Preparation and Physical Characterization of Nanocomposites of PLA / Layered Silicates
This work was focused in to study the compatibility, dispersion and exfoliation of modified nanoclays in biodegradable polymers and evaluate its effect on the physical, mechanical and thermal properties on the biodegradable matrix used. The formulations have been developed with polylactic acid (PLA) and organically modified montmorillonite-type commercial nanoclays (Cloisite 15, Cloisite 20, and Cloisite 30B) in the presence of a plasticizer agent, specifically Polyethylene Glycol of low molecular weight. Different compositions were evaluated, in order to identify the influence of each nanoclayin the polymeric matrix. The mixtures were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (DRX), transmission electron microscopy (TEM) and Tensile Test. These tests have allowed understanding the behavior of each of the mixtures developed.
 Z. Kulinski, E. Piorkowska, K. Gadzinowska, & M. Stasiak, "Plasticization of Poly (L -lactide) with Poly (propylene glycol)” Biomacromolecules, Vol 7, 2128–2135. 2006.
 H. Li, & M. A. Huneault. "Effect of nucleation and plasticization on the crystallization of poly (lactic acid)” Polymer, Vol. 48, 6855-6866. 2007.
 M. Shahlari, S. Lee, "The Annual Meeting Philadelphia, PA”. 2008.
 S. Rodriguez-Llamazares et al., "Poly(ethylene glycol) as a compatibilizer and plasticizer of poly(lactic acid) clay nanocompositos” High performance polymers, Vol 24(4), 254-261. 2012.
 M. Pluta, "Plasticized Polylactide/Clay Nanocomposites . I. The Role of Filler Content and its Surface Organo-Modification on the Physico-Chemical Properties”, Journal of Polymer Science: Part B: Polymer Physics, Vol. 44, 299–311. 2006.
 S. Tanoue, A. Hasook & Y. Iemoto, "Preparation of Poly (lactic acid)/ Poly (ethylene glycol)/OrganoclayNanocomposites by Melt Compounding”, Polymer Composites, 3–9. 2006
 O. Nobuo, et al, "Structure and Thermal/Mechanical Properties of Poly (l-lactide)-Clay Blend” Journal of Polymer Science: Part B: Polymer Physics, Vol. 35, 389–396. 1997.