Study of Agave Fiber-Reinforced Biocomposite Films
Study of Agave Fiber-Reinforced Biocomposite Films
复制标题
DOI：
10.3390/ma12010099
复制
发表时间：
2019-01-01
期刊：
影响因子：
3.4
通讯作者：
Montazami, Reza
中科院分区：
文献类型：
--
作者：
Annandarajah, Cindu;Li, Peng;Montazami, Reza
制备了不同含量比例的龙舌兰纤维增强的热塑性树脂（线性低密度聚乙烯（LLDPE）、高密度聚乙烯（HDPE）和聚丙烯（PP）），并对其力学性能、热性能、化学性能和形态进行了表征。龙舌兰纤维和薄膜的形态学特性，其特征在于通过扫描电子显微镜和填料和基体材料之间的化学相互作用的变化进行了研究，使用傅里叶变换红外光谱。填料和基质之间没有观察到显着的化学相互作用。通过测定复合材料的熔点和结晶度，考察了龙舌兰纤维对复合材料热性能的影响，并对模量和屈服强度参数进行了力学分析。虽然添加天然填料并不影响复合材料的整体热性能，但弹性模量和屈服应力与填料含量直接相关，并随着纤维含量的增加而增加。所有三种复合材料的最高弹性模量都是在20wt%龙舌兰纤维的情况下实现的。LLDPE、HDPE和PP的值分别增加了319.3%、69.2%和57.2%。当纤维含量为20wt%时，LLDPE的屈服应力最大，提高了84.2%;当纤维含量为30wt%时，HDPE和PP的屈服应力分别提高了52%和12.3%。
Thermoplastic resins (linear low-density polyethylene (LLDPE), high-density polyethylene (HDPE), and polypropylene (PP)) reinforced by different content ratios of raw agave fibers were prepared and characterized in terms of their mechanical, thermal, and chemical properties as well as their morphology. The morphological properties of agave fibers and films were characterized by scanning electron microscopy and the variations in chemical interactions between the filler and matrix materials were studied using Fourier-transform infrared spectroscopy. No significant chemical interaction between the filler and matrix was observed. Melting point and crystallinity of the composites were evaluated for the effect of agave fiber on thermal properties of the composites, and modulus and yield strength parameters were inspected for mechanical analysis. While addition of natural fillers did not affect the overall thermal properties of the composite materials, elastic modulus and yielding stress exhibited direct correlation to the filler content and increased as the fiber content was increased. The highest elastic moduli were achieved with 20 wt % agave fiber for all the three composites. The values were increased by 319.3%, 69.2%, and 57.2%, for LLDPE, HDPE, and PP, respectively. The optimum yield stresses were achieved with 20 wt % fiber for LLDPE increasing by 84.2% and with 30 wt % for both HDPE and PP, increasing by 52% and 12.3% respectively.