Article
Polymer Science
Siddhant Datta, Todd C. Henry, Yelena R. Sliozberg, Bradley D. Lawrence, Aditi Chattopadhyay, Asha J. Hall
Summary: This study focuses on a novel carbon nanotube-based electroactive shape memory epoxy nanocomposite with improvements in static and dynamic mechanical properties, achieved through a specialized fabrication process. The high CNT wt. fraction of 30% leads to significant enhancement in mechanical performance due to effective interfacial interaction between SMEP and CNTs at the nanoscale. Dynamic mechanical measurements showed notable improvements in elastic modulus and storage modulus for the buckypaper-enhanced SMEP, demonstrating potential for practical applications in stress-free electrical actuation and shape memory response.
Article
Materials Science, Multidisciplinary
Sen Liu, Xuanxuan Dong, Yixian Wang, Jian Xiong, Rui Guo, Junfeng Xiao, Chufeng Sun, Fei Zhai, Xiaolong Wang
Summary: Programmed 4D printing shape-memory polymers (SMPs) have been recognized as a promising approach for developing dynamic adaptive components with complex architectures and biomimetic adaptation capabilities. However, the availability of SMPs systems is limited, mainly due to the high cost of monomers used in their production. Additionally, most SMPs exhibit poor elongation at break and strain, which hinders their ability to undergo significant bending during shape memory deformation. In this study, a new epoxy vinyl ester resin ink is developed to enhance the 4D printing process of shape memory epoxy-based polymers, resulting in successfully printed structures with favorable strain rate and promising shape memory performance. Moreover, the application potential of these printed components in aerospace and safety engineering is confirmed through micro to macro multi-scale 4D printing structure design.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Chai Hua Tay, Norkhairunnisa Mazlan, Mohamed Thariq Hameed Sultan, Khalina Abdan, Ching Hao Lee
Summary: As environmental awareness grows, the development of biocomposites is driven forward, but their application still lags behind. Enhancements to biocomposites include hybridization of fibers, reinforcement treatments, and modified epoxy production methods. Test results show significant improvements in performance and high interfacial adhesion in treated fibers, indicating potential for market expansion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Polymer Science
Siew Sand Chee, Mohammad Jawaid, Othman Y. Alothman, Hassan Fouad
Summary: The study investigates the mechanical and dynamic mechanical properties of hybrid natural fiber composites filled with nanoclay, with a focus on the effects of OMMT on enhancing the strength and storage modulus of the composites. The addition of OMMT results in improved mechanical properties and reduced voids and fiber pull-out in the composites.
Article
Polymer Science
Muhamad Hasfanizaam Mat Yazik, Mohamed Thariq Hameed Sultan, Mohammad Jawaid, Norkhairunnisa Mazlan, Abd Rahim Abu Talib, Ain Umaira Md Shah, Syafiqah Nur Azrie Safri
Summary: This study investigates the shape memory properties of a shape memory epoxy polymer (SMEP) nanocomposite incorporated with a hybrid of multi-walled carbon nanotube (MWCNT) and montmorillonite nanoclay (MMT). The nanocomposites were characterized through cyclic thermomechanical tests and fold-deploy tests. The inclusion of the hybrid nanofiller resulted in a decrease in shape recovery, except for the SMEP nanocomposite. The recovery through thermal and electrically activated methods showed similar profiles, with electrically activated recovery reacting faster. The effect of nanofiller inclusion was more prominent in the thermal activation method. The hybrid filler SMEP nanocomposite with 3 wt.% MMT and 1.0 wt.% MWCNT exhibited better shape memory properties. These findings provide guidance for selecting nanofiller loadings based on performance for specific applications in industries such as aerospace, medical, and automotive.
Article
Instruments & Instrumentation
Avadesh Yadav, Sourabh Kumar Singh, Sreetam Das, Satish Kumar, Abhishek Kumar
Summary: In this study, SMP composites were developed by ultrasonic mixing carbon fiber and amorphous epoxy to enhance the properties and shape memory effect. The addition of 1% carbon fiber improved the flexural and tensile strength of epoxy by 12.7% and 16.2%, respectively. The fracture toughness of epoxy increased by 94.05% after adding 1% carbon fiber. UV-vis-NIR testing indicated a reduction in energy bandgap. The shape fixity and shape recovery ratios of epoxy decreased to 90.52% and 87.86%, respectively, with the addition of 1.5 wt.% carbon fiber, but the recovery time improved from 57 s to 33 s. The shape recovery rate was enhanced with carbon fiber reinforcement in the epoxy composite.
