INVESTIGADORES
MANFREDI liliana Beatriz
congresos y reuniones científicas
Título:
Effect of two types of plasticizers on the properties of biodegradable polyester blends
Autor/es:
A. GIACOMINI; M. HANKOVITS; D.A.DAMICO; L. B. MANFREDI; V.P.CYRAS
Lugar:
Mar del Plata
Reunión:
Simposio; XVI Simposio Latinoamericano de Polímeros (SLAP 2018) y el XIV Congreso Iberoamericano de Polímeros (CIP 2018); 2018
Institución organizadora:
INTEMA
Resumen:
In recent years, the interest on the use of biodegradable polymers has increased because of their lower environmental impact compared to the commodity plastics. Polyhydroxybutyrate (PHB) is a thermoplastic biodegradable polymer produce by microorganisms. It presents good barrier properties to water vapor, oxygen and UV light; however, it is highly crystalline and brittle. In order to improve their processing and mechanical properties, plasticizers and/or another polymer could be added.Polylactic acid (PLA) is other biodegradable polyester which has mechanical properties comparable to commodities polymers. It has better mechanical resistance and is cheaper than PHB. Nevertheless, PLA has poor barrier properties. In this work, the development of biodegradable blends based on PHB and PLA with improved properties compared to the pure polymers was proposed. Two types of plasticizers, one of low molecular weight (glyceryl tributyrate, TB) and other polymeric (polydiethyleneglycol adipate, A) were added to the blends in order to study their influence on the structure and the mechanical properties of the final materials.