Physical-Chemical and Mechanical Characterization of the Bast Fibers of <i>Triumfetta cordifolia</i>***. from the Equatorial Region of Cameroon
Physical-Chemical and Mechanical Characterization of the Bast Fibers of <i>Triumfetta cordifolia</i>***. from the Equatorial Region of Cameroon作者机构：Department of Mechanical Engineering ENSET University of Douala Douala Cameroon Laboratory of Mechanics University of Douala Cameroon Douala Cameroon CETELOR University of Lorraine CETELOR/27 rue Philippe SEGUIN Epinal France Laboratory of Mechanics Materials and Modelization National School of AGRO-Industrial Sciences (ENSAI) Physics Application and Engineering Ngaoundere University Ngaoundere Cameroon Laboratory of Mechanics Materials Structures and Integrated Manufacturing National Advanced School of Engineering University of Yaounde 1 Yaounde Cameroon
出 版 物：《Journal of Minerals and Materials Characterization and Engineering》 (矿物质和材料特性和工程（英文）)
年 卷 期：2020年第8卷第4期
页 面：163-176页
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
主 题：Triumfetta cordifolia Fibers Morphology Chemical Analysis Thermal Degradation Mechanical Behavior
摘 要：The project consists in the implementation of a biocomposite based on tannin resin and natural rubber matrices with the bast fibres of Triumfetta cordifolia ***.“Okong from the equatorial region of Cameroon as reinforcement. A study of this still little known fibre is necessary. This paper evaluates the physico-chemical and mechanical characteristics of the fibers. The fibers are extracted by us. A series of experiments is conducted for this purpose: morphological observation with a scanning electron microscope (SEM);density evaluation with a helium pycnometer;absorption rate evaluation according to the protocol available in the literature, Fourier Transform Infrared Spectrometry (FT-IR), chemical composition evaluation according to ASTM 1972 and ASTM 1977 standards, thermogravimetric analysis (TGA) and tensile tests on fiber bundles according to NF T25-501-3. The results show that the fiber is made up of several elementary fibers with oval cross-sections. A density of 1.477g/cm3 close to that of hemp. These fibers have a water absorption rate of 342.5%, which correlates with the presence of free hydroxyl functional groups obtained from the spectrometry study (FT-IR). Chemical analysis reveals that the fiber is made up of celluloses (44.4%), hemicelluloses (30.8%), lignins (18.9%), pectins (3.3%), waxes (0.5%) and minerals (2.1%). In addition, we learn that the fibers studied dehydrate at 11.49%, showinga notable thermal stability around 235°C with a peak thermal decomposition of cellulose located at 420°C. In terms of mechanical behaviour, the results reveal that the fibers offer a Young’s modulus in traction of 12.4 ± 6.9 GPa, a tensile strength of 526 ± 128 MPa and an elongation at break of 2.25%. The information thus obtained makes it possible to place these fibers in the same fiber group as flax and jute. They could therefore be used for the same types of applications. They also inform us that these fibers can withstand the temperat
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