Manimaran P, Vignesh V, Khan Anish, Pillai G Pitchayya, Nagarajan K J, Prithiviraj M, Al-Romaizan Abeer Nasser, Hussein Mahmoud A, Puttegowda Madhu, Asiri Abdullah M
Department of Mechanical Engineering, Karpagam Institute of Technology, Coimbatore 641105, Tamil Nadu, India.
Department of Mechanical Engineering, Sethu Institute of Technology, Kariapatti 626115, Tamilnadu, India.
Int J Biol Macromol. 2022 Dec 1;222(Pt B):1840-1851. doi: 10.1016/j.ijbiomac.2022.09.273. Epub 2022 Oct 2.
In recent years, efforts have been made to reduce deforestation to conserve the ecosystem. In the current scenario, agro-cultivated products are used instead of wood for engineering applications. Thus, natural lignocellulosic fibres are used as a reinforcing material and have been extremely attractive to industries and the scientific community during the past few decades. This study aimed to examine the use of natural fibres extracted from Typha angustata grass as reinforcement in polymer matrix composites. The density of the fibres was 1.015 g/cc. Chemical analysis confirmed that T. angustata fibres (TAFs) have a cellulose content of 73.54 wt%, a hemicellulose content of 10.11 wt%, a lignin content of 6.23 wt% and a wax content of 0.23 wt%. The crystallinity index (65.16 %) and crystalline size (6.40 nm) were identified by X-ray diffraction (XRD) analysis. The presence of functional groups in the TAFs was examined by employing Fourier-transform infrared spectroscopy (FTIR). The presence of cellulose at peak intensities of C2, C3 and C5 in the TAFs was confirmed using C nuclear magnetic resonance (NMR) spectroscopy. The single fibre tensile test revealed that the tensile strength was 665 ± 7 MPa and Young's modulus was 27.45 ± 3.46 GPa. The thermal stability of the TAFs was examined by thermogravimetric analysis (TGA), and the prominent peak was observed at 298.48 °C, with a kinetic activation energy of 67.99 kJ/mol. The surface roughness of the fibres was analysed by atomic force microscopy (AFM) with an accuracy of 1 nm. The above-mentioned outcomes indicated that the TAFs have desirable properties that are comparable to existing natural fibres and suggested to be utilised as the possible reinforcement to fabricate the fibre-reinforced polymer matrix composites.
近年来，人们致力于减少森林砍伐以保护生态系统。在当前情况下，工程应用中使用农业种植产品替代木材。因此，天然木质纤维素纤维被用作增强材料，在过去几十年里受到了工业界和科学界的极大关注。本研究旨在考察从狭叶香蒲草中提取的天然纤维作为聚合物基复合材料增强材料的应用。纤维密度为1.015 g/cc。化学分析证实，狭叶香蒲纤维（TAF）的纤维素含量为73.54 wt%，半纤维素含量为10.11 wt%，木质素含量为6.23 wt%，蜡含量为0.23 wt%。通过X射线衍射（XRD）分析确定了结晶度指数（65.16%）和晶体尺寸（6.40 nm）。采用傅里叶变换红外光谱（FTIR）检测TAF中官能团的存在。使用碳核磁共振（NMR）光谱证实了TAF中C2、C3和C5峰强度处纤维素的存在。单纤维拉伸试验表明，拉伸强度为665±7 MPa，杨氏模量为27.45±3.46 GPa。通过热重分析（TGA）检测TAF的热稳定性，在298.48℃观察到突出峰，动力学活化能为67.99 kJ/mol。通过原子力显微镜（AFM）分析纤维的表面粗糙度，精度为1 nm。上述结果表明，TAF具有与现有天然纤维相当的理想性能，建议用作制备纤维增强聚合物基复合材料的可能增强材料。
