Mohd Nazry Salleh
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Preferred name
Mohd Nazry Salleh
Official Name
Mohd Nazry , Salleh
Alternative Name
Salleh, M.
Salleh, M. N.
Main Affiliation
Scopus Author ID
56104356800
Researcher ID
DWB-0139-2022

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Soil Amelioration Effects on Morphology Traits of Upland Rice Root–Shoot and Soil Productivity Under Water Deficit

2023-01-01 , Saleh M. , MohanRaj S. , Roslaili Abdul Aziz , Mohd Nazry Salleh , Rahim S.A.

The main objectives of this research were to determine the effects of ameliorant supplementation on rice root and shoot morphology under water deficit, by studying the impacts of soil conditioners on soil chemical properties. The experiments were arranged in split plots with duplicates for one season in the greenhouse. The treatments consisted of two different types of soil ameliorants and a hybrid mixture of substrates which were natural zeolite, GFOC, hybrid (natural zeolite + GFOC), and control treatments. All the treatments received 60% of water capacity; except for the non-treatment (control) which received 100% of water. The soil chemical properties were observed along with physiological traits of rice root and shoot, including survival rate (%), length (cm), and dry weight (g) of root and shoot of rice crop. It was found that soil chemical properties of the hybrid supplement were within the optimum range with pH 7.42, 4.23% of organic matter, and 121.3 mS/m of electrical conductivity which indicated that plant rice with hybrid is the most effective treatment among the others with the survival rate of 95.3%, has the longest root–shoot length of 69.4 cm and the heaviest root–shoot weight of 64.4 g. The hybrid treatment also demonstrates a strong positive relationship between rice crop morphological features and soil productivity. Therefore, soil ameliorant is proven to boost soil productivity and plant growth by reducing the adverse effects of drought stress.

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Comparison between the Tensile, Water Absorption and Flammability Properties of Recycled High-Density Polyethylene/Rice Husk Composite from Twin-Screw Extruder and Heated Two-Roll Mill

2022-01-01 , Mohd Nazry Salleh , Roslaili Abdul Aziz , Shan C.R. , Luqman Musa , Mohd Fairul Sharin Abdul Razak , Nabialek M. , Jez B.

This study compares the mechanical properties of recycled high-density polyethylene (r-HDPE)/rice husk (RH) composites from a twin-screw extruder and a heated two-roll mill, and the effect of different filler loadings using different melt blending processes on the mechanical properties of r-HDPE/RH composites. Polyethylene-graft-maleic anhydride (MAPE) acts as the coupling agent to enhance interfacial bonding between the fibre and the polymer matrix. The filler loading used was in the range of 10-40 wt. %. In this work, r-HDPE/RH blends were prepared using a twin-screw extruder and a heated two-roll mill. The ratio of 70/30 twin-screw extruder compounded composites significantly showed higher tensile based on improved to about 45.5% at 11 MPa compared to those compounded in the heated two-roll mill. The same ratio showed an increment almost up to 9% of elongation at break. It has also been verified that the higher filler loading used reduced the tensile strength and elongation at break, while the Young's modulus increased. The result was evidenced by the increase in water absorption and longer burning time as the filler loading increased.

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The study and preparation of polyaniline-graphene oxide as robust counter electrode for dye-sensitized solar cells

2022-05-18 , Mohd Fairul Sharin Abdul Razak , Shukor A.A. , Mohd Nazry Salleh , Nawawi W.I. , Norhayati Sabani , Badri A.

The study of alternative materials and platinum-free counter electrodes (CE) for the development of dye- sensitized solar cells (DSSC) has been highlighted nowadays. Polyaniline (PANI) is one of the most common conducting polymers applied in electrochemical energy storage and conversion technologies such as supercapacitors, rechargeable batteries and fuel cells. However, PANI counter electrodes lack long-term stability due to their low surface area and large volume changes during the release of ions. In that regard, this research work focused on the modification of protonated PANI with graphene oxide (GO) at various weight percentages (wt%) in order to obtain robust CE in DSSC. The structure and formation of PANI, GO and PANI/GO were characterized by Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) analyses. The absorption spectra showed all the characteristic bands of GO, PANI(ES) and PANI/GO. Meanwhile, the incorporation of GO into PANI has enhanced the crystallinity of the composite. As a result, power conversion efficiency (PCE%) of the device with PANI/GO 3 wt% as the counter electrode reaches 6.39%. The excellent photoelectric properties, simple preparation procedure and inexpensive cost allow the PANI/GO electrode to be a credible alternative for DSSCs.

