate of the resin layers, which is measured for 180 days based on KS M3100-1, is more than or equal to 40%.