Effect of Fiber Morphology and Elemental Composition of Ananas comosus Leaf on Cellulose Content and Permittivity

Abstract

The fiber morphology and elemental composition of pineapple leaf fibers were analyzed to understand their effect on the cellulose content and permittivity value. Cellulose fiber was extracted from pineapple leaf via the alkaline treatment method, and the content was determined using the Kurschner-Hanack method. The permittivity value of the developed cellulose fiber was measured based on the waveguide technique in the G-band. The surface morphology of the developed fiber was examined with scanning electron microscopy. Meanwhile, energy dispersive X-ray (EDX) spectroscopy was used to identify the elemental composition of the pineapple leaf fibers. The findings were that the cellulose fibers with the least diameter and distance between fibers exhibited the highest permittivity value, which was 1.85. The EDX analysis demonstrated that carbon was the commonest elemental in all fibers, and was 55 wt.% of the total element composition. Furthermore, the results showed that the permittivity value increased as the carbon composition increased, and decreased as the oxygen composition increased. Hence, the morphological and elemental studies of the cellulose fiber are useful in determining the permittivity value of the cellulose fiber for material development. The high permittivity value of the pineapple leaf fibers is believed to have great potential for use in electronic components.

Fabrication of Cellulose Powder Dielectric Composite Material using Pineapple Leaves Fiber

“…The experiment was conducted according to the setup by following the standard order (STD), where all the factors were randomized. The TLFA technique was initially used to analyze important factors that could influence the fabrication of the dielectric material in our previous work [32]. In TLFA, the pulping time and the weight of the powdered cellulose from pineapple leaves were selected as the contributing factors that affect the increment in permittivity value [32].…”

“…The TLFA technique was initially used to analyze important factors that could influence the fabrication of the dielectric material in our previous work [32]. In TLFA, the pulping time and the weight of the powdered cellulose from pineapple leaves were selected as the contributing factors that affect the increment in permittivity value [32]. The two selected factors, which are pulping time and the weight of the powdered cellulose from pineapple leaves, were chosen as factors in this experiment because these factors are showing significant changes.…”

“…The two selected factors, which are pulping time and the weight of the powdered cellulose from pineapple leaves, were chosen as factors in this experiment because these factors are showing significant changes. As the pulping time increases, the mixtures get more concentrated, which leads to an increase in the permittivity value of the material [32]. Meanwhile, another factor, which is the weight of the powdered cellulose from pineapple leaves, also shows a significant effect on the increment in permittivity value.…”

“…Meanwhile, another factor, which is the weight of the powdered cellulose from pineapple leaves, also shows a significant effect on the increment in permittivity value. When the weight of the powder increases, the amount of carbon in the fabricated dielectric composite material also increases, which at the same time increases the permittivity value of the fabricated dielectric composite material [32].…”

“…For the pulping time factor, the plus alpha used was 50 minutes and the minus alpha was 20 minutes, while for the factor weight of pineapple leaf powder, the plus alpha was 9 grams and the minus alpha was 1 gram. Even though the ratio of pineapple leaves to distilled water (PL:DW) and the heating option were analyzed in the TLFA result in [32], these two factors did not show a significant impact on the increment of permittivity values. The value of each run with its respective responses is shown in Table 2.…”