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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.

DOI:10.3390/polym14153177
PMID:35956691
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9370966/
Abstract

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.

摘要

采用熔融共混后压缩成型工艺，制备了用三丁酸甘油酯（TB）增塑的全生物基聚乳酸（PLA）和聚（3-羟基丁酸酯）（PHB）共混物及其基于几丁质纳米颗粒（ChNPs）的纳米复合材料。PHB与ChNPs的组合对增塑PLA基体的结晶度有影响，从而改善了其氧气和二氧化碳阻隔性能，并显示出紫外线阻隔效果。添加2 wt%的ChNP可提高共混物的初始热降解温度和整体迁移行为，而TB的存在曾对这些性能造成不利影响。所有加工材料在堆肥条件下均能完全分解，表明它们作为完全可生物降解包装材料具有潜在应用价值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/1e3ab6cf855f/polymers-14-03177-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/c0ef041f5f5d/polymers-14-03177-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/be7941e1d376/polymers-14-03177-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/78bb5a6ba90b/polymers-14-03177-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/718d670979ac/polymers-14-03177-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/cf3493835db5/polymers-14-03177-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/fe2a7ebbfb6d/polymers-14-03177-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/d90688059f98/polymers-14-03177-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/f6930ae942a2/polymers-14-03177-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/0ae7887027ed/polymers-14-03177-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/1e3ab6cf855f/polymers-14-03177-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/c0ef041f5f5d/polymers-14-03177-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/be7941e1d376/polymers-14-03177-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/78bb5a6ba90b/polymers-14-03177-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/718d670979ac/polymers-14-03177-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/cf3493835db5/polymers-14-03177-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/fe2a7ebbfb6d/polymers-14-03177-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/d90688059f98/polymers-14-03177-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/f6930ae942a2/polymers-14-03177-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/0ae7887027ed/polymers-14-03177-g009a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ead1/9370966/1e3ab6cf855f/polymers-14-03177-g010.jpg

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