基于增塑聚乳酸/聚3-羟基丁酸酯（PLA/PHB）共混物的几丁质纳米复合材料作为完全可生物降解的包装材料

Chitin Nanocomposite Based on Plasticized Poly(lactic acid)/Poly(3-hydroxybutyrate) (PLA/PHB) Blends as Fully Biodegradable Packaging Materials.

作者信息

Iglesias-Montes Magdalena L, Soccio Michelina, Siracusa Valentina, Gazzano Massimo, Lotti Nadia, Cyras Viviana P, Manfredi Liliana B

机构信息

Instituto de Investigaciones en Ciencia y Tecnología de Materiales, Facultad de Ingeniería, Universidad Nacional de Mar del Plata-Consejo de Investigaciones Científicas y Técnicas, Mar del Plata 7600, Argentina.

Department of Civil, Chemical, Environmental and Materials Engineering, University of Bologna, 40131 Bologna, Italy.

出版信息

Polymers (Basel). 2022 Aug 3;14(15):3177. doi: 10.3390/polym14153177.

Fully bio-based poly(lactic acid) (PLA) and poly(3-hydroxybutyrate) (PHB) blends plasticized with tributyrin (TB), and their nanocomposite based on chitin nanoparticles (ChNPs) was developed using melt mixing followed by a compression molding process. The combination of PHB and ChNPs had an impact on the crystallinity of the plasticized PLA matrix, thus improving its oxygen and carbon dioxide barrier properties as well as displaying a UV light-blocking effect. The addition of 2 wt% of ChNP induced an improvement on the initial thermal degradation temperature and the overall migration behavior of blends, which had been compromised by the presence of TB. All processed materials were fully disintegrated under composting conditions, suggesting their potential application as fully biodegradable packaging materials.