Characterization Studies on New Natural Cellulosic Fiber Extracted from the Bark of Erythrina variegata

ABSTRACT

This research was aimed at investigating the physicochemical, thermal, and mechanical properties of newly identified cellulosic fiber extracted from the bark of Erythrina variegata (EV) tree. The chemical analysis of EVFs revealed the existence of high cellulose (50.64 wt.%) and lignin content (17.44 wt.%) which in turn makes the fiber rigid and strong. Crystallinity index and crystallite size of EVFs determined through X-ray diffraction analysis were found to be 51.80% and 3.00 nm. High onset temperature for hemicellulose degradation (227.99°C) and high activation energy (74.05 kJ/mol) confirms the thermal stability of EVFs. The tensile strength and young’s modulus of EVF were found to be 503.2315 ± 202.23 MPa and 7.62 ± 2.91 GPa. The FESEM micrographs of EVFs revealed the existence of a rough fiber surface, which facilitate better interfacial adhesion with the polymer matrix.

摘要

本研究旨在研究从刺桐树皮中提取的新鉴定的纤维素纤维的物理化学、热性能和机械性能. EVFs的化学分析表明,存在高纤维素(50.64 wt.%)和木质素含量(17.44 wt.%),这反过来使纤维坚硬而牢固. X射线衍射分析表明,EVFs的结晶度指数和晶粒尺寸分别为51.80%和3.00nm. 半纤维素降解的高起始温度(227.99℃)和高活化能(74.05 kJ/mol)证实了EVFs的热稳定性. EVF的拉伸强度和杨氏模量分别为503.2315±202.23MPa和7.62±2.91GPa. EVFs的FESEM显微照片显示存在粗糙的纤维表面,有助于与聚合物基体更好的界面粘合.

KEYWORDS:

• Erythrina variegata
• mechanical properties
• thermal properties
• chemical constituent
• cellulose fiber
• scanning electronic microscopy

关键词:

• 刺桐
• 力学性能
• 热性能
• 化学成分
• 纤维素纤维
• 扫描电子显微镜

Acknowledgments

The authors thank final year mechanical engineering students of Government Polytechnic college-Villupuram 605752, Tamilnadu India for rendering their support for carrying out this research work.

Additional information

Funding

No funding source