SMART MATERIALS AND STRUCTURES
(2023)
Article
Materials Science, Ceramics
Yuhang Zhang, Jianfei Xu, Yiqun Hu, Jiejie Li, Suhang Ding, Re Xia
Summary: This study investigates the shock responses of bilayered metallic glass-shape memory alloy (MG-SMA) nanocomposites through atomistic simulations. The results reveal that the MG/SMA interface can reflect compression/rarefaction waves, and the SMA exhibits stronger shear resistance than the MG. Different phase transformations occur at different velocities.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Polymer Science
Noorshashillawati Azura Mohammad, Sahrim Hj Ahmad, Ruey Shan Chen, Nurul Emi Nor Ain Mohammad
Summary: The introduction of graphene nanoplatelets into rubber toughened epoxy matrix showed significant enhancement in mechanical and thermal properties. The incorporation of GNP optimized tensile strength and modulus, while also improving thermal stability and interfacial interaction between matrix and nanofiller. XRD analysis confirmed the dispersion states of GNP in the epoxy/LENR, highlighting the potential of GNP in enhancing composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Composites
Syed Waheedullah Ghori, Gunji Srinivasa Rao
Summary: This study evaluated the thermal and mechanical properties of epoxy hybrid composites reinforced with date palm fiber and kenaf fiber at various fiber loadings. The results showed that kenaf fiber had a positive impact on date palm fiber, improving both the mechanical and thermal properties with potential applications in the building industry and automobiles. The study also suggests further research on comparing treated hybrid composites with untreated ones.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Denise Bellisario, Fabrizio Quadrini, Leandro Iorio, Loredana Santo, Zhenxue Zhang, Xiaoying Li, Hanshan Dong, Dionisis Semitekolos, Georgios Konstantopoulos, Costas A. Charitidis
Summary: Microscopic testing has been conducted on shape memory polymer composites (SMPCs) manufactured with commercial materials used in aerospace. The results were compared with conventional macro-scale tests. Different SMPC laminates were studied to evaluate their lightweight and stiff sandwich structures with shape memory properties. The recovery mechanisms at the micro-scale were identified and found to affect the shape memory performances at the macro-scale.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Composites
Hulya Kaftelen-Odabasi, Akin Odabasi, Mustafa ozdemir, Murat Baydogan
Summary: In this study, the effect of graphene nanoplatelets (GNPs) content on electrical conductivity, flexural properties, and dynamic mechanical properties of epoxy matrix composite reinforced by carbon fibers was investigated. The results showed that an appropriate amount of GNPs can significantly improve the conductivity and storage modulus, but a high content can reduce the flexural strength.
POLYMER COMPOSITES
(2023)
Article
Biochemistry & Molecular Biology
Jiaoman Li, Zhengyi Zhang, Yan Zhang, Fangli Sun, Dongyue Wang, Hui Wang, Zhenfu Jin
Summary: In this study, lignosulfonate (LS) was successfully introduced into the epoxy resin matrix through ethylene glycol (EG) dissolution and linked into the cross-linked network structure. The ultimate properties of cured samples were effectively adjusted by changing the proportion of LS and EG components, with optimal curing process parameters determined through analysis of curing reaction and kinetics. The thermal and mechanical properties of the modified epoxy resin were significantly improved by the addition of LS and EG.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Ruhan Yang, Weijie Li, Ruibin Mo, Xinya Zhang
Summary: In this study, a series of recyclable biobased dynamic cross-linking epoxy polymers were synthesized using biobased materials under solvent-free conditions. The triamine cross-linker significantly influenced the properties of the polymers, and the polymer with polyetheramine T403 showed a good shape memory effect. The polymers exhibited good recyclability when the dynamic bond content was appropriate.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Construction & Building Technology
Xueyan Zhou, Biao Ma, Kun Wei, Xiaoqing Wang
Summary: Shape memory epoxy resin (SMER) is a new intelligent polymer material that can improve the deformation recovery performance of asphalt mixtures. By adjusting the dosage, loading rate, and deformation recovery temperature of SMER, the final deformation recovery rate of the asphalt mixture can be increased. The infrared thermal imaging test reveals that the shape memory function of SMER is activated by pavement temperature and solar energy, aiding in the recovery of the asphalt mixture and slowing down the appearance of rutting in asphalt pavement.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Applied
Xiaohong Liu, Xuan Song, Bifang Chen, Jiaming Liu, Zhiqiang Feng, Wenchao Zhang, Juanjuan Zeng, Liyan Liang
Summary: In this study, a high-strength epoxy resin EP-SeSe with self-healing and shape memory properties was designed, which exhibited excellent shape memory performance, self-healing performance, high mechanical strength, and exceptional thermal stability. Through the [2 + 1] radical-mediated mechanism of the dynamic diselenide bonds, EP-SeSe displayed fast stress relaxation, self-healing, remodeling, and weldability above the glass transition temperature. This study provided a facile method for constructing robust epoxy resins with self-healing and shape memory properties, with great potential applications.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Article
Materials Science, Textiles
