Effect of Various Chemical Treatments on Physical, Mechanical, Thermal and Morphological Properties of Calotropis Gigantea Bast Fiber

ABSTRACT

This paper highlights the chemical surface modifications of Calotropis gigantea (CG) bast fiber for attaining suitable properties as reinforcements in polymeric composites. The effect of chemical modification on its various properties like physical, mechanical, thermal and morphological properties was also discussed in this research. For this purpose the extracted fibers were chemically treated with various chemicals such as sodium hydroxide, potassium permanganate, sodium chlorite and benzoyl chloride. After surface modifications, its density, mechanical property, thermal gravimetry analysis (TGA), Fourier transform infrared spectroscopy (FTIR) and surface morphology were thoroughly investigated. The tensile strength and Young’s modulus of alkali treated CG fiber was found to be 210.39 MPa and 1.77 GPa respectively. The crystallinity index was improved by 25.37% as compared with untreated CG fiber. Finally, it was observed that alkali treated fiber gives better performance and enhances various properties of Calotropis gigantea stem fibers for use as novel reinforcement in composite materials.

摘要

本论文重点介绍了巨藻（CG）韧皮纤维的化学表面改性，以获得作为聚合物复合材料增强材料的适当性能. 本研究还讨论了化学改性对其物理、机械、热和形态性能的影响. 为此目的，用各种化学品如氢氧化钠、高锰酸钾、亚氯酸钠和苯甲酰氯对提取的纤维进行化学处理. 表面改性后，对其密度、力学性能、热重分析（TGA）、傅立叶变换红外光谱（FTIR）和表面形貌进行了深入研究. 碱处理CG纤维的拉伸强度和杨氏模量分别为210.39MPa和1.77GPa. 与未处理的CG纤维相比，结晶度指数提高了25.37%. 最后，我们观察到，碱处理纤维具有更好的性能，并增强了作为复合材料中新型增强材料的巨骨藻茎纤维的各种性能.

KEYWORDS:

• Calotropis gigantea
• bast fibers
• chemical treatment
• mechanical properties
• thermal stability
• FTIR
• SEM

关键词:

• 巨藻
• 韧皮纤维
• 化学处理
• 机械性能
• 热稳定性

Disclosure statement

No potential conflict of interest was reported by the author(s).

Ethical approval

We confirm that all the research meets ethical guidelines and adheres to the legal requirements of the study country. The research does not involve any human or animal welfare related issues.

Additional information

Funding

This research work was not funded by any organization or any external source. The entire expenditure was borne by the authors (self-funding).