从洋麻树皮中提取新型天然纤维素纤维的特性研究。
Characterization of a novel natural cellulosic fiber from Prosopis juliflora bark.
机构信息
Department of Mechanical Engineering, Kamaraj College of Engineering and Technology, Virudhunagar 626001, Tamil Nadu, India.
出版信息
Carbohydr Polym. 2013 Feb 15;92(2):1928-33. doi: 10.1016/j.carbpol.2012.11.064. Epub 2012 Dec 1.
Natural fibers from plants are ideal choice for producing polymer composites. Bark fibers of Prosopis juliflora (PJ), an evergreen plant have not been utilized for making polymer composites yet. Hence, a study was undertaken to evaluate their suitability as a novel reinforcement for composite structures. PJ fiber (PJF) was analyzed extensively to understand its chemical and physical properties. The PJF belonged to gelatinous or mucilaginous type. Its lignin content (17.11%) and density (580 kg/m(3)) were relatively higher and lower, respectively in comparison to bark fibers of other plants. The free chemical groups on it were studied by FTIR and XRD. It had a tensile strength of 558±13.4 MPa with an average strain rate of 1.77±0.04% and microfibril angle of 10.64°±0.45°. Thermal analyses (TG and DTG) showed that it started degrading at a temperature of 217 °C with kinetic activation energy of 76.72 kJ/mol.
植物天然纤维是生产聚合物复合材料的理想选择。洋麻的树皮纤维（Prosopis juliflora，简称 PJ）是一种常绿植物，尚未被用于制造聚合物复合材料。因此，进行了一项研究，以评估其作为新型增强材料用于复合材料结构的适用性。对 PJ 纤维（PJF）进行了广泛分析，以了解其化学和物理性质。与其他植物的树皮纤维相比，PJF 属于胶状或粘胶状纤维，其木质素含量（17.11%）较高，密度（580kg/m3）较低。通过傅里叶变换红外光谱（FTIR）和 X 射线衍射（XRD）研究了其表面的游离化学基团。它的拉伸强度为 558±13.4MPa，平均应变速率为 1.77±0.04%，微纤维角为 10.64°±0.45°。热分析（TG 和 DTG）表明，它在 217°C 时开始降解，动力学活化能为 76.72kJ/mol。
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