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Effects of Soil Conditioners on Rice Growth and Soil Properties Under Water Stress at Vegetative Stage

2023-01-01 , Saleh M. , Liza N.Q.M. , Roslaili Abdul Aziz , Mohd Nazry Salleh , Rahim S.A.

The main objectives of this research were to determine the response of inorganic and organic soil conditioners to phenotypic traits of rice and soil physicochemical properties of soil under water deficit. The experiments were designed in a 2 × 2 factorial with duplicates for 20 weeks in the greenhouse. The treatments consisted of different types of soil ameliorants and a hybrid mixture of substrates which were natural zeolite, GFOC, hybrid (natural zeolite + GFOC), and control. All treatments received 60% water capacity, while control received 100% water after 30 days of sowing (DAS). The soil physicochemical properties were observed along with phenotypic traits of rice such as plant height. The study found that there were slight changes in pH value before and after those treatments, ranging between 4.7 and 5.4 with optimum pH of 4.9 in hybrid treatment. Hybrid treatment soil exhibits a significant increase in moisture content between 5.286 and 7.623%, while control treatment exhibits a decrease in moisture content from 6.835 to 4.934%. When compared to all treatments at 14 DAS (vegetative stage), plants treated with hybrid soil conditioners displayed the highest plant height of 18.3 cm, followed by GFOC (17.8 cm), natural zeolite (16.3 cm), and control (14.6 cm). However, at 28 DAS hybrid and GFOC treatments started to wither and completely died after 49 DAS compared to control and natural zeolite treatments. Nonetheless, there was a fluctuation pattern of plant height for control treatment compared to natural zeolite showing no changes after being put under water stress at 30 DAS. It was found that the soil conditioner helps the plants survive in unfavorable soil conditions with proper nurture to improve rice growth performance.

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Evaluation of mechanical performance and water absorption properties of modified sugarcane bagasse high-density polyethylene plastic bag green composites

2021-11-01 , Chen R.S. , Chai Y.H. , Olugu E.U. , Mohd Nazry Salleh , Ahmad S.

Enormous amounts of plastic wastes are generated worldwide and the approaches related to plastic recycling or reusing have become the research focus in the field of composite materials. In this study, green composites were prepared via melt-blending method using high-density polyethylene (HDPE) sourced from plastic bags as a matrix and sugarcane bagasse (SCB) fiber as reinforcing filler. The effects of fiber loading (5, 10 and 15 wt%) and fiber modification on the mechanical and dimensional stability (weight gain by water absorption) properties of the green composites were investigated. Results showed that the inclusion of SCB fiber into recycled HDPE matrix increased the composite stiffness but decreased the mechanical strength and resistance to water absorption. With the fiber modification through alkali treatment, the mechanical strength was remarkably improved, and the modulus and water absorption of the composites were found to be reduced. From the finding, it can be concluded that the prepared green composites free of coupling agent could add value to the plastic and agricultural wastes, and serve a potential candidate to replace some conventional petroleum-based composites.

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Isolation and characterization of microcrystalline cellulose extracted from banana fiber in poly(lactic acid) biocomposite produced from solvent casting technique

2020-11-24 , Luqman Musa , Vesuanathan, Tamil Arasi , Mohd Nazry Salleh

The purpose of this project is to extract Microcrystalline Cellulose (MCC) from Banana fiber to produce Poly(Lactic Acid)/Microcrystalline Cellulose, (PLA/MCC) biocomposite film using a solvent casting technique. The initial phase is the production of MCC from Banana fiber by involving three steps; alkaline treatment, bleaching and acid hydrolysis. MCC produced from the different concentration of Nitric acid in the acid hydrolysis process, were used to analyze the morphological and crystalline properties using SEM and XRD respectively. MCC produced from the higher concentration of Nitric acid shows good morphological properties and higher % crystallinity. Then, MCC compounded into PLA with different filler loading to produce PLA/MCC biocomposite film using a different solvent which is Chloroform and Dichloromethane. Results show that lower MCC loading, induces good filler matrix interaction and this evidences by the improvement of the Tensile strength and Young's Modulus, as well as shows improvement in loss factor and storage modulus which studied from DMA. Moreover, the addition of MCC slightly improved the thermal stability of PLA. From using a different solvent to produce PLA/MCC biocomposite film, Dichloromethane solvent improves the tensile strength and Young's modulus of biocomposite film, while Chloroform reduces the tensile properties of biocomposite film.