Mohammad Jawaid, Lau Kia Kian, H. Fouad, N. Saba, Othman Y. Alothman, Mohamed Hashem
Summary: In this study, different fibers from different parts of Washingtonia plant were characterized, showing varying chemical composition and properties. The spine fiber from the trunk exhibited high cellulose content and crystallinity, suitable for reactive material fabrication, while the leaf stalk fiber had lower cellulose content and thermal stability.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Biochemistry & Molecular Biology
Anish Khan, Lau Kia Kian, Mohammad Jawaid, Aftab Aslam Parwaz Khan, Hadi M. Marwani, Maha Moteb Alotaibi, Abdullah M. Asiri
Summary: This study aimed to synthesize SBR composites with the properties of graphene oxide filler and biodegradable lignin fillers. The addition of graphene oxide improved the morphology of pure SBR, while lignin fillers enhanced the molecular interaction between graphene oxide and SBR. Composite with 1 wt% lignin showed promising characteristics for green tire applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Materials Science, Composites
Farah Hanan, Tabrej Khan, Mohammad Jawaid, Mohamed Thariq Hameed Sultan, Tamer Sebaey, Balbir Singh, Siti Noorbaini Sarmin
Summary: Natural fiber-based materials are widely used as substitutes for synthetic fibers in the composite sector. Experimental study showed that pure kenaf composite has the best complex modulus and thermal stability, making kenaf fibers suitable for aerospace, automotive, and civil engineering applications requiring high dimensional stability and excellent mechanical properties.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Paper & Wood
Lobna A. Elseify, Mohamad Midani, Ayman A. El-Badawy, Said Awad, Mohammad Jawaid
Summary: This study compares date palm fibers with other leaf fibers and finds that date palm fibers have finer diameter, higher cellulose purity, enhanced thermal stability, and high tensile strength. This research helps to identify the potential valorization of date palm fibers.
Review
Materials Science, Composites
Viswanath Ganapathy, Gunasegeran Muthukumaran, P. Edwin Sudhagar, Ahmad Rashedi, Mohd Nor Faiz Norrrahim, Rushdan Ahmad Ilyas, Kheng Lim Goh, Mohammad Jawaid, Jesuarockiam Naveen
Summary: Nanocellulose, a green material with abundant resources, remarkable performance, and sustainability, has attracted considerable attention. This review article explores the impact of nanocellulose on the mechanical properties of nanocellulose-based composites and discusses its applications in fiber-reinforced polymer composites.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Textiles
Messaouda Boumaaza, Ahmed Belaadi, Hassan Alshahrani, Mostefa Bourchak, Mohammad Jawaid
Summary: This study explores the use of response surface methodology (RSM) to predict the compressive strength of bio-mortars and determine the optimal values for each parameter. Experimental and statistical analyses show that partially replacing cement with biochar produced from Washingtonia filifera waste pyrolysis improves the compressive strength and thermal conductivity of the bio-mortars. The findings demonstrate the feasibility of producing bio-mortars with a compressive strength of 63.81 MPa, a 1% replacement rate of biochar, and a coefficient of thermal conductivity of 0.52 W/m.K.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Thermodynamics
Muhamad Hasfanizam Mat Yazik, Chang Wei Shyang, Mohammad Hafifi Hafiz Ishak, Farzad Ismail
Summary: Hydrokinetic turbines face challenges with complex vortical flows, leading to increased failure probability. The selection of turbine blade material plays a critical role in maintaining performance, reducing maintenance costs, and preventing downtime. This article provides an overview of existing materials used for hydrokinetic turbine blades, discussing their advantages, disadvantages, relative performance, and life-cycle assessment. It serves as a fundamental criterion for researchers and policymakers in material selection for hydrokinetic turbine applications.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Review
Engineering, Environmental
Aatikah Meraj, Surendra Pratap Singh, M. Jawaid, Mohamed Mahmoud Nasef, Taghrid S. Alomar, Najla AlMasoud
Summary: Agricultural residues have gained attention as a widely available waste source for creating value-added products. Lignin, a natural biopolymer, holds potential for developing eco-friendly and low-cost products. This review article discusses the use of natural deep eutectic solvents (NADES) as a sustainable method for extracting and isolating lignin, and also covers pre-treatment methods, advantages and disadvantages, synthesis of NADES, processing of lignin, applications, challenges, and future perspectives. The conclusion highlights the effectiveness of NADES in the purification and isolation of lignin from agro wastes, enhancing the economic value of lignocellulosic biomass.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Mechanics
Muhamad Hasfanizam Mat Yazik, Wei Shyang Chang, Mohammad Hafifi Hafiz Ishak, Esmaeel Fatahian, Farzad Ismail
Summary: The Savonius wind turbine, a vertical-axis wind turbine invented in the 1930s, features a cylindrical drum and semi-circular blades. It is known for its simple design, low costs, and self-starting ability, making it suitable for rural areas. This study utilized a three-dimensional computer simulation to analyze the performance of a static Savonius turbine at different blade angle positions and considered the effects of surface roughness. The findings highlighted the importance of material selection in turbine blade development to minimize downtime and potentially save costs.
Article
Polymer Science
Muhamad Hasfanizaam Mat Yazik, Mohamed Thariq Hameed Sultan, Mohammad Jawaid, Norkhairunnisa Mazlan, Abd Rahim Abu Talib, Ain Umaira Md Shah, Syafiqah Nur Azrie Safri
Summary: This study investigates the shape memory properties of a shape memory epoxy polymer (SMEP) nanocomposite incorporated with a hybrid of multi-walled carbon nanotube (MWCNT) and montmorillonite nanoclay (MMT). The nanocomposites were characterized through cyclic thermomechanical tests and fold-deploy tests. The inclusion of the hybrid nanofiller resulted in a decrease in shape recovery, except for the SMEP nanocomposite. The recovery through thermal and electrically activated methods showed similar profiles, with electrically activated recovery reacting faster. The effect of nanofiller inclusion was more prominent in the thermal activation method. The hybrid filler SMEP nanocomposite with 3 wt.% MMT and 1.0 wt.% MWCNT exhibited better shape memory properties. These findings provide guidance for selecting nanofiller loadings based on performance for specific applications in industries such as aerospace, medical, and automotive.
Article
Materials Science, Composites
K. Senthilkumar, M. Chandrasekar, Mohammad Jawaid, Mohamed H. Mahmoud, Hassan Fouad, Carlo Santulli, Sheikh Ahmad Zaki
Summary: The effect of different proportions of pineapple leaf fiber on composites reinforced with olive trunk leaves powder was evaluated. The study measured the tensile properties, moisture absorption, and thermal stability. The results showed that increasing the proportion of pineapple leaf fiber improved the tensile strength, but the hybrid composites were inferior to the parent composites in terms of tensile strength and Young's modulus.
POLYMER COMPOSITES
(2023)
Article
Engineering, Chemical
Othman Y. Alothman, Sameer Awad, Ramengmawii Siakeng, Eman M. Khalaf, Hassan Fouad, Nasser Abd M. El-salam, Faraz Ahmed, M. Jawaid
Summary: In this study, PLA/NF biocomposites were prepared by melt extrusion method using locally grown natural fibers as fillers. PEG was added as a plasticizer to improve the processability of the PLA. Mechanical and thermal characterization were conducted to assess the processing effects of PLA/NF biocomposites. The results showed that the mechanical properties of PLA/NF biocomposites were improved compared to PLA. The DMA and TMA analysis revealed slight reduction in storage modulus and loss modulus, while the T-g values from DSC analysis remained unchanged. TMA analysis also showed a significant decrease in coefficient of thermal expansion values for PLA/NF biocomposites. Overall, PLA/NF biocomposites have the potential for novel biocomposite applications, especially in biomedical field, due to their good stiffness, tensile strength, and dimensional stability.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Materials Science, Textiles
Alhassan Yakubu Abare, Mohammad Jawaid, Norul Hisham Hamid, Balkis Fatomer A. Bakar, Ahmad Safwan Ismail, Siti Noorbaini Sarmin, Hassan Fouad, Mohamad Midani
Summary: This study investigated the physical, mechanical, morphological, and thermal properties of woven kenaf fibre reinforced bio-epoxy composites. The results showed that increasing fibre loading percentage led to higher density, water absorption, tensile strength, modulus, and impact strength. The optimal properties were achieved with 40% fibre loading in the kenaf/bio-epoxy composites.
JOURNAL OF INDUSTRIAL TEXTILES
(2023)
Article
Engineering, Marine
Muhamad Hasfanizam Mat Yazik, Mohd Hafiz Zawawi, Ali Najah Ahmed, Lariyah Mohd Sidek, Hidayah Basri, Farzad Ismail
Summary: This paper presents a one-way three-dimensional fluid-structure interaction simulation to analyze the performance of a static Savonius hydrokinetic turbine. The results indicate that the optimal rotor position for the highest coefficient of static torque is at 15 degrees. Increasing water velocity improves the turbine's static torque, while surface roughness has a negative effect on the static torque coefficient. Different materials exhibit different stress and deformation, highlighting the importance of materials selection in the early design process.
