Zobrazeno 1 - 10
of 106
pro vyhledávání: '"Hairul Abral"'
Autor:
Dieter Rahmadiawan, Shih-Chen Shi, Hairul Abral, Mohammad Khalid Ilham, Eni Sugiarti, Ahmad Novi Muslimin, R.A Ilyas, Remon Lapisa, Nandy Setiadi Djaya Putra
Publikováno v:
Journal of Natural Fibers, Vol 21, Iss 1 (2024)
ABSTRACTThe preparation method of cellulose films plays a vital role in their properties. This work aims to characterize 2, 2, 6, 6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized bacterial cellulose powder (TOBCP) films prepared with three different m
Externí odkaz:
https://doaj.org/article/1698b3fc91404203be5765f9c8bad0ee
Autor:
Dieter Rahmadiawan, Hairul Abral, Ilham Chayri Iby, Hyun-Joong Kim, Kwang-Hyun Ryu, Ho-Wook Kwack, Muhammad Razan Railis, Eni Sugiarti, Ahmad Novi Muslimin, Dian Handayani, Khiky Dwinatrana, Shih-Chen Shi, Rahadian Zainul, Rahmat Azis Nabawi
Publikováno v:
Heliyon, Vol 10, Iss 10, Pp e30748- (2024)
The physical and mechanical properties of biopolymers can be improved by heating technologies. In this research, we improved the properties of Polyvinyl alcohol (PVA)/Uncaria gambir extract (UGE) blend films by post-heating method. After post-heating
Externí odkaz:
https://doaj.org/article/53d43aa657004932b52ec0980273f9c4
Autor:
Dieter Rahmadiawan, Hairul Abral, Mohammad Khalid Ilham, Poppy Puspitasari, Rahmat Azis Nabawi, Shih-Chen Shi, Eni Sugiarti, Ahmad Novi Muslimin, Devi Chandra, R.A. Ilyas, Rahadian Zainul
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 5566-5575 (2023)
The production of UV-resistant films from biomaterials is currently an active field of research. ZnO nanoparticle polymer fillers have been found to improve UV-light opacity. However, using ZnO as a filler is relatively expensive and time-consuming f
Externí odkaz:
https://doaj.org/article/9ffdf1c829f44611872a6e48d6f86fd0
Autor:
Dieter Rahmadiawan, Hairul Abral, Shih-Chen Shi, Tzu-Teng Huang, Rahadian Zainul, Ambiyar, Hendri Nurdin
Publikováno v:
Tribology in Industry, Vol 45, Iss 2, Pp 367-374 (2023)
Polyvinyl Alcohol/Uncaria Gambir Extract (PVA/UG) composite provides good UV light protection and antibacterial, tensile, and thermal properties. To continue our previous research, the tribological properties of PVA, PVA/BA, PVA/UG, and PVA/UG with h
Externí odkaz:
https://doaj.org/article/fa1d12918fd0484cb7984347f24b5c10
Autor:
Dieter Rahmadiawan, Zahrul Fuadi, Rudi Kurniawan, Hairul Abral, Febrian Ilhamsyah, Andril Arafat, Rifelino, Budi Syahri, Eko Indrawan
Publikováno v:
Tribology in Industry, Vol 44, Iss 4, Pp 584-591 (2022)
In this work, a novel anti-corrosion water-based lubricant is prepared. Carboxymethyl cellulose and Uncaria Gambir Extract, all in powder form, were dispersed in water. Corrosion, stability, and tribology test with pin-on-disk reciprocating tribomete
Externí odkaz:
https://doaj.org/article/62b75863f680421a9b9c2e5ee2dc2a9c
Autor:
Hairul Abral, Muhammad Ikhsan, Dieter Rahmadiawan, Dian Handayani, Neny Sandrawati, Eni Sugiarti, Ahmad Novi Muslimin
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 2193-2202 (2022)
Pure polyvinyl alcohol (PVA) has some weaknesses, such as low values of ultraviolet (UV)-light protection, anti-bacteria, tensile strength, and thermal resistance. We have found a new additive, i.e., Uncaria gambir (UG) extract, added to PVA to impro
Externí odkaz:
https://doaj.org/article/3e9591f0c20c400bbe8e2944e0fdbee5
Autor:
Pui San Khoo, R. A. Ilyas, M. N. A. Uda, Shukur Abu Hassan, A. H. Nordin, A. S. Norfarhana, N. H. Ab Hamid, M. S. A. Rani, Hairul Abral, M. N. F. Norrrahim, V. F. Knight, Chuan Li Lee, S. Ayu Rafiqah
Publikováno v:
Polymers, Vol 15, Iss 14, p 3114 (2023)
Over the past three decades, chemical and biological water contamination has become a major concern, particularly in the industrialized world. Heavy metals, aromatic compounds, and dyes are among the harmful substances that contribute to water pollut
Externí odkaz:
https://doaj.org/article/709f027e972f449f95cb4ab3e3aef37b
Autor:
Hairul Abral, Melati Krista Chairani, Muhammad Dinul Rizki, Melbi Mahardika, Dian Handayani, Eni Sugiarti, Ahmad Novi Muslimin, S.M. Sapuan, R.A. Ilyas
Publikováno v:
Journal of Materials Research and Technology, Vol 11, Iss , Pp 896-904 (2021)
This work investigates the effects of two different levels of humidity (RH 50% and 75%) on the characterizations of compressed bacterial cellulose nanopaper film. The film was prepared with different heat treatments; compression at 25 °C for 72 h an
Externí odkaz:
https://doaj.org/article/fb02cbe43fd343f8ad60d76905285482
Autor:
Zahrul Fuadi, Dieter Rahmadiawan, Rudi Kurniawan, Farid Mulana, Hairul Abral, Nasruddin Nasruddin, Mohammad Khalid
Publikováno v:
Frontiers in Mechanical Engineering, Vol 8 (2022)
The demand for bio-degradable lubricants is continuously increasing due to environmental concerns. One of the methods to achieve the bio-degradability property of lubricants is by using nanoparticles from bio-resources as additives in bio-degradable
Externí odkaz:
https://doaj.org/article/655a84a798ec472b9c9d1f5831a2a6aa
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 4, Pp 8754-8765 (2020)
Cellulose-based nanopaper with high moisture and thermal resistance and high tensile properties has many applications in the food packaging industry, electronics, and biosensors. The objective of the present work is to produce and characterize the di
Externí odkaz:
https://doaj.org/article/302131a9666d416da1a0d7e5d69c686d