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Pencirian dan potensi Dolomit Perlis sebagai pengisi dalam produk komposit Termoset

2007 , Mohd Nazry Salleh

Dolomit merupakan sejenis mineral yang didapati dengan banyaknya di negeri Perlis. Negeri Perlis merupakan antara pengeluar terbesar dolomit di Malaysia. Kajian ke atas dolomit dilakukan untuk menambah nilai dolomit ini kepada potensi kegunaan yang lebih efisien. Dolomit Perlis yang digunakan dalam penyelidikan ini diperolehi daripada pembekal Tasuh Kuari Sdn. Bhd. Pencirian dolomit Perlis dilakukan dengan menggunakan peralatan Malvern Mastersizer bagi analisis saiz partikel, kajian morfologi menggunakan SEM dengan dilengkapi penganalisa spektrometer serakan tenaga sinar-X (SEM-EDS), penentuan fasa mineral dengan menggunakan XRD, analisis komposisi kimia menggunakan XRF dan analisis terma menggunakan TGA. Selain itu, sifat-sifat fizikal dolomit Perlis ditentukan melalui analisis ketumpatan pukal dan ujian keliangan, analisis penyerapan air dan ujian kehilangan pencucuhan. Daripada analisis yang dijalankan, unsur utama yang terdapat pada dolomit adalah kalsium dan magnesium. Kajian morfologi menunjukkan dolomit Perlis dan dolomit Ipoh mempunyai bentuk yang tidak seragam dan cenderung untuk membentuk pecahan pada butiran yang tidak seragam itu. Penentuan fasa mineral yang hadir pada dolomit Perlis ialah kalsium magnesium karbonat, CaMg(CO3)2 dalam sistem kristal trigonal-rombohedral dan kumpulan ruang ialah R-3. Corak belauan sinar-x bagi sampel dolomit Perlis dan dolomit Ipoh didapati hampir sama dan ini menunjukkan persamaan dari segi strukturnya. Analisis terma menggunakan analisis termogravimetrik (TGA) menunjukkan dolomit Perlis akan mengalami penguraian pada dua peringkat apabila dikenakan suhu yang tinggi. Pada peringkat pertama penguraian ini berlaku pada suhu 752.54 °C dan diikuti dengan peringkat kedua iaitu 930.52 °C. Berdasarkan analisis XRF yang dijalankan, dolomit Perlis mengandungi komposisi utama 31.5 % kalsium oksida (CaO) dan magnesium oksida (MgO) sebanyak 22.65 %. Dolomit Perlis juga mengandungi komposisi logam-logam oksida seperti aluminium oksida (Al2O3), ferum oksida (Fe2O3), silikon oksida (SiO2) dan natrium oksida (Na2O). Ketumpatan pukal bagi sampel dolomit Perlis dapat ditentukan dengan menggunakan prosedur ASTM C373 daripada prinsip Archimedes dan menunjukkan bacaan ketumpatan pukal adalah 2.7146 g/cm3. Dolomit Perlis secara semulajadinya adalah bahan berongga dengan pelbagai darjah keliangan. Keputusan daripada ujian keliangan menunjukkan peratusan bagi keporosan sebanyak 1.27 % manakala peratusan kehilangan pencucuhan oleh sampel dolomit Perlis adalah 28.31 %. Potensi dolomit Perlis sebagai pengisi alternatif yang murah dan mesra alam sekitar di dalam termoset epoksi turut dikaji. Penghasilan komposit menggunakan dolomit Perlis sebagai bahan mentah yang utama dan resin epoksi sebagai pengikat menggunakan konsep komposit muatan berpengisi tinggi. Penentuan sifat-sifat bagi termoset epoksi terisi dolomit Perlis melibatkan pengujian mekanikal seperti ujian hentaman, ujian pelenturan dan ujian tegangan. Daripada eksperimen yang dijalankan didapati sampel C mencatatkan bacaan kekuatan hentaman yang paling tinggi iaitu 1133.33 J/m. Kekuatan pelenturan dan modulus pelenturan menurun dengan penurunan saiz pengisi yang dimasukkan dalam penyebatian komposit manakala nilai kekuatan tegangan dan modulus tegangan meningkat dengan peningkatan saiz pengisi yang digunakan. Peratusan bagi pemanjangan pada takat putus sampel C menunjukkan peningkatan iaitu 4.65 % dengan penurunan saiz pengisi yang digunakan. Ujian pembakaran dalam relau mendapati sampel B memberikan penyusunan yang optimum antara resin dan pengisi. Ini dapat dibuktikan oleh mikrograf SEM di mana sampel B memberikan interaksi pengisi dan matriks yang lebih baik.

