Article
Chemistry, Multidisciplinary
Azin Adibi, Leonardo Simon, Christian Lenges, Tizazu H. Mekonnen
Summary: Designed polysaccharides obtained from the enzymatic polymerization of sucrose are used as sustainable and functional reinforcing additives for rubber composites. In this study, epoxidized natural rubber (ENR) is melt-grafted onto the polysaccharide to enhance material properties. The resulting ENR-glucan composite using dicumyl peroxide (DCP) provides improved properties and can be used as a functional masterbatch for general NR composite formulations.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Materials Science, Paper & Wood
Xueli Yang, Li Yang, Xiaodan Teng, Qifang Wang, Yueqiong Wang, Chuanhui Xu
Summary: This study reports a strengthened biobased epoxidized natural rubber/adipic acid/cellulose nanocrystal (ENR/AA/CNC) composite, in which biobased adipic acid (AA) forms a network with reversible ester bonds with ENR, allowing the composite to rearrange its topology at high temperatures and exhibit reprocessing capabilities. Additionally, the cellulose nanocrystals (CNCs) form hydrogen bonds with ENR chains, enhancing the mechanical performance of the ENR/AA/CNC composite.
Article
Materials Science, Multidisciplinary
Nuttapon Suppanucroa, Adun Nimpaiboon, Kattareen Boonchuay, Arnon Khamkeaw, Muenduen Phisalaphong
Summary: In this study, a green composite NR-C sponge with high mechanical properties and efficient water absorption capacity was successfully fabricated using sodium alginate as a dispersing agent. The addition of sodium alginate promoted cellulose fiber dispersion in the natural rubber matrix and resulted in highly porous sponges with improved mechanical properties and higher hydrophilicity. The NR-C sponge supplemented with cellulose and sodium alginate showed significantly higher compressive stress and modulus of elasticity, as well as increased water absorption capacity. Furthermore, the NR-C sponge exhibited a higher biodegradation rate in soil and could be used in various applications, including agriculture and biomedical fields.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biochemistry & Molecular Biology
Tipapan Dumkor, Sirilux Poompradub
Summary: This study prepared microcrystalline cellulose (MCC) from Para rubber leaves through mechanical and chemical treatments, and then converted it into MCC-graft-polyacrylate (MCC-g-PA) via radical polymerization. MCC-g-PA was used as an additive in PA superabsorbent polymers (SAP) and showed improved water absorbency due to the presence of hydroxyl and carboxylate groups. Furthermore, MCC-g-PA/PA SAP exhibited similar reusability to commercial SAP and could be degraded by cellulase and laccase enzymes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Supachok Tanpichai, Chutidech Thongdeelerd, Tamonwan Chantaramanee, Anyaporn Boonmahitthisud
Summary: CNFs were successfully incorporated into ENR nanocomposites, leading to superior mechanical properties. The strong interaction between CNFs and ENR resulted in efficient stress transfer, significantly enhancing the tensile strength and Young's modulus of the nanocomposites. The addition of CNFs also improved the oil resistance of the nanocomposites. Therefore, CNFs have great potential as a reinforcing agent in various engineering applications of rubber materials.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Xueli Yang, Yuanming Guo, Lingli Kong, Junjie Lu, Baofeng Lin, Chuanhui Xu
Summary: A bio-based epoxidized natural rubber composite reinforced by sodium carboxymethyl cellulose was prepared. The composite exhibited improved mechanical properties and self-healing ability due to the introduction of reversible disulfide bonds.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Materials Science, Ceramics
Sisi Shang, Xin Ye, Xing Jiang, Qi You, Ya Zhong, Xiaodong Wu, Sheng Cui
Summary: The study developed novel and low-cost cellulose/attapulgite composite aerogels with high hydrophobicity, good thermal stability, and high compressive strength. These composite aerogels can be used as absorbents for oil spills, showing promising potential for oil cleaning applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Composites
Zhichao Zhang, Xin Liu, HuiXin Wang, HaiFeng He, Ruiqin Bai
Summary: In order to address the ecological issues brought by Enteromorpha prolifera green tide, researchers have successfully extracted nanofibrillated cellulose (NFC) from Enteromorpha prolifera and prepared NFC/PVA composite films. The study demonstrates that the enhancement effect of NFC on PVA composite films is better than that of NCC, showing significant improvements in light transmittance, water resistance, and mechanical properties.
POLYMER COMPOSITES
(2021)
Article
Biochemistry & Molecular Biology
Anna Masek, Stefan Cichosz, Malgorzata Piotrowska
Summary: The study successfully prepared sustainable and degradable elastic PLA blends with high tensile strength and elongation, improved by the addition of flax fiber and montmorillonite, showing potential to become competitive and eco-friendly alternatives.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Applied
Mei Zhang, Yizhong Yuan, Jie Jin, Jinyu Sun, Xiaohui Tian
Summary: By using natural rubber, chitosan, and polyvinyl alcohol as raw materials, biodegradable semi-interpenetrating polymer network (semi-IPN) composites were prepared for sustained-release preparation. A hydrogel loaded with urea was used as the core, while a shell made of the coating material was prepared for slow-release fertilizer. The coating material showed improved mechanical properties, hydrophilicity, and soil water retention, and the slow-release effect was achieved through a combination of drug diffusion and skeleton dissolution.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Chemistry, Multidisciplinary
Ewomazino Ojogbo, Costas Tzoganakis, Tizazu H. Mekonnen
Summary: Cellulose nanocrystals (CNCs) are commonly used as biofillers in polymer composites, but their poor dispersion in hydrophobic polymers limits their reinforcing potential. This study investigated the covalent grafting of CNCs with epoxidized natural rubber (ENR) and the formation of hydrogen bonds, leading to improved dispersion and enhanced physicomechanical properties. The composites processed at 180 degrees C showed the highest tensile strength and insolubility, making them suitable as masterbatch fillers for other hydrophobic rubbers.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Composites
Jiong Hui, Ling Liu, Zhexu Yu, Qifei Wu, Liqun Zhang
Summary: In this study, epoxidized solution-polymerized styrene butadiene rubber (ESSBR) is used as the matrix and silica as filler, with the addition of a small quantity of 3-aminopropyltriethoxysilane (APTES) to adjust the cross-linking network of ESSBR/silica. The effect of two APTES addition methods on the properties of the nanocomposite is investigated. Compared to SSBR/TESPD/silica, ESSBR/APTES/silica shows significant improvements in wet-skid resistance and rolling resistance, with reduced emissions of silane coupling agents and volatile organic compounds.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Analytical
Gorawit Yusakul, Chongdee Thammakhet-Buranachai, Sujittra Poorahong, Seiichi Sakamoto, Fonthip Makkliang
Summary: An eco-friendly and reusable DESs-MCC/PVA sponge was synthesized and showed good efficiency and reproducibility in the extraction of parabens in milk, beverages, and tea samples. The sponge retained > 80% extraction efficiency and could be reused up to five times. This method offers a simple and environmentally friendly approach for the extraction of trace organic substances.
MICROCHEMICAL JOURNAL
(2023)
Article
Polymer Science
Kriengsak Damampai, Skulrat Pichaiyut, Klaus Werner Stoeckelhuber, Amit Das, Charoen Nakason
Summary: Enhancement of ENR properties by incorporating CNT-CCB hybrid fillers leads to improved mechanical strength, thermal stability, and electrical conductivity.
Article
Biotechnology & Applied Microbiology
Qiying Zeng, Naiyu Xiao, Xueqin Zhang, Wenhan Luo, Gengshen Xiao, Wanjing Zhai, Le Zhong, Bifeng Lan
Summary: This study successfully prepared biocomposite films with good mechanical and barrier properties by plasticizing microcrystalline cellulose films with Chinese leek extract, showing excellent comprehensive performance. In addition, the addition of leek extract improved the UV-shielding performance of the films, expanding the potential applications of microcrystalline cellulose films in the packaging industry.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Noor Azlina Abdul Ghani, Rizafizah Othaman, Azizan Ahmad, Farah Hannan Anuar, Nur Hasyareeda Hassan
ARABIAN JOURNAL OF CHEMISTRY
(2019)
Article
Multidisciplinary Sciences
Sarah Mohamad Ja'afar, Rozida Mohd Khalid, Rizafizah Othaman, Wan Nur Aini Wan Mokhtar, Suria Ramli
Article
Multidisciplinary Sciences
Zaitun Ghazali, Nur Hasyareeda Hassan, Mohd Ambar Yarmo, Teh Lee Peng, Rizafizah Othaman
Article
Multidisciplinary Sciences
Wan Farahhanim Wan Fathilah, Rizafizah Othaman
Article
Materials Science, Composites
Nur Farahein Hadina Ismail, Tan Meng Chai, Rusli Daik, Rizafizah Othaman
PLASTICS RUBBER AND COMPOSITES
(2020)
Article
Materials Science, Multidisciplinary
Zaitun Ghazali, Nabilah Suhaili, Maratun Najiha Abu Tahari, Mohd Ambar Yarmo, Nur Hasyareeda Hassan, Rizafizah Othaman
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)
Article
Engineering, Chemical
Nur Haninah Harun, Zurina Zainal Abidin, Abdul Halim Abdullah, Rizafizah Othaman
Article
Multidisciplinary Sciences
Ain Nadiah Sofiah Ahmad Khorairi, Noor Soffalina Sofian-Seng, Rizafizah Othaman, Khairul Farihan Kasim
Article
Biochemistry & Molecular Biology
Norilyani Izzati Hasanuddin, Wan Nur Aini Wan Mokhtar, Rizafizah Othaman, Farah Hannan Anuar
Summary: In this study, the effect of magnesium silicate on the adsorption performance of poly(lactic acid)-poly(ethylene glycol) membrane was investigated. The addition of magnesium silicate improved the hydrophilicity and mechanical strength of the membrane. The optimized adsorption parameters and mechanism were determined, revealing the reusable character of the membrane.
Article
Polymer Science
Nur Haninah Harun, Zurina Zainal Abidin, Umar Adam Majid, Mohamad Rezi Abdul Hamid, Abdul Halim Abdullah, Rizafizah Othaman, Mohd Yusof Harun
Summary: This study optimized the removal of Cu(II) ions using a Jatropha oil bio-based membrane blended with graphene oxide. The central composite model and response surface methodology were utilized for the optimization. The results demonstrated a high Cu(II) ions removal rate, and the reduced model showed good predictive ability.
Article
Polymer Science
YanzurMohd Aref, Rizafizah Othaman, Farah Hannan Anuar, Ku Zarina Ku Ahmad, Azizah Baharum
Summary: In this study, silica nanoparticles and fluorosilane were used to modify the surface of Sansevieria trifasciata fibre (STF) and achieve superhydrophobic properties. The results showed that nanoscale SiO2 particles were deposited on the STF surface and linked to PFOTS, resulting in a hydrophilic to superhydrophobic transformation of the fibre. This non-toxic and simple method opens new opportunities for natural fibres as reinforcement materials in composites.
Article
Multidisciplinary Sciences
Noraisah Jahi, Rizafizah Othaman, Azwan Mat Lazim, Suria Ramli
Article
Multidisciplinary Sciences
Fatimah Zahrah Mohd Kamil, Norilyani Izzati Hasanuddin, Rizafizah Othaman, Farah Hannan Anuar
Article
Multidisciplinary Sciences
Zaitun Ghazali, Mohd Ambar Yarmo, Nur Hasyareeda Hassan, Lee Peng Teh, Rizafizah Othaman
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2020)
Proceedings Paper
Mathematics, Applied
Zaitun Ghazali, Mohd Ambar Yarmo, Rizafizah Othaman
2018 UKM FST POSTGRADUATE COLLOQUIUM
(2019)
