Madival Abhishek Sadananda, Doreswamy Deepak, Maddasani Srinivasulu, Shettar Manjunath, Shetty Raviraj
Department of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India.
Department of Mechatronics, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India.
Polymers (Basel). 2022 Apr 6;14(7):1476. doi: 10.3390/polym14071476.
In recent days the rising concern over environmental pollution with excessive use of synthetic materials has led to various eco-friendly innovations. Due to the organic nature, abundance and higher strength, natural fibers are gaining a lot of interest among researchers and are also extensively used by various industries to produce ecological products. Natural fibers are widely used in the composite industry as an alternative to synthetic fibers for numerous applications and new sources of fiber are continuously being explored. In this study, a fiber extracted from the Furcraea foetida (FF) plant is characterized for its feasibility as a reinforcement to fabricate polymer composite. The results show that the fiber has a density of 0.903 ± 0.07 g/cm3, tensile strength (σt) of 170.47 ± 24.71 MPa and the fiber is thermally stable up to 250 °C. The chemical functional groups and elements present in the FF fiber are evaluated by conducting Fourier transform infrared spectroscopy (FT-IR) and energy dispersive spectroscopy (EDS). The addition of FF fibers in epoxy reduced the density (13.44%) and hardness (10.9%) of the FF/Epoxy (FF/E) composite. However, the void content (Vc < 8%) and water absorption (WA: < 6%) rate increased in the composite. The FF/E composite with 30% volume of FF fibers showed maximum σt (32.14 ± 5.54 MPa) and flexural strength (σf: 80.23 ± 11.3 MPa).
近年来，随着合成材料的过度使用，对环境污染的日益关注引发了各种环保创新。由于天然纤维具有有机特性、储量丰富且强度较高，因此在研究人员中引起了广泛关注，并且也被各行业广泛用于生产生态产品。天然纤维作为合成纤维的替代品，在复合材料行业中被广泛用于众多应用，并且人们不断探索新的纤维来源。在本研究中，对从龙舌兰（FF）植物中提取的一种纤维作为增强材料来制造聚合物复合材料的可行性进行了表征。结果表明，该纤维的密度为0.903±0.07 g/cm³，拉伸强度（σt）为170.47±24.71 MPa，并且该纤维在高达250℃时具有热稳定性。通过进行傅里叶变换红外光谱（FT-IR）和能量色散光谱（EDS）来评估FF纤维中存在的化学官能团和元素。在环氧树脂中添加FF纤维降低了FF/环氧树脂（FF/E）复合材料的密度（13.44%）和硬度（10.9%）。然而，复合材料中的空隙率（Vc<8%）和吸水率（WA：<6%）有所增加。含有30%体积FF纤维的FF/E复合材料表现出最大的σt（32.14±5.54 MPa）和弯曲强度（σf：80.23±11.3 MPa）。
