Extraction and characterization of natural fiber from Eleusine indica grass as reinforcement of sustainable fiber reinforced polymer composites

ABSTRACT

In the present scenario, the searching for novel plant fibers able to be used as reinforcement of polymer composites is highly appreciable. This study deals with extraction and characterization of Eleusine indica grass fibers extracted from its stem by manual retting process. From this study, it was found that the Eleusine indica has higher cellulose of 61.3 wt% content, density of 1143 kg/m³, average tensile strength and Young’s modulus equal to 22 MPa and 10.75 GPa, respectively. From the XRD studies, it was noted that the Crystallinity Index (CI) of Eleusine indica was 45%. The surface morphology of Eleusine indica grass was examined using a Scanning Electron Microscope (SEM) and Chemical functional group were confirmed by Fourier transform infrared spectroscopy (FT-IR). The thermal stability of EIF was evaluated using TG and DTG curves from Thermogravimetric (TG) analysis. The characterization results confirmed that Eleusine indica grass could be used for the production of sustainable fiber-reinforced polymer composites.

抽象

在本情景中，寻找能够用作聚合物复合材料增强的新型植物纤维是非常可欣赏的. 本研究涉及通过人工重新拔除工艺从茎中提取的Eleusine稻草纤维的提取和表征. 通过本研究，发现伊柳辛稻的纤维素含量较高，含量为1143kg/m3，平均拉伸强度和杨的模量分别等于22 MPa和10.75 GPa. 从XRD的研究中注意到，伊莱辛稻的结晶指数（CI）为45%. 使用扫描电子显微镜（SEM）对埃卢辛稻草的表面形态进行了检查，傅立叶变换红外光谱（FT-IR）确认了化学功能组. 从热重力（TG）分析中，利用TG和DTG曲线对EIF的热稳定性进行了评价. 鉴定结果证实，伊莱辛稻草可用于生产可持续纤维增强聚合物复合材料.

KEYWORDS:

• Eleusine indica grass
• chemical analysis
• XRD
• FTIR
• TGA
• single fiber tensile test
• SEM

关键词:

• 稻草
• 化学分析
• 单纤维拉伸测试

Additional information

Funding

This project was funded by the Deanship of Scientific Research (DSR) at King  Abdulaziz University, Jeddah, under grant no. KEP-74-130-38. The authors, therefore, acknowledge with thanks DSR for technical and financial support.