Abstract
In biodegradable polymer world nanobiocomposites represent a new group of materials filled with inert nanoparticles that shows very interesting properties and the biodegradability of the matrix. In this work we have studied the effect of the polarity of the organomodified montmorillonite and of the elongational flow on the morphology and the rheological and mechanical properties of a new nanobiocomposite with a matrix of biodegradable PLA based blend. The elastic modulus enhances in presence of the nanofiller and this increase is larger and larger with the increment of the orientation. The tensile strength does not show any significant change at the same level of orientation. Moreover, a brittle-to-ductile transition is observed in the anisotropic sample and this effect is again more evident for the nanocomposite. The raise of the interlayer distance is higher for the more polar montmorillonite, even if the two nanocomposites show about the same final interlayer distance and morphology. Some exfoliation is also observed as a result of the application of the elongational flow.
References
Bordes, P., Pollet, E. and Avérous, L., “Nano-Biocomposites: Biodegradable Polyester/Nanoclay Systems”, Prog. Polym. Sci., 34, 125–155 (2009) 10.1016/j.progpolymsci.2008.10.002Search in Google Scholar
Briassoulis, D., Babou, E. and Hiskakis, M., “Degradation Behaviour and Field Performance of Experimental Biodegradable Drip Irrigation Systems”, J. Polym. Environ, 19, 341–361 (2011) 10.1007/s10924-011-0288-2Search in Google Scholar
Cabedo, L., Feijoo, J. L., Villanueva, M. P., Lagaron, J. M. and Gimenez, E., “Optimization of Biodegradable Nanocomposites Based on a PLA/PCL Blends for Food Packaging Applications”, Macromol. Symp., 233, 191–197 (2006) 10.1002/masy.200690017Search in Google Scholar
Dintcheva, N. T., Marino, R. and La Mantia, F. P., “The Role of the Matrix-Filler Affinity on Morphology and Properties of Polyethylene/Clay and Polyethylene/Compatibilizer/Clay Nanocomposites Dawn Fibers”, e-Polymers 054, 9, 660–669 (2009)Search in Google Scholar
Hiskakis, M., Babou, E. and Briassoulis, D., “Experimental Processing of Biodegradable Drip Irrigation Systems-Possibilities and Limitations”, J. Polym. Environ, 19, 887–907 (2011) 10.1007/s10924-011-0341-1Search in Google Scholar
Krikorian, V., Pochan, D. J., “Poly (L-lactic acid)/Layered Silicate Nanocomposite: Fabrication, Characterization, and Properties”, Chem. Mater., 15, 4317–4324 (2003) 10.1021/cm034369Search in Google Scholar
Kucharczyk, P., Otgonzu, O., Kitano, T., Gregorova, A., Kreuh, D., Cvelbar, U., Sedlarik, V. and Saha, P., “Correlation of Morphology and Viscoelastic Properties of Partially Biodegradable Polymer Blends Based on Polyamide 6 and Polylactide Copolyester”, Polym. Plast. Technol. Eng., 51, 1432–1442 (2012) 10.1080/03602559.2012.709296Search in Google Scholar
La Mantia, F. P., D'Amico, R. and Acierno, D., “Uniaxial Hot Stretching of Polystyrene and Mechanical Properties of the Oriented Samples”, Acta Polym., 30, 685–688, (1979) 10.1002/actp.1979.010301104Search in Google Scholar
La Mantia, F. P., Dintcheva, N. T., Scaffaro, R. and Marino, R., “Morphology and Properties of Polyethylene/Clay Nanocomposite Drawn Fibers”, Macromol. Mat. Eng., 293, 83–91 (2008) 10.1002/mame.200700204Search in Google Scholar
La Mantia, F. P., Marino, R. and Dintcheva, N. T., “Morphology Modification of Polyethylene/Clay Nanocomposite Samples under Convergent Flow”, Macromol. Mat. Eng., 294, 575–581 (2009) 10.1002/mame.200900066Search in Google Scholar
La Mantia, F. P., Arrigo, R. and Morreale, M., “Effect of the Orientation and Rheological Behaviour of Biodegradable Polymer Nanocomposites”, Europ. Polym. J., 54, 11–17 (2014) 10.1016/j.eurpolymj.2014.02.007Search in Google Scholar
La Mantia, F. P., Fontana, P., Morreale, M. and Mistretta, M. C. “Orientation Induced Brittle-Ductile Transition in a Polyethylene/Polyamide 6 Blend”, Polym. Test., 36, 20–23 (2014) 10.1016/j.polymertesting.2014.03.009Search in Google Scholar
La Mantia, F. P., Mistretta, M. C., Palermo, S. and Ceraulo, M., “Morphology, Rheology and Mechanical Properties of a New Nanobiocomposite”, J. Appl. Polym. Sci., 132 (2015) 10.1002/App.42128Search in Google Scholar
La Mantia, F. P., Mistretta, M. C., Palermo, S., Koci, E. and Ceraulo, M., “Thermomechanical Degradation of PLA-Based Nanobiocomposite”, Polym. Adv. Tech., 27, 308–313 (2015) 10.1002/Pat.3637Search in Google Scholar
La Mantia, F. P., Ceraulo, M., Mistretta, M. C., Sutera, F. and Ascione, L.: Effect of Polarity and Elongational Flow on the Morphology and Properties of a New Nanobiocomposite, AIP Publishing, Melville (2015)Search in Google Scholar
Maiti, P., Yamada, K., Okamoto, M., Ueda, K. and Okamoto, K., “New Polylactide/Layered Silicate Nanocomposites: Role of Organoclay”, Chem. Mater., 14, 4654–4661 (2002) 10.1021/cm020391bSearch in Google Scholar
Mose, B. R., Maranga, S. M., “A Review on Starch-Based Nanocomposites for Bioplastic Materials”, J. Mater. Sci. Eng. B., 1, 239–245 (2011)Search in Google Scholar
Sedlarik, V., Saha, N., Sedlarikova, J. and Saha, P., “Biodegradation of Blown Films Based on Poly(lactic acid) under Natural Conditions”, Macromol. Symp., 272, 100–103 (2008) 10.1002/masy.200851214Search in Google Scholar
Sedlarik, V., Otgonzul, O., Kitano, T., Gregorova, A., Hrabalova, M., Junkar, I., Cvelbar, U., Mozetic, M. and Saha, P., “Effect of Phase Arrangement on Solid State Mechanical and Thermal Properties of Polyamide 6/Polylactide Based Co-Polyester Blends”, J. Macromol. Sci., Phys., 51, 982–1001 (2012) 10.1080/00222348.2011.610265Search in Google Scholar
Xie, F., Pollet, E., Halleya, P. J. and Avérous, L., “Starch-Based Nano-Biocomposites”, Prog. Polym. Sci., 38, 1590–1628 (2013) 10.1016/j.progpolymsci.2013.05.002Search in Google Scholar
© 2016, Carl Hanser Verlag, Munich
