Article Per Year (5 Year)
p-Index From 2020 - 2025
2.162
P-Index
This Author published in this journals
All Journal Jurnal Teknologi Pertanian Andalas METAL : Jurnal Sistem Mekanik dan Termal Journal of Applied Agricultural Science and Technology Journal of Fibers and Polymer Composites
Firman Ridwan
Jurusan Teknik Mesin, Universitas Andalas
Agriculture, Biological Sciences & Forestry Automotive Engineering Computer Science & IT Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Journal of Applied Agricultural Science and Technology

 1 
Lignin Degradation of Kapok Fiber (Ceiba pentandra, L) with Different Times of Pulping Fransiska Angelina Rezekinta; Anwar Kasim; Edi Syafri; Irawati Chaniago; Firman Ridwan
Journal of Applied Agricultural Science and Technology Vol. 7 No. 3 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i3.186

Abstract

Lignin reduced the adhesion between the polymeric matrix and natural reinforcement in composite materials by its hydrophobic characteristic. Removal of lignin can be a solution to improve fiber function in composite use. This study aimed to determine the degradation of lignin at different times of pulping. The soda process was conducted at 60, 70, 80, 90, and 100 minutes of pulping using heat in a room atmosphere. Yields, lignin content, and lignin spectrum (FT-IR analysis) were measured.  The result showed the highest degradation of lignin was in 100 minutes of pulping with 80.34% lignin degradation and 3.57% lignin left in fibers. However, the yield of fibers decreased with increasing pulping time due to lignin removal. 100 minutes of pulping time showed the highest loss of fiber yield. This study showed the best pulping time for kapok fiber is 100 minutes with 3.57 % lignin remaining in the pulp.
The Effect of Using Cellulose Nanofiber from Kapok (Ceiba pentandra, L) as Reinforcement on The Properties of Recycled Papers Rezekinta, Fransiska Angelina; Kasim, Anwar; Syafri, Edi; Ridwan , Firman; Chaniago , Irawati; Ichiura, Hideaki
Journal of Applied Agricultural Science and Technology Vol. 8 No. 4 (2024): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v8i4.327

Abstract

Recycling is important for achieving environmentally sustainable products and waste reduction. The trend has led to the addition of reinforcement to recycling process to ensure the effective usage of wasted papers. Therefore, this study was conducted to determine the effect of using cellulose nanofiber (CNF) synthesized from kapok fibers as reinforcement in recycled papers. CNF was applied at different concentrations of 2, 4, 6, 8, and 10% of recycled paper production and the analysis was conducted by testing tensile index, density, and brightness. Moreover, X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), and UV-Vis analysis were used to determine the characteristics of the paper. The results showed that CNF addition influenced tensile index, brightness, and density of recycled papers. This was observed from an increase in tensile strength by up to 76.32% and density at approximately 0.58 g/cm3 for 10% CNF addition. Meanwhile, the brightness level was reduced due to the compact nature of paper produced. The trend led to the conclusion that the addition of CNF could impact the characteristics of recycled papers.
Co-Authors Abral, Hairul Ade Hendra Agusto , Dean Bilalwa Agusto, Dean Bilalwa Aminuyati Angelina Rezekinta Anwar Kasim Anwar Kasim Arif Novriheldi Benny Dwika Leonanda Chaniago , Irawati Diki Zuhury Edi Syafri Edi Syafri Eka Satria Ezi Puspita Dewi Fico Trianda Ravelli Fransiska Angelina Rezekinta Gusriwandi Gusriwandi Gusriwandi Hendery Dahlan, Hendery Ichiura, Hideaki Irawati Chaniago Muhammad Yusra R Mutya Ratna Wardani Refki Harvendri Rezekinta, Angelina Rezekinta, Fransiska Angelina Ryan Rahman Syafri, Edi Wismalqi Wismalqi, Wismalqi Yul Hizhar Zakky, Muhammad Ammar Zuliantoni, Zuliantoni