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Mechanical properties and water absorption behaviour of hybrid fibre with recycle high density polyethylene bio-composite

2024-04-01 , Juhardi N.N.B. , Mohd Nazry Salleh , Luqman Musa , Roslaili Abdul Aziz

Hybrid fibre which is rice husk (RH) and softwood were used as organic fibre with different compositions which are 10%, 20% and 30%. Whereas polymer matrix that used in this project is recycled high density polyethylene (r-HDPE) and ethylene glycidyl methacrylate (EGMA) used as compatibilizer in the composite. These materials were pre-mixed using a twin screw extruder and then shaped using hot compression in order to obtain a dumbbell and rectangular shape for Izod impact test, tensile and flexural test using Instron machine. Another test was carried out with a focus to observe the behaviour of water absorption in the composite. Testing resulted in decreasing tensile strength, elongation at break and impact stress upon an increase of fibre content. However, there are slight increases in the result of Young's modulus, water absorption, flexural strength and modulus.

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Removal of copper and magnesium cations from aqueous solutions by clinoptilolite zeolite adsorption

2021-05-24 , Roslaili Abdul Aziz , Fauzi N.F.N. , Mohd Nazry Salleh , Saleh M.

The aim of this study is to determine the potentials of clinoptilolite zeolite in removing selected heavy metals, that are copper and magnesium in aqueous solutions. The removal of both metal cations has been studied by using the batch techniques. Three experimental variables were carried out under predetermined conditions of contact time (20 – 100 minutes), effect of dosage (0.20 – 1.00 gram), and effect of pH solution (pH 2 to 10). Adsorption capacity of zeolite towards heavy metal removal was then determined at various initial concentrations of metal ions between 20 to 100 ppm. Results obtained shows that adsorption of Cu2+ and Mg2+ on zeolite has been shown to depend significantly on the pH, adsorbent amount and contact time. The significant value of pH was reached at pH 6, followed by 1 hour of contact time for 1 gram of adsorbent; for both metal ions studied. Studies on the rate of uptake of heavy metal ions by the zeolite indicated that the process was quite rapid and maximum adsorption occurred within the first hour of contact. The results show that high silica zeolite such as clinoptilolite is a promising adsorbent as they combine high adsorption capacities and molecular sieve properties.

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The use of ground & ultrasonicated dolomite (GUD) for improving the tensile performance of Poly (ethylene-co-vinyl acetate) copolymer composite

2021-11-12 , Fauzi A.A.A. , Azlin Fazlina Osman , Khairul Anwar Abdul Halim , Mustafa Z. , Alakrach A.M. , Mohd Nazry Salleh

The combination of the organic and inorganic materials to fabricate a new form of material called 'composite' has been performed since several decades ago. However, the strategy to improve the homogeneity of the resultant composite system is still being the main focus of current research. In this study, dolomite and poly (ethylene-co-vinyl acetate) (PEVAc) were employed as filler and matrix, respectively. Dolomite was ground and ultrasonicated before being used as filler. It can be observed that the size of dolomite particles has been reduced significantly upon the grinding and ultrasonication processes. The effect of ground and ultrasonicated dolomite (GUD) addition on the mechanical performance of the PEVAc copolymer was investigated. Results indicate that the GUD filler has successfully increased the tensile strength, elongation at break, modulus of elasticity and tensile toughness of the PEVAc copolymer when being employed in 1 wt%. However, the use of higher content of GUD resulted in the decreasing trend of those properties. This shows that the ground and ultrasonicated dolomite with smaller and higher surface area particles than its pristine form could bring improvement to the mechanical performance of the copolymer when being used in low loading as it can be more easily dispersed in the copolymer matrix.

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