Development of Biodegradable Flexible Films of Starch and Poly(lactic Acid) Plasticized with Adipate or Citrate Esters

Overview

Journal Carbohydr Polym

Specialty Biochemistry

Date 2012 Dec 11

PMID 23218260

Citations 26

Authors

M A Shirai

M V E Grossmann

S Mali

F Yamashita

P S Garcia

C M O Muller

Affiliations

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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.

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