Article
Green & Sustainable Science & Technology
Luigi Operato, Libera Vitiello, Paolo Aprea, Veronica Ambrogi, Martina Salzano de Luna, Giovanni Filippone
Summary: A life cycle assessment (LCA) study was conducted on green composites made of poly(lactic acid) (PLA) filled with different amounts of natural fibers obtained from pine needles or kenaf fibers. The study assessed the environmental impact of raw material production, transportation, fiber production, melt compounding, and granulation. The results showed that kenaf fibers had a greater impact in terms of toxicity indicators due to the use of fertilizers. Green composites were found to have lower environmental impact compared to pure PLA.
JOURNAL OF CLEANER PRODUCTION
(2023)
Review
Construction & Building Technology
Jamal A. Abdalla, Rami A. Hawileh, A. Bahurudeen, G. Jyothsna, A. Sofi, Vigneshwaran Shanmugam, B. S. Thomas
Summary: The construction industry is increasingly turning to environmentally friendly products due to the negative impact of non-renewable raw materials on the environment. Solid waste produced by these materials releases harmful gases, posing a threat to the environment. The use of natural fibers as a substitute for manufactured fibers has gained popularity in recent years, with this study discussing the effects of various natural fibers on concrete and highlighting their potential applications in building materials. Furthermore, this review provides insights into the composition, preparation, and processing of natural fibers, identifies future research avenues, and discusses possible limitations and negative impacts.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Review
Green & Sustainable Science & Technology
G. Rajeshkumar, S. Arvindh Seshadri, G. L. Devnani, M. R. Sanjay, Suchart Siengchin, J. Prakash Maran, Naif Abdullah Al-Dhabi, Ponmurugan Karuppiah, Valan Arasu Mariadhas, N. Sivarajasekar, A. Ronaldo Anuf
Summary: The development of sustainable bio composites is driven by environmental concerns globally, with biodegradable polymers and natural fibers playing a vital role in this field. While PLA has distinct advantages, blending it with natural fibers is necessary to overcome its limitations and improve performance.
JOURNAL OF CLEANER PRODUCTION
(2021)
Review
Polymer Science
M. A. Azman, M. R. M. Asyraf, A. Khalina, Michal Petru, C. M. Ruzaidi, S. M. Sapuan, W. B. Wan Nik, M. R. Ishak, R. A. Ilyas, M. J. Suriani
Summary: This article discusses the development of natural fibers and their composites in engineering applications, highlighting the challenges and potential solutions in design. The design and manufacturing of natural fiber-reinforced polymer composite products require a coordinated approach in system engineering and material selection. The applications of natural fibers include sports equipment, musical instruments, and electronic products.
Article
Environmental Studies
Jie Chen, Shoujun Huang, Tahseen Ajaz
Summary: This study examines the association between natural resources, technological innovation, and environmental sustainability, and finds a stable long-term relationship between natural resources and technological innovations with ecological sustainability. The validity of the Environmental Kuznets Curve in newly industrialized countries is also confirmed.
Article
Materials Science, Textiles
K. Amutha, A. Sudha, D. Saravanan
Summary: Banana silk, extracted from the pseudo-stem of banana plant, is widely used in various applications. The bracts of banana inflorescence also contain fibers with high cellulose content and low wax content, making them suitable for textile manufacturing. These fibers have a range of properties that make them potential substitutes for synthetic fibers in non-wovens and textile composites.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Biodiversity Conservation
Robi Kurniawan, Yogi Sugiawan, Shunsuke Managi
Summary: The study reveals that both economic growth and population density have significant impacts on natural capital levels, with population growth continuously exerting pressure and economic growth having a nonlinear effect on environmental quality. The beneficial impact of economic composition and technical effects decouples environmental degradation from economic growth, but only temporarily.
ECOLOGICAL INDICATORS
(2021)
Article
Construction & Building Technology
Babar Ali, Marc Azab, Hawreen Ahmed, Rawaz Kurda, Mohamed Hechmi El Ouni, Ahmed Babeker Elhag
Summary: Researchers have found that banana stem fiber (BSF) has high tensile strength and toughness, making it suitable for reinforcing concrete. Experimental results showed that 0.25% and 0.5% volumes of BSF significantly improved the strength of the concrete. Moreover, the mechanical performance of BSF was comparable to that of artificial polypropylene fiber (PPF).
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Nazmul Karim, Forkan Sarker, Shaila Afroj, Minglonghai Zhang, Prasad Potluri, Kostya S. Novoselov
Summary: Smart and sustainable natural fiber composites have advantages over synthetic fibers, but face limitations. A study has reported graphene-based natural jute fiber smart composites with excellent tensile and interfacial properties, showing significant enhancements in modulus and strength. These high-performance composites also exhibit effective electromagnetic interference shielding performance, potentially leading to the development of next generation sustainable natural fiber composites for high performance engineering applications.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Environmental Studies
Jiaqi Li, Yushan Li, Ziqi Zheng, Xiaoyu Si
Summary: The study examines the impact of natural resource rents, including oil rents, mineral rents, and coal rents, on carbon emissions in upper-middle-income economies from 1984 to 2021. The results show that oil and coal rents have adverse effects on carbon emissions, while mineral rents do not have a significant impact. Economic growth and renewable energy also have positive and significant impacts on carbon emissions.
Review
Green & Sustainable Science & Technology
Irshad Ahamad Khilji, Chaitanya Reddy Chilakamarry, Athira Nair Surendran, Kunal Kate, Jagannadh Satyavolu
Summary: This research explores the potential and significance of 3D printing natural fiber composite (NFC) materials, focusing on the mechanical, thermal, and environmental properties of biodegradable, renewable fibers. The study also looks into processing challenges and the advantages of using NFC materials in terms of sustainability and applications in various industries.
Review
Green & Sustainable Science & Technology
Jinbiao Zhao, Junjun Wang, Shuai Zhang
Summary: The study reveals that increased dietary fiber supplementation in pig diets reduces energy and phosphorous digestibility, leading to excess emission of minerals and soil and water pollution. Supplementation of biological enzymes can compensate for the negative effects of high amounts of dietary fibers on energy digestibility in pig production.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
J. Edwin Raja Dhas, K. Anton Savio Lewise, K. Naveen Kumar, Vijayanandh Raja, Hussein A. Z. AL-bonsrulah, Hijaz Ahmad, Shao-Wen Yao, Mohammed Al-Bahrani
Summary: The usage of lightweight materials in aeronautical and automobile industries is important for their high strength, lower weight, and energy consumption. This study focuses on incorporating coconut shell nanofillers in various palm fiber composites to improve their mechanical and morphological properties. The addition of coconut shell nanoparticles enhances the tensile, flexural, impact, hardness, and water absorption characteristics of the composites.
FRONTIERS IN MATERIALS
(2022)
Article
Environmental Studies
Liu Rong, Zhenbo Wang, Zhijun Li
Summary: The study addresses the limitation of CO2 emissions and ecological footprint in assessing pollution by introducing the load capacity factor as a metric to evaluate ecological quality. The research provides a more comprehensive evaluation of ecological quality by considering both environmental deterioration resulting from human demand and nature's ability to satisfy ecological needs.
Article
Materials Science, Textiles
Harshal Patil, Ashok Athalye
Summary: This study investigates the extraction, pre-treatment, dyeing, and characterization of natural fiber obtained from agricultural residues of corn husk. The results demonstrate that the dyeing effect is significantly affected by the ratio of dye to substrate, as well as the temperature and time. The findings provide a method for the efficient textile application of abundant agricultural waste.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Physics, Condensed Matter
Gbolahan Joseph Adekoya, Oluwasegun Chijioke Adekoya, Emmanuel Rotimi Sadiku, Yskandar Hamam, Suprakas Sinha Ray
Summary: In this study, the interaction between borophene nanoplatelets (BNPs) and graphene nanoplatelets (GNPs) on the mechanical properties of Poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) film was investigated using a finite element method (FEM). The results showed that the elastic moduli of the nanocomposites improved by 9.6% and 10.2%, respectively. This research provides valuable insights into enhancing the mechanical stability of PEDOT:PSS electrodes.
Article
Materials Science, Multidisciplinary
Azunna Agwo Eze, Emmanuel Rotimi Sadiku, Williams Kehinde Kupolati, Julius Musyoka Ndambuki, Jacques Snyman, Idowu David Ibrahim
Summary: The microstructures and properties of copper-niobium-graphite composites produced via spark plasma sintering (SPS) technique were investigated for their potential use as electrical connection materials at high-temperature application. The addition of nano and micron particles sizes of Nb powders in the composites was compared, and the composites sintered at 650 degrees C showed good thermal stabilities, low coefficient of friction, and suitable corrosion resistance, meeting the requirements for electrical contacting materials.
Article
Biochemistry & Molecular Biology
Oladipo Folorunso, Moses Oluwafemi Onibonoje, Yskandar Hamam, Rotimi Sadiku, Suprakas Sinha Ray
Summary: This study focuses on the fabrication of a hybrid polymer nanocomposite consisting of polyvinyl alcohol (PVA), polypyrrole (PPy), and reduced graphene oxide (rGO), and investigates its electrical conductivity. The experimental results show that the nanocomposite exhibits continuous conduction at a filler content of around 0.4% (wt%). The study also proposes and validates several models for analyzing the electrical transport property of the nanocomposite, and confirms the dependence of the electrical conductivity on the weight fraction of fillers. The flexibility, simplicity, and versatility of these models suggest their potential use as characterization/simulation tools for predicting the electrical conductivity of polymer composites.
Article
Materials Science, Multidisciplinary
Isiaka Aderibigbe, Patricia Popoola, Emmanuel Sadiku, Elliot Biro
Summary: This paper analysed the change in microstructure and the low-temperature deformation and strain hardening behavior of laser welded DP800 and DP1000. The results showed that the fusion zone was fully martensitic and the heat-affected zone had a significant impact on the joint efficiency. The welded joints exhibited slightly increased strength and work hardening exponents compared to the base metals. Fractures occurred in the base metal and heat-affected zone of the welded joints, showing characteristic dimple fractures.
Article
Chemistry, Physical
Olugbenga Ogunbiyi, Oluwashina Gbenebor, Smith Salifu, Samuel Olaleye, Tamba Jamiru, Rotimi Sadiku, Samson Adeosun
Summary: This study fabricated biodegradable polylactide (PLA) reinforced with treated coconut husk particulates (CCP) through electrospinning and RVE techniques, and compared the obtained mechanical properties. The electrospun CCP-PLA nanofibre composites showed improved mechanical properties, particularly at 4 wt.% reinforcement.
Review
Polymer Science
Idowu David Ibrahim, Yskandar Hamam, Emmanuel Rotimi Sadiku, Julius Musyoka Ndambuki, Williams Kehinde Kupolati, Tamba Jamiru, Azunna Agwo Eze, Jacques Snyman
Summary: Packaging materials are widely used in our daily lives and play a crucial role in preserving and prolonging the shelf life of products. However, there has been little discussion regarding the environmental impact of packaging materials after use and the need for sustainable packaging.
Review
Pharmacology & Pharmacy
Oluwasegun Chijioke Adekoya, Gbolahan Joseph Adekoya, Emmanuel Rotimi Sadiku, Yskandar Hamam, Suprakas Sinha Ray
Summary: Drug delivery systems are important for targeted drug delivery throughout the body. The use of density functional theory (DFT) in computational material science has greatly aided the design and development of these systems, allowing for more efficient and accurate predictions. This review discusses the application of DFT in explaining the features of polymer-based drug delivery systems, providing resources and future trends for researchers.
Article
Crystallography
Azunna Agwo Eze, Emmanuel Rotimi Sadiku, Williams Kehinde Kupolati, Jacques Snyman, Julius Musyoka Ndambuki, Idowu David Ibrahim
Summary: In this study, a near-equiatomic multi-principal element alloy with nano- and micron-sized Nb particles was synthesized using spark plasma sintering (SPS) technique. The alloys with nano-sized Nb particles showed faster sintering, lower wear rate, and dendritic microstructure with nano-segregations. Cu-NbTiB2C alloy sintered at 650°C exhibited the highest microhardness, while CuNbTiB2C alloy with micron-sized Nb particles sintered at 700°C showed the best corrosion resistance in a sulfuric acid environment. These novel materials have great potential for aerospace applications.
Review
Polymer Science
Oluwaseye Samson Adedoja, Emmanuel Rotimi Sadiku, Yskandar Hamam
Summary: Energy storage is a challenge in the energy sector, but supercapacitors have revolutionized the industry with their high energy capacity, reliable supply, and extended lifetime. Scientists have conducted investigations to improve their development and explore potential applications. This review provides an up-to-date investigation of supercapacitor technologies, including components, operating techniques, potential applications, technical difficulties, benefits, and drawbacks.
Article
Polymer Science
Karabo Innocent Matumba, Mpho Phillip Motloung, Vincent Ojijo, Suprakas Sinha Ray, Emmanuel Rotimi Sadiku
Summary: This study investigated the effect of Joncryl concentration on the properties of PLA/PCL and PLA/PEG blends. The addition of Joncryl influenced the properties of both blends, with reduced droplet size and improved compatibility observed in PLA/PCL blends, and the presence of a co-continuous morphology in PLA/PEG blends at certain Joncryl loadings. Joncryl addition also decreased the crystallinity of PCL and PEG in the blends. The thermal stabilities and mechanical properties of the blends were shown to be dependent on the Joncryl concentration.
Article
Polymer Science
Senthamil Selvi Poongavanam, Vishnupriya Subramaniyan, Periyar Selvam Sellamuthu, Jayaramudu Jarugala, Emmanuel Rotimi Sadiku
Summary: In this study, it was found that using bio-nanocomposite films containing 8% cellulose nanocrystals can extend the shelf life of Sapota fruits. The combination of these films with ajwain essential oil and oregano essential oil showed the best results, serving as suitable alternatives to commercial fungicides.
Article
Materials Science, Multidisciplinary
Senthamil Selvi Poongavanam, Vishnupriya Subramaniyan, Abhishek Biswal Rajendra, Periyar Selvam Sellamuthu, Jayaramudu Jarugala, Emmanuel Rotimi Sadiku
Summary: The effect of three different treatments on sapota fruits was compared in this study. The results showed that AV 100%+5 mu L AO and AV 100%+5 mu L OO treatments could prolong the shelf life and preserve the quality of sapota fruits. Therefore, using these treatments for sapota fruits could be a promising alternative to commercial fungicides.
Article
Chemistry, Multidisciplinary
Chandrasekaran Karthikeyan, Natarajan Sisubalan, Kokkarachedu Varaprasad, Radhamanohar Aepuru, Murali M. Yallapu, Mangalaraja Ramalinga Viswanathan, Umaralikhan, Rotimi Sadiku
Summary: This study synthesized Cs/Ni/NiO hybrid nanoparticles (HNPs) using an inexpensive chemical synthesis method and characterized their properties. The HNPs exhibited significant bactericidal and cytotoxic effects against pathogenic bacteria and carcinoma cells, while showing good biocompatibility towards normal cells.
NEW JOURNAL OF CHEMISTRY
(2022)
Review
Materials Science, Biomaterials
Jagan Mohan Dodda, Tomas Remis, Sadiku Rotimi, Yi-Cheun Yeh
Summary: This article provides an overview of PLGA-based conjugates in cancer research, focusing on their roles as targeted drug carriers and sustained drug controllers. The preparation and drug encapsulation of PLGA nanoparticles and FA-PEG-PLGA conjugates are discussed, with emphasis on the associated chemistries and biocompatibility. This review offers a deeper understanding of PLGA-conjugated materials for successful material design and biomedical applications.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Olugbenga Ogunbiyi, Smith Salifu, Rotimi Sadiku, Tamba Jamiru, Oluwagbenga Adesina, Olanrewaju Seun Adesina
Summary: In this study, Graphene/Inconel 738LC composites were synthesized using spark plasma sintering technique, and the microstructural features were investigated. It was found that with the increase in sintering temperature, the hardness property of the composites increased significantly, while porosity and fracture toughness decreased. The composite sintered at 1100 degrees C showed the highest hardness value and the lowest porosity.
MATERIALS TODAY-PROCEEDINGS
(2021)