Characterization of New Natural Cellulosic Fiber from Coconut Tree Primary Flower Leaf Stalk Fiber (CPFLSF)

ABSTRACT

The properties of the chemical, physical, mechanical, thermal(TG & DSC),microscopic analysis(SEM), x-ray diffraction(XRD),Fourier-transform infrared spectroscopy(FTIR) of raw and alkali treated coconut tree primary flower leaf stalk fiber (CPFLSF) are reported for the first time in this work. Different percentages of NaOH such as 2%,4%, and 6% are used to treat the extracted fibers to explore the influence of alkali treatment over the properties of the fibers. FTIR analysis reveals that the cellulose and wax content was found to reduce while increasing the NaOH concentration. The tensile test results showed that CPFLSF treated with 6% NaOH exhibited better tensile properties in the range of 2008–2653 MPa. The XRD for the CPFLSF treated with 6% NaOH showed the crystallinity index of 40.12% crystallinity size of 27.25 nm. Thermogravimetric analysis reveals that CPFLSF-6% is thermally stable up to 250°C.Scanning electron microscopy analysis revealed the presence of impurities over the surface of the raw fiber and found that these impurities are minimized when CPFLSF is treated with high concentration of NaOH, which leads to the enhancement of properties. The work provides a way to manufacturing a polymer matrix composite for light load automotive application.

摘要

原碱处理椰子树原花叶茎纤维（CPFLSF）的化学、物理、机械、热（TG+DSC）、显微分析（SEM）、X射线衍射（XRD）、傅立尔-变换红外光谱（FTIR）的特性首次报告在这项工作. 不同比例的NaOH，如2%，4%和6%用于治疗提取的纤维，以探索碱处理对纤维性能的影响. FTIR分析表明，纤维素和蜡含量在增加NaOH浓度的同时降低. 拉伸试验结果表明，在2008-2653MPa范围内，用6%NaOH治疗的CPFLSF具有较好的抗拉性能. 热重力分析表明，CPFLSF-6%的热稳定性高达250°C. 扫描电子显微镜分析发现，在原纤维表面存在杂质，发现当CPFLSF处理高浓度的NaOH时，这些杂质最小化，从而提高性能. 该工作为轻型汽车应用制造聚合物基体复合材料提供了一种方法.

KEYWORDS:

• CPFLSF
• cellulose
• crystallinity size
• thermal stability
• morphological study

关键词:

• 纤维素
• 结晶大小
• 热稳定性
• 形态学研究