ORCID Profile
0000-0003-3690-1217
Current Organisations
University of Tokyo
,
Institut Pertanian Bogor Fakultas Teknologi Pertanian
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Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2MA00642A
Abstract: Cellulose-based wound dressings are increasingly in demand due to their biocompatibility and extracellular matrix (ECM) mimicking properties.
Publisher: Walter de Gruyter GmbH
Date: 29-10-2019
Abstract: The potential use of sago pith waste, bamboo, and water hyacinth based on the characteristics of raw materials to make liner paper were studied. The analysis conducted covered the analysis of physical characteristics, chemical components, morphology (SEM), functional groups (FTIR), and crystallinity (XRD). The pulp from the three kinds of fiber was molded into paper with a certain formulation. The parameters of pulp and paper observed covered the alkaline consumption, Kappa number, pulp yield, and paper physical characteristics (grammage, bursting strength, Ring Crush Test/RCT, water content, and water absorption). The chosen paper was the paper whose characteristics resembled the quality parameter of liner paper used by the paper industry and the standard in accordance with the Indonesia’s National Standard (SNI) 14-0095-1996. The microscope images showed that the three said raw materials have long fibers: sago pith waste and water hyacinth has fibers measuring respectively 1.89±0.90 and 2.07±0.39 mm, resembling hard wood, whereas bamboos have longer fibers measuring 4.61±0.72 mm, resembling soft wood. Bamboos have the best fiber composition and characteristics for pulp and liner paper. The two paper formulas that meet the criteria for liner paper are bamboo and bamboo+water hyacinth.
Publisher: IOP Publishing
Date: 09-2020
DOI: 10.1088/1757-899X/935/1/012043
Abstract: The potential use of sago pith waste to produce activated carbon were studied. This study examined the effect of KOH or KMnO4 as activating agent on producing ball milled sago pith waste-based activated carbon. Activation was done using KOH or KMnO 4 at 2.5% and 5% concentration, heated in a reactor to reach 800°C for 1 hour, and then continue steamed for 1 hour. S le size was reduced to nm using high-energy ball-milling at 500 rpm for 150 min. Analysis included the yield, water content, ash content, volatile matter, burnt-off weight percentage, morphology analysis, functional groups analysis (Fourier Transform Infrared Spectroscopy, FTIR), crystallinity analysis (X-ray diffraction, XRD), and surface area analysis (Brunauer, Emmelt, and Teller/BET). Ball-milling treatment produced sago pith waste activated carbon of 585.40 nm and a particle distribution index (PDI) score of 0.673. The activated carbon that met the criteria of SNI 06-3730-1995 for moisture content and volatile matter were sago pith waste with activating agent KMnO 4 5%, and sago pith waste with activating agent KMnO4 5% & milling. The study showed the activated carbon that had the best Iodine number was sago pith waste with activating agent KOH 2.5% (619.40 mg/g). The activated carbon that met the criteria of SNI 06-3730-1995 for methylene blue adsorbtion capacity was sago pith waste with activating agent KOH 2.5% & milling and sago pith waste with activating agent KOH 5% & milling. The activated carbon with the highest surface area was sago pith waste with activating agent KOH 2.5% & milling. The best activated carbon based on all parameters was sago pith waste with activating agent KOH 2.5% & milling.
Publisher: Science Alert
Date: 15-06-2015
Publisher: Wiley
Date: 14-06-2021
Abstract: Kapok fiber ( Ceiba pentandra ) is a potential source of cellulose, but its utilization is still minimal. This study aims to isolate nanocrystalline cellulose (NCC) from kapok fibers using acid hydrolysis at various times and characterize its properties as reinforcement for alginate‐nanocrystalline cellulose (Alg‐NCC) hydrogel beads. NCCs are characterized using various techniques, and hydrogel beads are characterized by syneresis and strength (TPA). Variations in hydrolysis time cause changes in functional groups, decrease length and diameter, increase degree of crystallinity, and thermal stability. Nanocrystalline cellulose isolation from BKF by chemical hydrolysis is better done at 60% sulfuric acid concentration, for 50 min to produce a yield of 38.92%, L / d aspect ratio ranges from 8.53 to 12.23, degree of crystallinity 71.00%, and thermal stability with maximum degradation temperature 298.69 °C. The incorporation of NCC on the Alg hydrogel beads leads to increase hardness 67.70% and decrease syneresis 4.14%. Thus, NCC can be used as a reinforcement agent because it has been shown to improve the physical, mechanical, and thermal properties of Alg‐NCC hydrogel beads. Alg‐NCC hydrogel beads have the potential to be widely applied in various fields.
Publisher: IOP Publishing
Date: 11-2019
DOI: 10.1088/1755-1315/355/1/012109
Abstract: Kapok is a source of natural fiber in addition to cotton, which availability is abundant and contain high cellulose but not been utilized optimally. This study aimed to determine the optimal conditions of sulfuric acid concentration and hydrolysis time in the production process of nanocrystalline cellulose (NCC) from kapok fiber. The research was conducted in several stages, namely the delignification with alkali hydrothermal, bleaching with alkaline hydrogen peroxide agents, isolation with sulfuric acid solutions, and NCC characterization. The optimization used Response Surface Methodology (RSM) with Central Composite Design (CCD), which consisted of two factors, namely H 2 SO 4 concentration and hydrolysis time. The optimized parameter was the crystallinity degree of the NCC. NCC characterization included functional group analysis with Fourier Transform Infrared Spectroscopy (FTIR), surface profiles and dimensions by Scanning Electron Microscopy (SEM), and Transmission Electron Microscopy (TEM). The results showed that the optimum condition of NCC isolation from kapok fiber was obtained at 54.46% (b/b) H 2 SO 4 with hydrolysis time of 48.96 minutes, resulting in a maximum degree of crystallinity of 71.8%. The hydrolysis process with H 2 SO 4 caused a change in the NCC functional group. NCC had a diameter of about 11.2 ± 2.63 nm and high thermal stability that potential for various composite materials
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D1QM00390A
Abstract: 3D printed cellulose can be applied to various fields, such as packaging, paper, construction, automotive and aerospace, separator, biomedical, electronic, sensor, and living ink applications.
Location: Indonesia
No related grants have been discovered for FARAH FAHMA.