caa a22 4500 445384859 CHVBK 20180317143029.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10924-011-0311-7 doi (NATIONALLICENCE)springer-10.1007/s10924-011-0311-7 Preparation and Characterization of Clay Nanocomposites of Plasticized Starch and Polypropylene Polymer Blends [Elektronische Daten] [Candice DeLeo, Caio Pinotti, Maria do Carmo Gonçalves, Sachin Velankar] Plasticized starch (PLS) is a renewable, degradable, and inexpensive polymer, but it suffers from poor mechanical properties. The mechanical properties can be improved by blending PLS with polyolefins, nonetheless, at high PLS content, the mechanical properties remain poor. Here we show that addition of clay can greatly improve the mechanical properties of PLS/polypropylene blends at high starch content. Unmodified and organically modified montmorillonite clays, MMT and Cloisite 30B respectively, were added to blends of glycerol-plasticized starch and polypropylene, compatibilized using maleated polypropylene. TEM indicates that MMT is well dispersed in the PLS phase of the blends, while Cloisite 30B is located both within the PLS phase as well as at the interface between PLS and PP. At high PLS content, the addition of clay increased the tensile strength and tensile modulus by an order of magnitude, while reducing the ultimate elongation only slightly. Such improvements are attributable to both the addition of clay as a reinforcing component, as well as to the change in the two phase morphology due to addition of clay. Springer Science+Business Media, LLC, 2011 Clay nanocomposites nationallicence Thermoplastic starch nationallicence Renewable polymers nationallicence Degradable polymers nationallicence DeLeo Candice Department of Chemical Engineering and Mascaro Center for Sustainable Innovation, University of Pittsburgh, 1249 Benedum Hall, 1526, Pittsburgh, PA, USA aut Pinotti Caio Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, São Paulo, Brazil aut do Carmo Gonçalves Maria Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, São Paulo, Brazil aut Velankar Sachin Department of Chemical Engineering and Mascaro Center for Sustainable Innovation, University of Pittsburgh, 1249 Benedum Hall, 1526, Pittsburgh, PA, USA aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 689-697 1566-2543 19:3<689 2011 19 10924 https://doi.org/10.1007/s10924-011-0311-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0311-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- DeLeo Candice Department of Chemical Engineering and Mascaro Center for Sustainable Innovation, University of Pittsburgh, 1249 Benedum Hall, 1526, Pittsburgh, PA, USA aut NATIONALLICENCE 700 1- Pinotti Caio Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, São Paulo, Brazil aut NATIONALLICENCE 700 1- do Carmo Gonçalves Maria Institute of Chemistry, University of Campinas, P.O. Box 6154, 13083-970, Campinas, São Paulo, Brazil aut NATIONALLICENCE 700 1- Velankar Sachin Department of Chemical Engineering and Mascaro Center for Sustainable Innovation, University of Pittsburgh, 1249 Benedum Hall, 1526, Pittsburgh, PA, USA aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 689-697 1566-2543 19:3<689 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer