caa a22 4500 445384980 CHVBK 20180317143029.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10924-011-0319-z doi (NATIONALLICENCE)springer-10.1007/s10924-011-0319-z Degradation of Poly( l -Lactic Acid) and Bio-Composites by Alkaline Medium Under Various Temperatures [Elektronische Daten] [B. Tisserat, V. Finkenstadt] Ribbons of poly(lactic acid) (PLA) and PLA containing 10 or 25% Osage Orange (OO) biocomposites of various sized heartwood particles were exposed to non-composting soil conditions either outdoors or in a greenhouse. No appreciable degradation was evident after 208day treatments. An artificial alkaline degradation test system was developed to reduce the study time required to evaluate PLA compositional properties on degradation. Ribbons of PLA and PLA-OO biocomposites of various sized particles were subjected to hydrolysis in alkaline concentrations (0, 0.05, 0.1, 0.15, and 0.25M NaOH) under various temperatures (15, 20, 25, 30, 35, 40, and 80°C) up to 56days. Higher concentrations of NaOH (e.g., 0.25M) caused more dramatic and rapid deterioration of PLA and PLA-OO composites than lower NaOH concentrations for all temperatures tested. Incubation in either the low temperatures (15 and 20°C) or the highest temperature (80°C) was consistently more effective in PLA-OO degradation than employing 35 or 40°C. Several alkaline and temperature test combinations are offered to study accelerated PLA degradation. Ribbons immersed in NaOH were examined with the scanning electron microscope to analyze for morphological alterations. Springer Science+Business Media, LLC (outside the USA), 2011 Poly(lactide) nationallicence Hydrolysis nationallicence Degradation nationallicence Erosion nationallicence Alkaline solution nationallicence Tisserat B. Functional Foods Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., 61604, Peoria, IL, USA aut Finkenstadt V. Plant Polymer Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 61604, Peoria, IL, USA aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 766-775 1566-2543 19:3<766 2011 19 10924 https://doi.org/10.1007/s10924-011-0319-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0319-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tisserat B. Functional Foods Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 1815 N. University St., 61604, Peoria, IL, USA aut NATIONALLICENCE 700 1- Finkenstadt V. Plant Polymer Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, United States Department of Agriculture, 61604, Peoria, IL, USA aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 766-775 1566-2543 19:3<766 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer