Ngouobe Japhet Noubiap, Lecompte Thibaut, Ngohe-Ekam Paul Salomon, Penlap Landry Hervé, Tiombou Micheal Tiendjou, Nfornkah Barnabas Neba, Meukam Pierre, Kanmogne Abraham, Nganhou Jean, Bailleul Jean-Luc, Kervoelen Antoine, Towa Adrien Simplice, Hagbe Ntod Marcel Bertrand, Tebo Ivo Takwe, Bouba Bapetel Djaratou, Beyrle Matthias
University of Yaoundé 1, National Advanced School of Engineering of Yaoundé, L3E, P.O. Box 8390, Yaoundé, Cameroon.
University of South Brittany, UMR, CNRS 6027, IRDL, F-56100, Lorient, France.
Heliyon. 2024 Jun 8;10(13):e32668. doi: 10.1016/j.heliyon.2024.e32668. eCollection 2024 Jul 15.
The Cameroon has two bamboo species indigenous to Africa (the and the ), and one largely exotic species, . However, little on their physical characteristics and strength for the composites materials applications is known for these two indigenous bamboos species in Cameroon. Therefore, in this study, emphasis was laid on the alpine bamboo , to evaluate its potential for biocomposites applications. with ages ranging from 1 to 3 years, 4-5 years, and 7 years were characterized. The mechanical and physical properties of these three age ranges were compared. In the first place, the surface texture of the fibers was examined by scanning electron microscopy. Afterwards, chemical treatment was performed on the fibers with 1 % NaOH. In addition, the chemical bonds of the molecules (functional groups) were identified by Fourier transform infrared spectra (FTIR) and the thermal properties of the fibers were examined with a thermogravimetric analyzer. Furthermore, the fibers density was assessed using the Rilem protocol and a tensile testing machine was used to determine the mechanical properties of the treated fibers with 1 % of NaOH. Finally, a dynamic mechanical analysis of 7-year-old fibers was carry out. The results indicate that the Young's modulus of treated fibers with ages ranging from 1 to 3 years, 4-5 years, and 7 years were around 18 GPa, 10 GPa, and 14 GPa, respectively. In summary, this study underlines two primary points: (1) providing a platform for researchers to better understand the influence of age on the physical and mechanical properties of indigenous bamboo ; and (2) providing a platform to validate suitable designs of biocomposites materials with .
喀麦隆有两种原产于非洲的竹子品种（[此处原文缺失品种名称]和[此处原文缺失品种名称]），以及一种主要为外来品种的竹子，[此处原文缺失品种名称]。然而，对于喀麦隆的这两种本土竹子品种，人们对其物理特性以及在复合材料应用方面的强度了解甚少。因此，在本研究中，重点关注了高山竹[此处原文缺失品种名称]，以评估其在生物复合材料应用方面的潜力。对年龄范围为1至3年、4至5年和7年的[此处原文缺失品种名称]进行了特性表征。比较了这三个年龄范围竹子的力学和物理性能。首先，通过扫描电子显微镜检查纤维的表面纹理。之后，用1%的氢氧化钠对纤维进行化学处理。此外，通过傅里叶变换红外光谱（FTIR）识别分子的化学键（官能团），并用热重分析仪检查纤维的热性能。此外，使用里氏试验方法评估纤维密度，并使用拉伸试验机测定用1%氢氧化钠处理过的纤维的力学性能。最后，对7年生的[此处原文缺失品种名称]纤维进行了动态力学分析。结果表明，年龄范围为1至3年、4至5年和7年的经处理纤维的杨氏模量分别约为18吉帕、10吉帕和14吉帕。总之，本研究强调了两个要点：（1）为研究人员提供一个平台，以更好地了解年龄对本土竹子[此处原文缺失品种名称]物理和力学性能的影响；（2）提供一个平台，以验证使用[此处原文缺失品种名称]的生物复合材料的合适设计。
