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由聚（3-羟基丁酸酯-3-羟基戊酸酯）（PHBV）制成的自增强生物复合材料：一种通过熔融加工实现可持续包装生产的创新方法。

Self-Reinforced Biocomposites Made from Poly(3-hydroxybutyrate--3-hydroxyvalerate) (PHBV): An Innovative Approach to Sustainable Packaging Production through Melt Processing.

作者信息

Schmidt Anja, Bittmann-Hennes Birgit, Moncada Danny, Montero Belén

机构信息

Grupo de Polímeros, Centro de Investigación en Tecnologías Navales e Industriales (CITENI), Departamento de Física y Ciencias de la Tierra, Universidade da Coruña (UDC), Campus Industrial de Ferrol, 15471 Ferrol, Spain.

Leibniz-Institut für Verbundwerkstoffe GmbH, Erwin-Schrödinger-Str. Geb. 58, 67663 Kaiserslautern, Germany.

出版信息

ACS Omega. 2024 Dec 17;9(52):51073-51088. doi: 10.1021/acsomega.4c05957. eCollection 2024 Dec 31.

DOI:10.1021/acsomega.4c05957
PMID:39758632
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11696434/
Abstract

The production of self-reinforced composites allows for a targeted tailoring of the property profile for specific applications and offers the physical-mechanical advantages of a synergistic combination of the two components with a high value in terms of their end-of-life scenarios. This study deals with the preparation and evaluation of self-reinforced biocomposites of poly(3-hydroxybutyrate--3-hydroxyvalerate) (PHBV) with PHBV microparticles produced for the first time by industry-oriented melt processing. First, microparticles with a size of 4 μm were prepared and characterized by using the miniemulsion/evaporation technique. These microparticles were then incorporated into the PHBV matrix by extrusion and injection molding. Electron microscopy revealed particles in biocomposites. The results indicate heterogeneous nucleation, leading to higher crystallinity at higher melting temperatures. This leads to a slight embrittlement and an improvement of the barrier properties against oxygen and water vapor. These industrially produced biocomposites benefit from particles by showing, among other things, higher barrier properties while retaining their green character, making them promising and easily accessible candidates for future packaging applications.

摘要

自增强复合材料的生产能够针对特定应用对性能进行有针对性的调整，并在其生命周期结束场景方面，展现出两种组分协同组合所具有的物理机械优势，且具有很高的价值。本研究涉及聚（3-羟基丁酸酯-3-羟基戊酸酯）（PHBV）与PHBV微粒的自增强生物复合材料的制备与评估，这些微粒是首次通过面向工业的熔融加工生产出来的。首先，采用微乳液/蒸发技术制备并表征了尺寸为4μm的微粒。然后，通过挤出和注塑将这些微粒掺入PHBV基体中。电子显微镜显示了生物复合材料中的微粒。结果表明存在异相成核现象，导致在较高熔点温度下具有更高的结晶度。这会导致轻微脆化，并改善对氧气和水蒸气的阻隔性能。这些工业生产的生物复合材料受益于微粒，除其他方面外，表现出更高的阻隔性能，同时保持其绿色特性，使其成为未来包装应用中有前景且易于获得的候选材料。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/fe6f2d0dc253/ao4c05957_0013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/fe6f2d0dc253/ao4c05957_0013.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/423255b0f923/ao4c05957_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/b114d0359f62/ao4c05957_0003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/e4e2b8512fe4/ao4c05957_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/eeae480fe14a/ao4c05957_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/18a386c33be8/ao4c05957_0010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7b84/11696434/fe6f2d0dc253/ao4c05957_0013.jpg

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