caa a22 4500 445385251 CHVBK 20180317143030.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10924-010-0267-z doi (NATIONALLICENCE)springer-10.1007/s10924-010-0267-z Effect of Orientation on the Morphology and Mechanical Properties of PLA/Starch Composite Filaments [Elektronische Daten] [Randal Shogren, Gordon Selling, J. Willett] Polylactic acid (PLA)/starch fibers were produced by twin screw extrusion of PLA with granular or gelatinized starch/glycerol followed by drawing through a set of winders with an intermediate oven. At 30% starch, fibers drawn 2-5x were highly flexible (elongation 20-100%) while undrawn filaments were brittle (elongation 2-9%). Tensile strength and moduli increased with increasing draw ratio but decreased with increasing starch content. Mechanical properties were better for composites made with gelatinized starch/glycerol than granular starch. In conclusion, orientation greatly increases the flexibility of PLA/starch composites and this may be useful not only in fibers but also possibly in molded articles. Other advantages of starch addition could include fiber softness without added plasticizer, moisture/odor absorbency and as a carrier for active compounds. Springer Science+Business Media, LLC (outside the USA), 2011 Starch nationallicence Polylactic acid nationallicence Fibers nationallicence Extrusion nationallicence Shogren Randal Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA/ARS/NCAUR, 1815 N. University St., 61604, Peoria, IL, USA aut Selling Gordon Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA/ARS/NCAUR, 1815 N. University St., 61604, Peoria, IL, USA aut Willett J. Office of the Director, Midwest Area, USDA/ARS, 1815 N. University St., 61604, Peoria, IL, USA aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/2(2011-06-01), 329-334 1566-2543 19:2<329 2011 19 10924 https://doi.org/10.1007/s10924-010-0267-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-010-0267-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shogren Randal Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA/ARS/NCAUR, 1815 N. University St., 61604, Peoria, IL, USA aut NATIONALLICENCE 700 1- Selling Gordon Plant Polymer Research Unit, National Center for Agricultural Utilization Research, USDA/ARS/NCAUR, 1815 N. University St., 61604, Peoria, IL, USA aut NATIONALLICENCE 700 1- Willett J. Office of the Director, Midwest Area, USDA/ARS, 1815 N. University St., 61604, Peoria, IL, USA aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/2(2011-06-01), 329-334 1566-2543 19:2<329 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer