Article
Engineering, Multidisciplinary
Yanlin Liu, Binbo Wang, Songqi Ma, Tao Yu, Xiwei Xu, Qiong Li, Sheng Wang, Yingying Han, Zhen Yu, Jin Zhu
Summary: The study introduces fully bio-based catalyst-free epoxy vitrimers for Carbon Fiber Reinforced Composites (CFRCs), showing exceptional malleability and reprocessability through compression molding. The material also demonstrates outstanding degradability, allowing for multiple recoveries of carbon fibers without damage.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Paper & Wood
Zhangdi Li, Qiong Tian, Yu Chen, Bencheng Zhao, Fengxian Qiu, Tao Zhang
Summary: The development of degradable alternative-plastic agricultural film is urgent to reduce plastic pollution. Degradable cellulosic films have shown great potential for sustainable agricultural development in a low-carbon economy, but radiative heat dissipation and poor water resistance hinder their practical application. In this study, a superhydrophobic transparent cellulosic film was developed by combining copper nanowires (CuNWs) with high reflection of mid-far infrared radiation and a hydrophobic functionalization strategy. The Cu/LC film showed increased radiation insulation ability, light transmittance, flexibility, and antimicrobial properties, providing a new way for developing degradable agricultural film.
Article
Materials Science, Characterization & Testing
Remilson Cruz, Muhammad Nisar, Humberto Palza, Mehrdad Yazdani-Pedram, Hector Aguilar-Bolados, Raul Quijada
Summary: The use of biodegradable polymers to reduce environmental pollution has become a popular topic of research. This study synthesized graphene oxide (GO) nanoparticles functionalized with alkylamines and used them as fillers in PLA nanocomposites. The results showed that the addition of modified GO improved the barrier properties of PLA, making it suitable for food packaging applications.
Article
Environmental Sciences
X. Sun, L. Miao, R. Chen
Summary: Bio-cementation is effective in solidifying sandy soils and loess soil particles, with the addition of loess soils affecting the pH of the supernatant, bacterial growth, and urease activity to a lesser extent. Samples treated with calcium chloride and calcium acetate showed higher productive rates for calcium carbonate compared to those treated with calcium nitrate. Bio-cementation reduced collapsibility coefficients of samples with varying initial densities, with larger density samples exhibiting higher productive rates for calcium carbonate. Additionally, the treatment cycles had an impact on the decreasing collapsibility coefficients, with larger increasing ranges of productive rates for precipitation observed between 4 to 6 cycles. Adding bacterial suspension and cementation solution together proved more effective for samples with smaller densities, while separate additions were more suitable for samples with larger densities.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Construction & Building Technology
Manas Sarkar, Moumita Maiti, Shilang Xu, Saroj Mandal
Summary: This study investigates the self-healing concepts in cement-based materials by using alkaliphilic spore-forming Bacillus cohnii microbes in bio-concrete. The regaining of structural efficiency is evaluated based on mechanical strength and durability properties. Bio-mineralized calcium carbonate seals a significant number of pores, resulting in a reduction of voids and an improvement in compressive strength. Microbes only degrade nutrients to produce healing agents without affecting the concrete structure. The sealing of cracks with microbes intensifies mechanical strength and validates self-healing.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Optics
K. Sravanthi, G. Sunita Sundari, Harikrishna Erothu
Summary: Biodegradable blended solid polymer electrolyte (BSPE) films were prepared using solution casting technique with different weight ratios of PVA:PS:(CH3COO)2Mg. The physical and chemical properties of the films were characterized by various techniques, showing varying conductivity and energy band gap. The highest specific capacitance and energy density were observed for the BSPE film with a 35:35:30 wt% ratio, indicating its potential for energy storage applications.
Article
Polymer Science
Sergey A. Shuvalov, Yaroslav Porfiryev, Dmitry S. Kolybelsky, Vladimir A. Zaychenko, Pavel S. Popov, Pavel A. Gushchin, Alexandr S. Mishurov, Daria A. Petrova, Vladimir A. Vinokurov
Summary: This paper investigated the possibility of replacing AW and EP additives in low-temperature greases with NFA that do not have these disadvantages, and analyzed the impact of nanosized particles as functional additives on the physicochemical characteristics and anti-wear and anti-scuffing properties of various greases. It was found that maximal improvement of anti-wear and anti-scuffing properties of greases can be achieved by using specific nanoparticles, such as silica and calcium borate, in different types of lubricants.
Article
Biotechnology & Applied Microbiology
Sami Ullah Dar, Zizhao Wu, Linyi Zhang, Peirong Yu, Yiheng Qin, Yezi Shen, Yunfan Zou, Leslie Poh, Yoav Eichen, Yigal Achmon
Summary: Plasticulture, the practice of using plastic materials in agriculture, consumes a significant amount of plastics every year. Developing biodegradable plastic materials is crucial for sustainable agriculture. Two types of potentially biodegradable plastic films were prepared and tested, with promising results showing the potential for using disulfide-based polymers as biodegradable materials in agriculture.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Polymer Science
You Kun Fan, Shao Min Feng, Xi Liang Liu, Kai Qi Li, Yi Hong Bao, Yi Liang Bao, Long Chen, Dong Liang Chen, Cheng Dong Xiong
Summary: A novel method was proposed to combine iodine atoms with polymers, resulting in high level X-ray opacity. The structure and X-ray developing ability of the polymers were characterized, and the degradability of the polymer was also proved.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Polymer Science
Ning Yang, Liangshan Feng, Kaiyu Li, Chen Feng, Zhanxiang Sun, Jialei Liu
Summary: The study found that the application of biodegradable polymer film can enhance tobacco yield, profitability, and quality ratio, and the positive effect is more significant after a certain period of covering and removing the PE film.
Article
Polymer Science
Ryoya Kamiki, Tomohiro Kubo, Kotaro Satoh
Summary: This study aims to synthesize novel degradable polymers by copolymerizing bio-based thiocarbonyl compounds with various vinyl monomers using radical addition-fragmentation ring-opening reaction. The obtained polymers have degradable functional groups that can be cleaved under specific conditions with different chemical stimuli.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Engineering, Mechanical
Charalampos Konstantinou, Emilio Martinez-Paneda, Giovanna Biscontin, Norman A. Fleck
Summary: In this study, microbiologically-induced calcium carbonate precipitation (MICP) was used to manufacture laboratory-scale specimens for fracture toughness measurement. The dependencies of mode I and mixed-mode fracture toughness on cementation, as well as their correlations with strength, permeability, and porosity, were investigated. A micromechanical model was developed to predict the relationship between mode I fracture toughness and the degree of cementation. The role of crack tip T-stress in determining kink angle and toughness under mixed mode loading was also determined.
EXTREME MECHANICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
How-Ji Chen, You-Ren Lin, Chao-Wei Tang, Yi-Chun Hung
Summary: This study explored the feasibility of microbial-induced calcium carbonate precipitation (MICP) technology for stabilizing EAF reducing slag. The results showed that MICP technology can effectively stabilize EAF reducing slag and achieve the purpose of stabilization. It also demonstrated a good stabilization effect on the compressive strength of concrete prepared with EAF reducing slag.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Yanbo Chen, Yufeng Gao, Charles W. W. Ng, Haowen Guo
Summary: Enzyme induced carbonate precipitation (EICP) is an effective ground improvement technique that enhances soil properties by cementing soil pores with calcium carbonate. The study found that the calcium carbonate precipitation fills macro-pores in sand, leading to a more uniform pore-size distribution and increased water retention ability.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Multidisciplinary Sciences
Amany M. Reyad, Gehad Mokhtar
Summary: Novel carrier units were evaluated for their bio-healing benefits in concrete repair. Bacillus cereus MG708176, an alkali-tolerant, calcite precipitating, endospore-forming strain, was immobilized on wood ash units and added as a bio-healing agent. The results showed significant improvements in the mechanical properties of concrete by filling the cracks with a calcite-producing bacterium immobilized on wood ash units.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Environmental
Mariana Mariana, Abdul H. P. S. Khalil, Esam Bashir Yahya, N. G. Olaiya, Tata Alfatah, A. B. Suriani, Azmi Mohamed
Summary: In recent years, aerogels, as ultra-lightweight and porous nanostructured functional materials, have been widely utilized in industrial applications such as polluted water treatment. With their high surface area, aerogels can be modified to become super absorbers for various water pollutants. Additionally, the development of smart nanostructured aerogels allows for reversible adsorption and desorption of specific water pollutants under different external stimuli. This review comprehensively discusses the evolution, types, and properties of aerogel functional materials, highlighting their modification approaches and future potentials in water treatment applications.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Mohammed Danish, Zhou Pin, Lou Ziyang, Tanweer Ahmad, Shahnaz Majeed, Ahmad Naim Ahmad Yahya, Waheed Ahmad Khanday, H. P. S. Abdul Khalil
Summary: Banana trunk waste was used to produce activated carbons with improved surface area and phosphorus atom dispersion. The production process was optimized through a chemical activation method using phosphoric acid. The activated carbon showed a porous surface with high carbon content and good thermal stability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Mun Wai Tham, Nurul M. R. Fazita, Abdul H. P. S. Khalil, Mariatti Jaafar, Ahmad Rashedi, Mohamad M. K. Haafiz
Summary: This study investigated the effect of maleic anhydride grafted PLA (PLA-g-MA) as a compatibilizer on the properties of bamboo/PLA and jute/PLA composites. The results showed that, at appropriate addition levels, PLA-g-MA could enhance interfacial adhesion and improve the thermal and mechanical properties of the composites. However, exceeding a certain addition level resulted in adverse effects on the properties of the composites.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
M. A. Iskandar, Esam Bashir Yahya, H. P. S. Abdul Khalil, A. A. Rahman, M. A. Ismail
Summary: Oil spills and oily wastewater have become a major environmental problem. Biopolymeric aerogels, with their superior oil absorption capacity, have been proposed as a green solution. Modifying nanocellulose-based aerogel can enhance its oil absorption capacity, selectivity, and recovery after use.
Article
Polymer Science
Syifaul Huzni, Ikramullah Ikramullah, Israr B. M. Ibrahim, Syarizal Fonna, Teuku Arriessa Sukhairi, Andri Afrizal, Umar Muksin, H. P. S. Abdul Khalil, Sri Aprilia, Samsul Rizal
Summary: In this study, a numerical method was used to simulate the microbond test of natural fibers. The effects of three experimental parameters on the interfacial shear stress (IFSS) were investigated. The results showed that fiber diameter, embedded length, and vise-specimen distance all played significant roles in determining the IFSS values.
Review
Materials Science, Multidisciplinary
H. P. S. Abdul Khalil, Esam Bashir Yahya, Fauziah Jummaat, A. S. Adnan, N. G. Olaiya, Samsul Rizal, C. K. Abdullah, Daniel Pasquini, Sabu Thomas
Summary: Biopolymers-based aerogels have significant importance in medical and pharmaceutical applications, as they can be used for the delivery of various drugs, vaccines, and genes. Their unique chemical and physical properties allow them to overcome the negative issues associated with conventional delivery systems and play a role in oral delivery and prolonged release of anticancer chemo-drugs.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Polymer Science
Samsul Rizal, H. P. S. Abdul Khalil, Shazlina Abd Hamid, Ikramullah Ikramullah, Rudi Kurniawan, Che Mohamad Hazwan, Umar Muksin, Sri Aprilia, Tata Alfatah
Summary: In this study, packaging films were developed using red seaweed and coffee waste as raw materials. The addition of coffee filler improved the structural properties, hydrophobicity, and tensile strength of the biopolymer film. This seaweed/coffee biopolymer film has potential applications in food packaging and other fields.
Article
Chemistry, Multidisciplinary
Samsul Rizal, H. P. S. Abdul Khalil, Shazlina Abd Hamid, Esam Bashir Yahya, Ikramullah Ikramullah, Rudi Kurniawan, Che Mohamad Hazwan
Summary: In this study, cinnamon nanoparticles were incorporated into red seaweed biopolymer films using a solvent casting method. The addition of cinnamon nanoparticles improved the morphological, mechanical, thermal, wettability, and antimicrobial properties of the films.
Review
Biochemistry & Molecular Biology
Marios C. Christodoulou, Jose Orellana C. Palacios, Golnaz Hesami, Shima Jafarzadeh, Jose M. Lorenzo, Ruben Dominguez, Andres Moreno, Milad Hadidi
Summary: In recent years, there has been growing interest in the application of antioxidants in food and pharmaceuticals due to their beneficial health effects against oxidative-related diseases. Various assays, including hydrogen atom transfer, single electron transfer, and scavenging activities, can measure the antioxidant potential. Understanding the mechanisms, advantages, and limitations of different methods is crucial for selecting appropriate techniques for assessing antioxidant activity. Among the analytical techniques available, spectrophotometric methods are the most common due to their sensitivity, rapidness, low cost, and reproducibility. This review covers the mechanisms, color changes, advantages, and limitations of spectrophotometric methods.
Review
Agronomy
Syaifullah Muhammad, Esam Bashir Yahya, H. P. S. Abdul Khalil, M. Marwan, Yonss M. M. Albadn
Summary: The global demand for clean water has risen in importance due to population growth, civilization, and increasing sources of contamination. Aerogels, a type of porous material, have unique properties and can be made from various inorganic and organic materials. Activated carbon, known for its pollutant adsorption, has been used to treat water contaminated with organic dyes, heavy metals, oils, and toxic chemicals. This review focuses on the development of agricultural waste-based carbon and activated carbon loaded nano-structured aerogels for wastewater treatment applications, discussing their potential use, challenges, and future prospects.
Article
Food Science & Technology
Sanaz Ghasemi, Elham Assadpour, Mohammad Saeed Kharazmi, Shima Jafarzadeh, Masoumeh Zargar, Seid Mahdi Jafari
Summary: Orange peel oil (OPO) was encapsulated within biopolymer nanocomposites to improve its bioavailability and stability. The encapsulation efficiency was in the range of 70-88%, and the nanoscale size of the particles was confirmed. The release profile of OPO differed under different pH and temperature conditions, with the Higuchi model providing the best fit to the experimental data. The encapsulated OPO showed promising characteristics for food flavoring applications.
Review
Food Science & Technology
Mahsa Majzoobi, Shima Jafarzadeh, Shahla Teimouri, Mehran Ghasemlou, Milad Hadidi, Charles S. Brennan
Summary: Meeting the United Nation's sustainable development goals for zero hunger is becoming more challenging due to climate change and political and economic challenges. An effective strategy to address hunger is the production of affordable, nutrient-dense, and sustainable food products. Ancient grains, which were once forgotten, have emerged as a solution for nutrition and food supply chain problems. This review critically examines the progress in this emerging field and discusses the potential roles of ancient grains in fighting hunger.
Review
Polymer Science
Azfaralariff Ahmad, Mohamad Anuar Kamaruddin, H. P. S. Abdul Khalil, Esam Bashir Yahya, Syaifullah Muhammad, Samsul Rizal, Mardiana Idayu Ahmad, Indra Surya, C. K. Abdullah
Summary: Water pollution is a significant environmental problem caused by industrial and economic growth, with human activities such as industry, agriculture, and technology increasing pollutant levels and harming the environment and public health. Organic dyes and heavy metals are major contributors to water pollution, with dyes causing ecological imbalance through increased temperature and heavy metals adding toxic elements to wastewater. Researchers have focused on adsorption, precipitation, and filtration as effective water treatment methods, with adsorption being a simple and inexpensive way to remove organic dyes. Cellulose-based aerogels have shown promise as sustainable and efficient materials for water treatment, with their unique properties and potential for removing dyes and heavy metals.
Review
Forestry
Esam Bashir Yahya, Suhail Salem Elarbash, Rahul Dev Bairwan, Montaha Mohamed Ibrahim Mohamed, Niaz Bahadur Khan, Putri Widyanti Harlina, H. P. S. Abdul Khalil
Summary: The use of microorganisms for the isolation and assembly of nano-cellulose offers advantages such as sustainability, rapid renewability, low toxicity, and scalability. Microbial processes require less energy and can reduce production costs compared to chemical isolation processes. They also result in higher yields of uniform nanocellulose with improved mechanical properties. This review discusses the role of different microorganisms in nanocellulose isolation, the types and properties of nanocellulose, and the challenges and propositions for enhancing its quality.
Review
Polymer Science
Wafa Mustafa Saleh, Mardiana Idayu Ahmad, Esam Bashir Yahya, Abdul H. P. S. Khalil
Summary: Particulate matter (PM) pollution is a global environmental and public health issue that has severe consequences. Fine particles can come from various sources, including natural events and human activities. Conventional air filters made from non-biodegradable materials are not environmentally friendly. Nanostructured biopolymer aerogels show promise in particulate matter removal due to their unique properties and renewable nature. This review discusses the meaning, properties, and advantages of nanostructured aerogels and their potential in particulate matter removal. It also covers the types and sources of particulate matter, health and environmental effects, and challenges in particulate matter removal.
