title: Development of biodegradable flexible films of starch and poly(lactic acid) plasticized with adipate or citrate esters.
abstract: Biodegradable films were produced from blends contained a high amount of thermoplastic starch (TPS) and poly(lactic acid) (PLA) plasticized with different adipate or citrate esters. It was not possible to obtain pellets for the production of films using only glycerol as a plasticizer. The plasticization of the PLA with the esters and mixture stages added through extrusion was critical to achieve a blend capable of producing films by blow extrusion. Adipate esters were the most effective plasticizers because they interacted best with the PLA and yielded films with appropriate mechanical properties.
authors.affiliation: Department of Food Science and Technology, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid (PR 445), km 380, PO Box 6001, CEP 86051-990, Londrina, Brazil. marianneshirai@hotmail.com
authors.forename: M A
authors.initials: MA
authors.lastname: Shirai
authors.forename: M V E
authors.initials: MV
authors.lastname: Grossmann
authors.forename: S
authors.initials: S
authors.lastname: Mali
authors.forename: F
authors.initials: F
authors.lastname: Yamashita
authors.forename: P S
authors.initials: PS
authors.lastname: Garcia
authors.forename: C M O
authors.initials: CM
authors.lastname: Müller
mesh_terms: D000272:Adipates / Q000737:chemistry; D001673:Biodegradation, Environmental; D019343:Citric Acid / Q000138:chemical synthesis / Q000737:chemistry; D004952:Esters / Q000138:chemical synthesis / Q000737:chemistry; D019344:Lactic Acid / Q000138:chemical synthesis / Q000737:chemistry; D010969:Plastics; D011091:Polyesters; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D013213:Starch / Q000138:chemical synthesis / Q000737:chemistry
chemical_list: D000272:Adipates; D004952:Esters; D010969:Plastics; D011091:Polyesters; D011108:Polymers; D019343:Citric Acid; D019344:Lactic Acid; C033616:poly(lactide); C029900:adipic acid; D013213:Starch