Degradation of Polylactic Acid (PLA)Plastic in Costa Rican Soil and Iowa State University Compost Rows1 

 -  Journal of Environmental Polymer Degradation, 7(4), p.173-177, 1999 .
<br/><br/> In this study the degradation of polylactic acid (PLA)plastic films in Costa Rican soil and in a leaf composting environment was investigated. Three types of PLA films were used: Ch-I, (PLA monolayer plastic films from Chronopol, Golden, CO), GII (PLA trilayer plastic films from Cargill Dow Polymers LLC, Minnetonka, MN), and Ca-I (PLA monolayer plastic films from Cargill Dow Polymers LLC). The average soil temperature and moisture content in Costa Rica were 27°C and 80 
<br/><br/><label>Subjects--Topical Terms: </label><br/>POLYLACTIC ACID PLASTIC<br/>COMPOSTING ENVIRONMENT<br/>TROPICAL SOIL