Physical, chemical, thermal and mechanical characterization of coconut fibers from the Pacific Coast of Cauca with potential as reinforcement of polymeric matrix composite materials
Coconut fiber is a by-product that is not properly managed, generating environmental and economic consequences, because its accumulation disrupts ecosystem dynamics and productive activities. One of the strategies developed to mitigate its impact is the incorporation of its fibers as reinforcement in composite materials. In this context, the fibers of three varieties of coconut from the Pacific Coast of the Cauca were studied, with the aim of evaluating their feasibility as a reinforcement matrix through stress resistance techniques, spectroscopy (FTIR), water adsorption, thermogravimetric (tga), granulometry and aspect ratio, finding that the highest values in voltage resistance, elasticity module and elongation at the breakpoint were 302,68 MPa, 5,82 and 28,18 % respectively. In spectroscopy, spikes between 3340 and 897 cm-1 were observed indicating the presence of cellulose, lignin, cherries and hemicellulose. Water adsorption for the 3 samples was between 98 and 104 % without significant differences. In tga, two stages of degradation were detected, the initial one with peak peaks for the three varieties between 44,47 °C (A1), 50,62 °C(A2) and 39,50 °C/A3, in a range of 24 to 125 °C, then the peak was between 190 °C to 390 °C. In this range there was a weight loss of approximately 20 %. The aspect ratio of the three varieties between thorns 40 and 60 was greater than 10, indicating that the fiber is suitable for use as reinforcement material in composite materials. In conclusion, the three fibers presented excellent properties and met the conditions of thermal stability and mechanical resistance which makes them suitable for implementation as a reinforcement matrix in the manufacture of composite materials.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad del Cauca -Facultad de ciencias Agrarias
2024
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| Online Access: | https://revistas.unicauca.edu.co/index.php/biotecnologia/article/view/2291 |
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