Mohd Ridzuan Mohd Jamir
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Preferred name
Mohd Ridzuan Mohd Jamir
Official Name
Mohd Ridzuan , Mohd Jamir
Alternative Name
Ridzuan Mohd Jamir, Mohd
M Ridzuan, M. J.
Ridzuan, M. J.M.
Mohd Jamir, Mohd Ridzuan
Jamir, Mohd Ridzuan Mohd
Main Affiliation
Scopus Author ID
36069815000
Researcher ID
H-9343-2012

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Tensile properties of hybrid composites based on kenaf and glass fibre with the effect of stacking sequence: Water absorption behaviour

2021-05-03 , Mariam M. , Khairiah U. , Afendi M. , Mohd Shukry Abdul Majid , Mohd Ridzuan Mohd Jamir

In this research, the aim of the study is to investigate the mechanical properties of eco-hybrid natural polymer of kenaf and glass fibre. The specimens were fabricated using vacuum infusion technique and joining into single lap bolted joint. The mechanical fasteners of Huck lock bolt were used as joining method with the bondline length of 64 mm. The investigation was conducted under two different conditions of dry and wet of 50°C for water immersion of 20 days. The effect of moisture was defined in bolted joints materials. The tensile test with a speed rate of 1 mm/min was conducted for both condition using 100 kN load cell until total failure of specimen. The experimental results were plotted into load displacement and stress strain curve for each environment.

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Alkali treatment influence on cellulosic fiber from Furcraea foetida leaves as potential reinforcement of polymeric composites

2022-07-01 , Shahril S.M. , Mohd Ridzuan Mohd Jamir , Mohd Shukry Abdul Majid , Bariah A.M.N. , Rahman M.T.A. , Narayanasamy P.

The present study explores the potential of the alkali-treated Furcraea foetida (FF) fibers as reinforcement materials in polymeric composites. The fibers were treated and soaked for 3 h in an alkali solution of different concentrations (3, 6, 9, 12, and 15 wt.%). The untreated and alkali-treated fibers were characterized, and their physical and mechanical properties were determined. The results revealed that the 9 wt.% alkali-treated FF fiber yielded superior mechanical strength and Young's modulus because of its relatively high cellulose fraction after removing non-cellulosic materials. The twisting behavior and increasing microfibril angle of the FF fiber were attributed to a non-linear region in the stress-strain curves after the alkali treatment. The Fourier-transform infrared and X-ray diffraction studies endorsed the removal of non-cellulosic materials on optimally treated fiber. Thermogravimetric analysis of the 9 wt.% alkali-treated FF fiber confirmed the increase in the degradation temperature (358 °C) and activation energy (145.29 kJ/mol). Scanning electron microscopy results confirmed that the fiber surface roughness is proportional to the alkali solution concentration. Then the results were compared with others previous studies. Thus, treating FF fibers with optimized alkali concentration at specified soaking period can enhance their performance as a viable reinforcement material in polymeric composites for low-load applications.

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Properties and tribological evaluation of graphene and fullerene nanoparticles as additives in oil lubrication

2023 , Muhammad Hazman bin Sharuddin , Mohd Hafis Sulaiman , Nur Syuhadah Kamaruddin , Aishah Najiah Dahnel , Nor Farah Huda Abd Halim , Mohd Ridzuan Mohd Jamir , Ahmad Majdi Abdul-Rani

In this study, SAE-0W20 engine oil was mixed with graphene and fullerene nanoparticles. The goal of this study was to evaluate and compare the effects of different carbon nanoparticles on the thermal, rheological, and tribological properties of engine oil, such as thermal degradation, viscosity, friction, and wear. Using a two-step process, graphene and fullerene nanostructures were dispersed in low-viscosity SAE-0W20 engine oil at a concentration of 0.05 wt.%. The friction and wear characteristics were evaluated in a customized cylindrical block-on-ring tribology test according to the ASTM G77 standard. Graphene and fullerene nanoparticles protect contact surfaces by forming a very thin protective film between moving mechanical parts thus resulting in wear and friction reduction. The results showed graphene nanoparticles have improved significantly the tribological performance of SAE-0W20 engine oil.

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Experimental analysis using thermocouple and infrared thermography of the temperature evolution of lithium-ion polymer cells at different charging rates

2025 , A. I. A. Sabandi , Zuradzman Mohamad Razlan , M. F. H. Rani , N. Maruyama , W. K. Wan , Shahriman Abu Bakar , Nur Saifullah Kamarrudin , Mohd Ridzuan Mohd Jamir

An experiment was designed to investigate the temperature revolution of lithium-ion polymer (LiPo) cells using two different approaches, thermocouples and infrared thermography. The cells were charged under controlled conditions at rates of 2.0 A, 4.0 A, 6.0 A, 8.0 A, and 10.0 A. The analysis focused on the maximum surface temperature, temperature changes over time, and surface temperature distribution. The findings revealed that higher charging rates result in increased heat generation, causing greater temperature rises, steeper temperature gradients, and higher maximum temperatures. During the charging process, the study also observed endothermic behavior and uneven temperature distribution across the cells. However, upon completing the charging, the surface temperature became evenly distributed without any critical hotspots. Notably, maximum temperatures were observed in the lower regions of the cells for lower charging rates (2.0 A, 4.0 A, and 6.0 A) and in the upper regions for higher rates (8.0 A and 10.0 A). Additionally, infrared thermography provided a clearer and more precise method for measuring surface temperatures compared to thermocouples, as indicated by experimental uncertainty analysis. IR imaging also showed a faster temperature increase at higher charging rates, offering deeper insights into the thermal characteristics of LiPo cells.

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Determination of effective elastic properties of metal matrix composites with damage particulates using homogenization method

2017-10-29 , Halim S.Z. , Khairul Salleh Basaruddin , Ishak Ibrahim , Mohd Shukry Abdul Majid , Mohd Ridzuan Mohd Jamir

The present study aims to investigate the effect of micro-damage in particulates metal matrix composite on the elastic properties. The micro damage that perhaps could occurs during manufacturing process or due to environmental effects was modelled in three different types, namely shattered, debonded and breakage particulates with variation of volume fraction. The modelling and analysis were conducted based on homogenization theory by utilizing multiscale finite element software (Voxelxon). The results suggest that the elastic properties of metal matrix composite was sensitive to the geometrical defects of its particle.

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Morphology, crystallinity and thermal properties of nanocrystalline cellulose isolated of sisal fiber by acid hydrolysis-ultrasonication

2024-04 , Ferriawan Yudhanto , Venditias Yudha , Mohd Ridzuan Mohd Jamir , Indran Suyambulingam , Pinar Terzioglu , Sudarisman

Nanocrystalline cellulose (NCC) from natural Agave sisalana (Sisal) fibers were isolated using a combination of chemical and mechanical processes. The chemical treatment begins with soaking the fiber in a sodium hydroxide (NaOH) solution with a concentration of 5 wt.% at a temperature of 90°C for 60 minutes. Then following by bleaching (fiber refining) using a hydrogen peroxide solution (H2O2) with a concentration of 3 wt.% (weight), at a temperature of 60°C, and pH of 10 for 30 minutes. It aims to eliminate the presence of hemicellulose and lignin contained in the fiber. Fibrillation Micro into nano Sisal fibers using sulfuric acid (hydrolysis process). Sulfuric acid (H2SO4) with 55 wt.% at temperature 60°C for 30 minutes produced NCC with a diameter of 5±1 nm (D) and a length of 260±10 nm (L), as seen using a TEM (transmission electron microscope). The web-like network structured shape of NCC results in a high aspect ratio (L/D) value is 52. The acid hydrolysis-ultrasonication process produced a high crystallinity index of 78.82% through the XRD (x-ray diffraction) test. The crystallinity and aspect ratio of NCC show that Sisal fiber is a suitable material as a filler for bio-nanocomposite materials. The maximum temperature (Tmax) of NCC decreased by 10°C due to sulfate ions attached to the cellulose structure, causing the thermal stability to drop from 348°C to 338°C.

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Optimization of microwave sol–gel synthesis of N-Ce-AC/TiO₂ for adsorption/photodegradation of tetracycline

2023 , Nur Athirah Awatif Abdul Rahman , Azduwin Khasri , Sabah Ansar , Noor Hasyierah Mohd Salleh , Mohd Ridzuan Mohd Jamir , Raj Boopathy , Achmad Syafiuddin

Nitrogen (N) and cerium (Ce) co-doped titanium dioxide (TiO₂) supported activated carbon (AC) (N-Ce-AC/TiO₂) were synthesized to remove antibiotic tetracycline from aqueous solution via adsorption and photodegradation. The sol–gel technique, aided by microwave radiation, was used to synthesize N-Ce-AC/TiO₂. Central composite design under response surface methodology was used to optimize the variables comprising urea (N source) (A: 0.02–0.20 g), cerium(III) nitrate hexahydrate (Ce source) (B: 0.02–0.20 g), activated carbon (C: 0.10–0.50 g), and microwave power (D: 600–800 W), where the degradation of tetracycline was the response. Characterization of the produced catalyst was carried out by means of X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and the Brunauer–Emmett–Teller method for determining surface-texture parameters. N-Ce-AC/TiO₂ prepared with 0.50 g activated carbon, doped with 0.02 g urea and 0.20 g cerium, and activated at microwave power 600 W for 15 min exhibited 91.08% tetracycline removal when subjected to 7 W of UV irradiation, according to the results of optimal variable preparation.

