Roslaili Abdul Aziz
Thumbnail Image
Preferred name
Roslaili Abdul Aziz
Official Name
Roslaili, Abdul Aziz
Alternative Name
Aziz, R. A.
Abdul Aziz, Roslaili
Abdul Aziz, R.
Main Affiliation
Scopus Author ID
55993518600

Research Output

Filters

11
5
11
Reset filters

Settings
Now showing 1 - 10 of 11
  • Publication
    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.
  • Publication
    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.
  • Publication
    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.
  • Publication
    Bioaccumulation and Translocation of Heavy Metals in Paddy (Oryza sativa L.) and Soil in Different Land Use Practices
    ( 2023-09-01)
    Roslaili Abdul Aziz
    ;
    Yiwen M.
    ;
    Saleh M.
    ;
    Mohd Nazry Salleh
    ;
    Subash Chandra Bose Gopinath
    ;
    Giap S.G.E.
    ;
    Chinni S.V.
    ;
    Gobinath R.
    Rice tends to accumulate heavy metals present in soil that have been introduced by human activities and pass them up the food chain. The present study aimed to evaluate the accumulation of selected trace elements (Cu, Zn, and Pb) in paddy and soil and the transfer of these metals from soil to rice by analysing the bioconcentration factor (BCF), bioaccumulation factor (BAF), and translocation factor (TF) of heavy metals in paddy (Oryza sativa L.) and soil. Samples of matured paddy and the substrates were collected from three different areas located near a rural point (RP), a transportation point (TP), and an industrial point (IP). Heavy metal concentrations present in the soil and various parts of the plants were ascertained using an atomic absorption spectrophotometer (AAS). Cu, Zn, and Pb accumulation in the soil were detected in increasing orders of RP > TP > IP, IP > TP > RP, and IP > RP > TP, respectively. The BCFshoot, BAF, and transfer factor of both Zn and Pb from soil to rice were detected in the order of TP > IP > RP, which was different from Cu, where BCFshoot and TF showed the order of RP > IP > TP but the BAF indicated IP > RP > TP. TF > 1 was discovered for Zn and Pb at the TP, and for Cu at the RP, which could be attributed to the TP’s strongly acidic soil and Cu’s abundance in the RP’s soil. Paddy height and yield traits were the most significant at the IP site, showing the highest number of fertile spikelets, the average weight of a 1000-paddy spikelet, and the harvest index (0.56). These findings can be related to the normal range of Zn and Pb found in rice plants that support growth. Thus, the findings of this study demonstrated that soil properties and metal abundance in soil from certain land use practices can partially influence the mobility and transfer of metals through soil–plant pathways.
  • Publication
    Removal of iron and manganese from Palm Oil Mill Effluent (POME) using activated clinoptilolite zeolite
    ( 2021-05-24)
    Roslaili Abdul Aziz
    ;
    Li C.K.
    ;
    Mohd Nazry Salleh
    ;
    Saleh M.
    The adsorption capacity of activated clinoptilolite zeolite for the removal of heavy metal ions; iron Fe(III) and manganese Mn(II) from palm oil mill effluent (POME) was investigated in this batch sorption study. The physicochemical properties of both raw clinoptilolite zeolite and POME effluent were first characterized before the modification of the zeolite is made, chemically and physically. The raw filtered POME has an initial pH of 4.56 which was acidic, whereas the natural zeolite has a slightly alkaline pH at 7.52. The effects of pH (5, 7 and 9), sorbent dosage (15, 20 and 25 g in 125 ml of effluent), contact time (15, 30, 45, 60, 120, 150, 180 and 200 minutes) and agitation speed (120, 150, 180 and 200 rpm) on the sorption of heavy metal ions were evaluated. The concentration of heavy metals was analyzed using AAS. The concentration of heavy metal ions for each parameter has decreased significantly after batch study. The adsorption of heavy metal ions increased with the increasing of pH and adsorbent dosages. Optimum percentage of metal removal and the amount of metal ions adsorbed by the zeolite were determined at 85% of Fe(III) and almost 92% of Mn(II) in the experiments.
  • Publication
    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.
  • Publication
    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.
  • Publication
    Effect of surface treatment on water absorption of rice husk reinforced recycled high density polyethylene (RHDPE) composites.
    ( 2021-05-03)
    Mohd Nazry Salleh
    ;
    Roslaili Abdul Aziz
    ;
    Luqman Musa
    ;
    Mohamad Syahmie Mohamad Rasidi
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    Hong L.Y.
    The goal of this study was to investigate the effect of surface treatment on rice husk reinforced recycled high density polyethylene (rHDPE) composites. Three types of surface treatments on rice husk were carried out which were maleated treatment, alkali treatment and acrylic acid treatment. Water absorption test was examined in distilled water. It showed that the lower the loading of rice husk, the lower the water absorption percentage. Maleated treatment on rice husk reinforced rHDPE has the highest resistance of water absorption tendency. Scanning electron microscope analysis of the composites showed that the lower the rice husk loading, the better the interfacial bonding of the composites. Maleated treatment of rice husk also showed that there is no gaps formed in the structure.
  • Publication
    Effect of Surface Treatment on Mechanical Properties of Rice Husk Reinforced Recycled High Density Polyethylene (rHDPE) Composites
    ( 2020-11-24)
    Mohd Nazry Salleh
    ;
    Roslaili Abdul Aziz
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    Luqman Musa
    ;
    Ying H.L.
    The aim of this work was to investigate the effect of surface treatment on rice husk reinforced recycled high density polyethylene (rHDPE) composites. Three types of surface treatment on rice husk were carried out which were maleated treatment, alkaline treatment and acrylic acid treatment. The characteristics and mechanical properties of the composites were analysed. The results for all treatments showed that tensile strength and break elongation of composites decreased significantly when the rice husk filler loading increased. Further findings showed that maleated treatment on rice husk can further enhance the mechanical properties due to the present of ester bond formed in FTIR analysis.
  • Publication
    Effect of thermally treated rice husk on the rice husk/LDPE composites with and without MAPE
    ( 2022-05-18)
    Nurliyana Nasrin Juhardi
    ;
    Mohd Nazry Salleh
    ;
    Roslaili Abdul Aziz
    ;
    Luqman Musa
    ;
    Mohd Fairul Sharin Abdul Razak
    ;
    Hanafi I.
    In this project, extruded rice husk (RH) / low density polyethylene (LDPE) with and without maleic anhydride (MAPE) were thermally treated at temperatures of 105C and 125C. The duration of annealing was carried out to one and three hours before going through to the injection moulding to get the dumbbell shape for tensile testing. From the testing, the trend of results obtained where tensile and modulus of elasticity of RH/LDPE increase with temperature of 125 C which are 5 MPa and 261 MPa respectively. However, the elongation at break shows a reduction value where 105 C temperature is 12% while 125C is 8%. Results obtained for RH/LDPE with and without MAPE show the composites with added MAPE have better tensile strength and modulus of elasticity. Meanwhile, the elongation at break of composites with MAPE is lower than composites without MAPE.
      1