Present study deals with the extraction and isolation of microcrystalline cellulose (MCC) from date palm fruit bunch stalk (DPFS) of date palm tree (Phoenix dactylifera L.) through integrated chemical method. To facilitate comparative study, each DPFS-treated, DPFS-pulp and DPFS-MCC samples were produced through respective bleaching, alkaline and acid hydrolysis treatments. The obtained samples were characterized in aspects of structural, morphological, elemental, crystallinity and thermal properties. From physicochemical analysis, fourier transform infrared ray (FTIR) and X-ray diffraction (XRD) showed the improved cellulose crystalline structure from DPFS-treated to DPFS-MCC. Morphology analysis revealed that the isolated DPFS-pulp and DPFS-MCC samples had microfibrillar structure, which achieved through the fibre disintegration by a series of chemical treatments. Moreover, the rigidity was also found the highest for isolated DPFS-MCC with 79.4% crystallinity degree. Further, the DPFS-MCC sample manifested better thermal properties for its high weight loss (84.15%), low residual weight (15.44%) and high decomposition temperature (364.2 °C) compared to the other fibre samples. Also, the DSC analysis showed the thermal behaviour which is in line with the thermal decomposition of those fibre samples. Therefore, in view of the overall result, the isolated DPFS-MCC could act as potential filler for reinforcing polymeric materials in composite field of applications.

目前的研究涉及从椰枣树（Phoenix dactylifera）的椰枣果实束茎（DPFS）中提取和分离微晶纤维素（MCC）。L.）通过综合化学方法。为了便于进行比较研究，每种经过DPFS处理的，DPFS制浆和DPFS-MCC的样品均通过各自的漂白，碱和酸水解处理来生产。获得的样品在结构，形态，元素，结晶度和热性能方面进行了表征。通过理化分析，傅立叶变换红外光谱（FTIR）和X射线衍射（XRD）显示了从DPFS处理到DPFS-MCC改善的纤维素晶体结构。形态分析表明，分离出的DPFS-纸浆和DPFS-MCC样品具有微原纤结构，这是通过一系列化学处理使纤维分解而实现的。此外，对于分离的DPFS-MCC，其结晶度也达到最高，为79.4％。进一步，与其他纤维样品相比，DPFS-MCC样品的高失重（84.15％），低残留重量（15.44％）和高分解温度（364.2°C）具有更好的热性能。另外，DSC分析显示出与那些纤维样品的热分解相一致的热行为。因此，从总体结果来看，分离出的DPFS-MCC在复合应用领域中可以作为增强聚合物材料的潜在填充剂。