Physical-Chemical and Mechanical Characterization of the Bast Fibers of <i>Triumfetta cordifolia</i> A.Rich. from the Equatorial Region of Cameroon

Abstract

The project consists in the implementation of a biocomposite based on tannin resin and natural rubber matrices with the bast fibres of Triumfetta cordifolia A.Rich. "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 1.477 g/cm 3 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%, showing a notable thermal stability around 235˚C with a peak thermal decomposition of

Physico-Chemical and Thermal Characterization of a Lignocellulosic Fiber, Extracted from the Bast of <i>Cola lepidota</i> Stem

“…The real density was determined with the technique of helium pycnometry as described in [10]. The obtained value was verified by an evaluation of the density by the simple Rule of Mixture (ROM) by applying Equation (1).…”

“…However, with the increase of demand in green materials combined to the decrease of growing space for these common plant fibers, and the race towards new tropical species which are accessible and at lower cost, some recent scientific works have been carried out in this field. Researches enabled to study new plant fibers such as those derived from pineapple leaves (PALF) [8], Rhectophyllum camerunense roots [1], Okra stems [9], Triumfetta cordifolia [10], Sida cordifolia [11], Arundo donax [7], Lygeum spartum [4], Coccinia grandis [12] for their use as reinforcement for composite materials.…”

Green Synthesis of Cellulosic Nanofiber in Enset Woven Fabric Structures via Enzyme Treatment and Mechanical Hammering

“…The TGA curve revealed that enset fiber remained thermally stable up to the decomposition temperature reaching to 227 o C while this temperature raised to 264 o C with medium and highly treated enset fibers. At lower decomposition temperature ranging from 38-115 o C of raw enset and treated fine enset fibers, only the moisture present on their components were evaporated [34]. The water loss of raw fiber and medium (15% w/v) and highly (20% w/v) treated enset fibers was realized around 9 % at the initial decomposition temperature of the fibers due to evaporation of water shown in Table 1.…”

Characterization of Tensile Properties of Cola lepidota Fibers

“…Thus, works have focused on the study of the properties of new plant fibers such as those derived from pineapple leaves [20], okra stems [21], Sida cordifolia [22], Arundo donax [23], Lygeum spartum [24], Coccinia grandis [25], Markhamia lutea [26], Erythrina variegate [27] and Albizia Saman [28]. Concerning plant fibers issued from tropical plants in Central, East and West African countries, some studies are related to the identification of properties of African star apple leaves [29], Bast fibers of Triumfetta cordifolia [30] and Rhectophyllum camerunense fibers [31][32][33]. This paper concerns the mechanical properties of plant fiber extracted from the bark of Cola lepidota (CL) plant.…”