多个机械回收循环对PHBV生物复合材料的结构和性能的影响,填充了使用的咖啡粉 (SCG)
Grzegorz Janowski1, Wiesław Frącz1, Łukasz Bąk1
1Department of Materials Forming and Processing, Rzeszow University of Technology, Powstancow Warszawy 8, 35-959 Rzeszow, Poland.
Materials (Basel, Switzerland)
|December 11, 2025
概括
回收用消耗的咖啡粉 (SCG) 的聚3-基酸-co-3-基酸) (PHBV) 生物复合材料显示了增加的刚性和硬度. 该材料在经过多个循环后保持了适当的性能,支持其在循环经济中的使用.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 可持续材料 可持续材料
背景情况:
- 在循环经济中,对可持续材料的需求不断增长.
- 需要评估可生物降解复合材料的可回收性.
- 专注于聚3-xybutyrate-co-3-xyvalerate) (PHBV) 生物复合材料.
研究的目的:
- 研究多个机械回收循环对PHBV-SCG生物复合材料性能的影响.
- 评估机械,热和微观结构特征的变化.
- 评估材料是否适合循环经济应用.
主要方法:
- 在PHBV的挤出和注射成型中,使用了45%的消耗咖啡粉 (SCG).
- 在受控参数下连续五次机械回收循环.
- 分析机械性能,加工收缩,热结构 (DSC) 和微观结构 (SEM).
主要成果:
- 通过DSC观察到PHBV结晶度的增加.
- 机械性质的显著变化:弹性模量和硬度增加,破裂时延长和冲击强度降低.
- 微观结构的进化与减少的聚合物和脆弱的断裂机制.
- 稳定的线性收缩;与微孔形成相关的厚度收缩变化.
结论:
- PHBV-SCG生物复合材料在五个回收循环后保持了足够的机械和加工性能.
- 材料在回收时过渡到一个更坚硬,更易碎的状态.
- 证明了循环经济框架内的应用潜力.
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