Heidarian Pejman, Aziz Shazed, Halley Peter J, McNally Tony, Peijs Ton, Vandi Luigi-Jules, Varley Russell J
Carbon Nexus at the Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
School of Chemical Engineering, University of Queensland, St Lucia 4072, Australia.
Biomacromolecules. 2024 Aug 12;25(8):5039-5047. doi: 10.1021/acs.biomac.4c00441. Epub 2024 Jul 23.
In this study, we explore an approach to enhance the mechanical performance of poly(3-hydroxybutyrate--3-hydroxyvalerate) (PHBV) by utilizing the self-reinforcing effect of β-phase-induced PHBV electrospun nanofiber mats. This involves electrospinning combined with low-temperature postspun vapor solvent interfiber welding. Scanning electron microscopy imaging confirmed fiber alignment, while XRD diffraction revealed the presence of both α and β crystalline phases under optimized electrospinning conditions. The resulting composite exhibited significant improvements in mechanical properties attributed to the formation of more perfectly structured α and β polymorphs and enhanced interfacial adhesion of electrospun nanofibers after vapor solvent treatment. This approach offers entirely recyclable and biodegradable materials, presenting the potential for a new family of sustainable bioplastics.
在本研究中，我们探索了一种通过利用β相诱导的聚（3-羟基丁酸酯-3-羟基戊酸酯）（PHBV）电纺纳米纤维毡的自增强效应来提高其机械性能的方法。这涉及到静电纺丝与低温后纺蒸汽溶剂纤维间焊接相结合。扫描电子显微镜成像证实了纤维的排列，而X射线衍射显示在优化的静电纺丝条件下同时存在α和β晶相。所得复合材料的机械性能有显著改善，这归因于形成了结构更完美的α和β多晶型物，以及蒸汽溶剂处理后电纺纳米纤维的界面粘附增强。这种方法提供了完全可回收和可生物降解的材料，展现了新型可持续生物塑料系列的潜力。