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Dynamic mechanical analysis of graphene nanoplatelets/glass reinforced epoxy composite

2021-10-25 , Ahmad M.A.A. , Mohd Ridzuan Mohd Jamir , Mohd Shukry Abdul Majid , Cheng Ee Meng , Sulaiman M.H.

This paper presents a study on dynamic mechanical analysis (DMA) of graphene nanoplatelets (GNPs)/glass reinforced epoxy composite. The composite was fabricated by a hand lay-up technique followed by vacuum bagging technique. GNPs weight fraction was 0.5 and 1.5 wt.% for a fixed glass fibre fraction. The test was carried out in terms of storage modulus (E’), loss modulus (E”), and tan δ. The result indicates that 1.5 wt.% GNPs/glass reinforced epoxy composite obtain the maximum value of the dynamic mechanical properties due to the incorporation of GNPs nanofiller. The improved dynamic mechanical properties were related to better interfacial interaction of the nanofiller with the epoxy matrix. The glass transition temperature (Tg) value for 0.5 and 1.5 wt.% GNPs/glass were 62.84 and 66.01 °C, respectively.

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Biodegradability of bioplastic film using different regions of Pennisetum purpureum incorporated with gelatine and chitosan

2022 , T. N. Tuan Rohadi , Mohd Ridzuan Mohd Jamir , Mohd Shukry Abdul Majid , Mohd Hafis Sulaiman

The accumulation of plastic waste and rapid reduction of fossil reserves have pushed the development of packaging towards eco-friendly materials, such as bioplastics. However, most bioplastics are manufactured with chemical additives that are inorganic and entirely nondegradable. Therefore, bioplastics from renewable and biodegradable sources have been developed by incorporating cellulose, gelatine, and chitosan. This paper presents the optical properties, moisture content, swelling behaviour, assessment as packaging materials, and biodegradability tests of bioplastics. The considered bioplastics consisted of raw and cellulose from the whole, fibre, and bark of Pennisetum purpureum, with gelatine and chitosan fabricated using the solution-casting method. Cellulose was isolated using 8 wt% concentration of sodium hydroxide followed by 1.7 wt% concentration of sodium chlorite. The compatibility of fibre-matrix adhesion was improved by including cellulose from WPP, FPP, and BPP into the incorporation of chitosan and gelatine in bioplastics. Nevertheless, improving their optical properties, moisture content, and swelling behaviour had caused bioplastics to be more resistant to microbial activity and have the slower degradation rate.

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Preparation and performance test of PEFB reinforced box waste coated superhydrophobic coating for shoe sole application

2020 , Noraini Marsi , Chow Li Kien , Juhari A Rani , Nor Mazlana Main , Mohd Ridzuan Mohd Jamir , Muhammad Farid Shaari

The study presents preparation and performance test of Palm Empty Fruit Bunches (PEFB) reinforced box waste coated superhydrophobic coating for shoe sole application. The main purpose of this analysis is to determine the optimal composition of PEFB reinforced with box waste for use in shoe soles. In this study, the use of PEFB and box waste is to replace the synthetic materials in the application of the shoe sole. Additionally, environmental problems can be reduced by using waste PEFB as a value-added product rather than biomass waste. Sample preparation involved grinding of PEFB fibers and box waste, blending processes of different PEFB percentages at 20%, 40%, 60% and 80% mixed with 50% box waste. Followed by the process of mixing with epoxy and hardener, and finally coated with superhydrophobic coating using a spray gun method. Epoxy resin and hardener are used as binders for the bonding between the PEFB fiber matrix and the box waste to be applied to the shoe sole. The study was carried out in both mechanical and physical studies. The test for tensile strength showed 40% PEFB reinforced with 50% box waste with 181.36N maximum load and 16.70% of strain. The 40% PEFB composition showed the optimum bursting pressure to 13.62kgf and the abrasion resistance had a lower weight loss of 0.28 g. The 80% higher proportion of PEFB indicates a lower density of 1.06g/cm3 and a higher porosity of up to 0.44%. It is also revealed that 40% of box waste provided the best composition for the application of the shoe soles.

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