塞拉达埃斯特雷拉犬毛的可行性研究,以生产绿色复合材料
Alexandra Soledade Gomes1, Paulo Torrão Fiadeiro1, André Costa Vieira2
1Fiber Materials and Environmental Technologies Research Unit (FibEnTech-UBI), Universidade da Beira Interior, Rua Marquês D'Ávila e Bolama, 6201-001 Covilhã, Portugal.
Polymers
|March 13, 2024
概括
这项研究探讨了使用狗毛作为绿色复合材料的可持续增强剂. 未经处理的狗毛产生了最好的机械性能,突出了其作为合成纤维的环保替代品的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 生物复合材料是一种生物复合材料.
背景情况:
- 越来越多的环境问题推动了对可再生材料的需求,而不是对石油衍生物的需求.
- 自然纤维正在研究如何在复合材料中取代合成纤维.
- 狗养废弃物是一个潜在的,未充分利用的天然酸纤维来源.
研究的目的:
- 调查使用狗毛纤维作为绿色复合材料中强化材料的可行性.
- 评估化学处理 (NaOH和PVA) 对狗羊毛纤维特性和复合材料性能的影响.
- 评估狗羊毛作为复合材料应用中的可持续替代品的潜力.
主要方法:
- 狗羊毛纤维 (Serra da Estrela品种) 用NaOH和PVA进行化学处理.
- 使用X射线衍射 (X-RD) 分析的纤维组成.
- 通过扫描电子显微镜 (SEM) 检查的纤维形态.
- 评估了复合材料的可湿性和机械性能 (拉伸性,曲性,放松性).
主要成果:
- 未经处理的狗羊毛纤维产生了最好的复合材料机械性能.
- 使用未经处理的狗毛的复合材料实现了11MPa的拉伸强度和26.8MPa的屈曲强度.
- PVA处理显著降解纤维,降低机械强度高达59%.
- 氧化处理充当了清洁过程,去除了表面的和脂肪.
结论:
- 狗羊毛显示承诺作为绿色复合材料的自然增强剂.
- 化学处理,特别是PVA,对机械性能产生负面影响.
- 未经处理的狗毛为复合材料提供了一个可行的,可持续的增强选项.
相关概念视频
01:22Fiber Reinforced Concrete
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
01:26Design Example: Sustainability in Concrete Building
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground cistern.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground cistern.
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...