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首页> 外文期刊>Journal of Polymers and the Environment >Upcycling of Vine Shoots: Production of Fillers for PHBV-Based Biocomposite Applications
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Upcycling of Vine Shoots: Production of Fillers for PHBV-Based Biocomposite Applications

机译：葡萄芽的升级：基于PHBV的生物复合应用的填料的生产

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摘要

This paper aims at investigating the potential of vine shoots (ViSh) upcycling as fillers in novel poly(3-hydroxybutyrate-3-hydroxyvalerate) (PHBV) based biocomposites. ViSh particles of around 50 mu m (apparent median diameter) were obtained combining dry grinding processes, and mixed with PHBV using melt extrusion. Thermal stability and elongation at break of biocomposites were reduced with increasing contents of ViSh particles (10, 20 and 30 wt%), while Young's modulus and water vapor permeability were increased. It was shown that a surface gas-phase esterification allowed to significantly increase the hydrophobicity of ViSh particles (increase of water contact angles from 59 degrees to 114 degrees), leading to a reduction of 27% in the water vapor permeability of the biocomposite filled with 30 wt% of ViSh. The overall mechanical performance was not impacted by gas-phase esterification, demonstrating that the interfacial adhesion between the virgin ViSh particles and the PHBV matrix was already good and that such filler surface treatment was not required in that case. It was concluded that ViSh particles can be interestingly used as low cost fillers in PHBV-based biocomposites to decrease the overall cost of materials.
机译：本文旨在调查藤芽（vish）升高为基于新型聚（3-羟基丁酯-3-羟基苯基）（PHBV）的生物复合材料的填料的潜力。将干磨削方法组合，并使用熔融挤出将干研磨方法与PHBV混合，得到约50μm（表观中值）的颗粒。随着Vish颗粒（10,20和30wt％）的增加，减少了生物复合材料中断的热稳定性和伸长率，而杨氏模量和水蒸气渗透率增加。结果表明，表面气相酯化允许显着增加Vish颗粒的疏水性（从59度到114度的水接触角的增加），导致填充的生物复合材料的水蒸气渗透率降低27％ 30％wt％的vish。整体机械性能不受气相酯化的影响，证明了原始差颗粒和PHBV基质之间的界面粘附已经良好，并且在这种情况下不需要这种填充表面处理。得出结论，随着基于PHBV的生物复合材料，有趣的颗粒可以有趣地使用作为低成本填充剂，以降低材料的总成本。

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