Effect of Various Surface Modifications on Characterization of New Natural Cellulosic Fiber from Coconut Tree Secondary Flower Leaf Stalk Fiber (CSF)

ABSTRACT

In the objective of the study is to improve the mechanical properties and reduce the hydrophilic nature of new novel bio fiber of coconut tree secondary flower leaf stalk (CSF). As per the state of art, raw and various chemical treated CSF studies are not well established and not enough to characterize and sustainability of novel fiber polymer reinforcement material. So CSF was subjected to alkali, silane, permanganate, and benzoylation surface treatments and further investigation was made. After the different chemical treatments the physical, chemical, mechanical, thermal stability (TGA), morphology analysis (MA), crystallinity and crystal size (CA), and functional groups were analyzed. The results revealed that tensile strength (650.54 MPa) and Young’s Modulus value (1.89 GPa) significantly increased due to benzoylation treatment of the CSF. In TGA, compared to other treatments, the benzoylation treated CSF thermal stability, exhibited a maximum holding temperature of 567°C. From the XRD analysis, considerable variations were observed in the crystallinity size and index, due to the new chemical bond formation in the CSF. FTIR analysis confirmed the presence of cellulose, hemicellulose, lignin, and wax in CSF. SEM revealed that resulted in a better rough surface, fewer impurities, and exposure of the inner fibrillar structure in CSF.

摘要

本研究旨在改善椰子树次花叶柄 (CSF) 新型生物纤维的力学性能, 降低其亲水性. 根据目前的技术水平, 未经处理和各种化学处理的CSF研究还没有很好地建立, 也不足以描述新型纤维聚合物增强材料的特性和可持续性. 因此, 对脑脊液进行了碱、硅烷、高锰酸盐和苯甲酰化表面处理, 并进行了进一步的研究. 经过不同的化学处理后, 对其物理、化学、机械、热稳定性 (TGA)、形貌分析 (MA)、结晶度和晶粒尺寸 (CA)以及官能团进行了分析. 结果表明, CSF经苯甲酰化处理后, 拉伸强度 (650.54MPa) 和杨氏模量值 (1.89GPa) 显著提高. 在TGA中, 与其他处理相比, 苯甲酰化处理的CSF热稳定性表现出567°C的最大保持温度. 根据XRD分析, 由于CSF中形成了新的化学键, 结晶度大小和指数发生了很大变化. FTIR分析证实CSF中存在纤维素、半纤维素、木质素和蜡. 扫描电镜 (SEM) 显示, CSF表面粗糙度更好, 杂质更少, 内部纤维结构暴露.

KEYWORDS:

• Coconut tree secondary flower leaf stalk fiber (CSF)
• surface treatments
• mechanical properties
• thermal stability
• cellulose

关键词:

• 椰子树次生花叶柄纤维(CSF)
• 表面处理
• 机械性能
• 热稳定性
• 纤维素

Disclosure statement

No potential conflict of interest was reported by the authors.