Plasticization of PLA-based bioplastics

The regular reduction of Tg with addition of plasticizer up to the solubility limit is satisfactorily described by two well-known equations. One was proposed by Fox (eqn 10.3) for the Tg/composition dependence of polymer/diluent mixtures and miscible polymer blends [Pg.271]

The analysis of dependence of melting temperature on plasticizer content in the range in which PLA and acetyl tri-n-hutyl citrate (ATBC) are miscible gives indications of polymer-plasticizer interactions (Baiardo et al, 2003). The Flory (1953) equation fits well for miscible polymer-diluent mixtures [Pg.271]

7 Reciprocal melting temperature of poly(lactic acid) (PLA)/(acetyl tri-n-butyl citrate (ATBC)) blends as function of ATBC weight fraction (Baiardo et a/., 2003). [Pg.272]

The application of plasticizers causes some adverse effects. One of them is that, for processing-improvement purposes, it probably has an adverse effect on the adhesion strength between the layers of plasticized starch-polyester [Pg.273]

9 Typical tensile curves of extruded and molded poly (lactic acid)/starch (60 40) blends containing 1 5% of various plasticizers as representatives (Ke and Sun, 2001 b). [Pg.274]

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