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从棕色海藻Sargassum spp 开发一个无粘合颗粒板
Jérôme Bauta1, Guadalupe Vaca-Medina1, Christine Delgado Raynaud1,2
1Laboratoire de Chimie Agro-Industrielle (LCA), Université de Toulouse, INRAE, Toulouse INP, 31030 Toulouse, France.
Materials (Basel, Switzerland)
|April 9, 2024
概括
这项研究开发了一个高密度的碎片板从加工的萨尔加索海藻. 这种创新的无粘合材料为管理海藻繁殖和创造有价值的产品提供了可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 自2010年以来,大量的萨加索海藻开花在加勒比地区造成了重大的生态和经济损害.
- 迫切需要有效的废物管理和对萨尔加索姆的利用战略.
研究的目的:
- 开发一种高密度,无粘合剂的碎片板,用Sargassum海藻制成.
- 评估基于石灰的碎片板的材料特性和最佳加工条件.
主要方法:
- 萨尔加索姆海藻通过双螺杆挤出与水进行预处理,以去除盐.
- 使用冷却系统的单轴热压缩来形成颗粒板.
- 包括DVS,DSC,DMA和TGA在内的分析技术用于材料表征.
主要成果:
- 最佳的热压缩条件被确定为200°C,40MPa压力和7.5分钟.
- 由此产生的碎片板实现了高密度 (1.63 g/cm3),屈曲强度 (32.3 MPa) 和模量 (6.8 GPa).
- 观察到较低的水接触角度 (38.9°),表明可能进一步修改表面.
结论:
- 使用热压缩,可以成功地从Sargassum海藻制造无粘合剂颗粒板.
- 海藻中的酸盐显著影响碎片板的机械性能.
- 这项研究提出了一种用于提升Sargassum海藻价值的新方法,利用整个藻类进行最小的加工.
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