The development of new materials derived from renewable sources is a priority on a technological and environmental point of view. Poly(lactic acid) (PLA) is one of the most promising polymers for packaging films applications, because it is renewable and biodegradable. The low tear resistance of current bioplastic material for films and shoppers limits their diffusion.The flexibility of PLA based films can be modulated by using proper plasticizers [1]. The goal of this work is modulating the crystallinity, stiffness and toughness of PLA, adding also LAK as nucleating agent [2] and a reactive plasticizer [3]. Nucleating agents and plasticizers have a synergistic effect on thermal and mechanical properties of PLA blends [4, 5]. The effect of combining these additives on tearing resistance was thus investigated in this work.
Tearing resistance of blown biodegradable films based on PLA
MALLEGNI, NORMA;COLTELLI, MARIA BEATRICE;CINELLI, PATRIZIA;LAZZERI, ANDREA
2016-01-01
Abstract
The development of new materials derived from renewable sources is a priority on a technological and environmental point of view. Poly(lactic acid) (PLA) is one of the most promising polymers for packaging films applications, because it is renewable and biodegradable. The low tear resistance of current bioplastic material for films and shoppers limits their diffusion.The flexibility of PLA based films can be modulated by using proper plasticizers [1]. The goal of this work is modulating the crystallinity, stiffness and toughness of PLA, adding also LAK as nucleating agent [2] and a reactive plasticizer [3]. Nucleating agents and plasticizers have a synergistic effect on thermal and mechanical properties of PLA blends [4, 5]. The effect of combining these additives on tearing resistance was thus investigated in this work.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
