Rosniza Hamzah
Thumbnail Image
Preferred name
Rosniza Hamzah
Official Name
Rosniza, Hamzah
Alternative Name
Rosniza, H.
Hamzah, Rosniza
Rosnizah, R.
Hamzah, R.
Main Affiliation
Scopus Author ID
55370656600
Researcher ID
AAD-3070-2019

Research Output
Now showing 1 - 10 of 10
  • Publication
    Flexural and morphology properties of rHDPE/BF composites: effect of surface modification of bamboo filler by NaOH treatment
    (AIP Publishing, 2020)
    Aini Asifa Ahmad Kamal
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    N. A. Latip
    ;
    M. U. Umar
    This study is about the effect of alkaline treatment on bamboo filler reinforced with recycle high density polyethylene (rHDPE) composites. The alkaline treatment was done by sodium hydroxide (NaOH) at three different concentrations (2.5 wt.%, 5.0 wt.% and 7.5 wt.%) for two hours at room temperature. The bamboo filler and rHDPE was compound with the extrusion method and the granule was form. The granule of rHDPE/bamboo filler composites was inject by using injection molding to produce the sample of end product. The samples of rHDPE/bamboo filler was tested using conventional universal testing machine. Field emission electron microscopy (FESEM) was used to analyze the morphology of filler and Fourier Transform Infrared Spectroscopy (FTIR) for characterization of functional group in the filler and composites. The result showed that the flexural properties of rHDPE/bamboo filler composites were slightly affected by the alkaline treatment on the bamboo filler.
  • Publication
    Current method on spalling repair work in ages building
    (AIP Publishing, 2020)
    N. A. Latip
    ;
    M. U. Umar
    ;
    Nik Noriman Zulkepli
    ;
    Izwan Johari
    ;
    Omar S. Dahham
    ;
    Rosniza Hamzah
    ;
    Shahrizal Nazri
  • Publication
    The effects of different bamboo filler loading on HDPE/BF composites and rHDPE/BF composites: flexural and morphology
    (AIP Publishing, 2020)
    Aini Asifa Ahmad Kamal
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    M. U. Umar
    ;
    Izwan Johari
    In this article, wood plastic composite (WPC) is a composite material made up from bamboo as filler (BF) and high-density polyethylene and recycle high density polyethylene (HDPE) plastic as matrix. This research was conducted in order to investigate the mechanical properties of HDPE/BF and rHDPE/BF composites with different filler loading (5 wt.%, 10 wt.%, 15 wt.% and 20 wt.%). From the morphology test by using Field Emission Scanning Electron Microscopy (FESEM), the bonding between filler and matrix to 10 wt.% show a positive effect and have a great bonding. The, Fourier Transform Infrared Spectroscopy (FTIR) used to analyze the functional group in the bamboo filler which contain lignin, cellulose and hemicellulose. The flexural test was conducted to study the mechanical properties of rHDPE/BF composites. Based on the flexural test result, the HDPE/BF and rHDPE/BF composites with 10 wt.% BF show the highest flexural result as decreasing filler loading will reduce the strength of the composites.
  • Publication
    Sawdust short fiber reinforced epoxidized natural rubber: insight on its mechanical, physical, and thermal aspects
    (Tech Science Press, 2020)
    O. S. Dahham
    ;
    Nik Noriman Zulkepli
    ;
    Haliza Jaya
    ;
    Rosniza Hamzah
    ;
    M. U. Umar
    ;
    I. Johari
    In this work, Epoxidized natural rubber/sawdust short fiber (ENR-50/ SD) composites at different fiber content (5, 10, 15 and 20 phr) and size (fine size at 60–100 μm and coarse size at 10–20 mm) were prepared using two-roll mill and electrical-hydraulic hot press machine respectively. Curing characteristics, water uptake, tensile, morphological, physical, and thermal properties of the composites were investigated. Results indicated that the scorch time and cure time became shorter whereas torque improved as SD content increase. Though the decline of tensile strength and elongation at break values, modulus, hardness and crosslinking density have shown enhancements with the increasing of SD content. The water uptake percentage of all samples has shown an increasing as SD content increase. However, the low SD content, particularly fine size have presented lower water uptake. The temperature of weight% loss (5 and 50 wt% loss) of 5 phr SD (low content) have recorded higher temperature compared to 20 phr SD (high content) in the rubber composites, which indicated higher thermal stability. The fine size of SD has recorded better overall properties than SD coarse size at same loading in the rubber composites.
  • Publication
    Surface modification of bamboo filler by acid treatment on flexural and morphology rHDPE/BF composites
    (AIP Publishing, 2020)
    Aini Asifa Ahmad Kamal
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    M. U. Umar
    ;
    Izwan Johari
    This study main objective is to compare the effect of different concentration on surface treatments of natural fibrous material, bamboo filler (BF) by using acetic acid (CH3COOH). The application of surface treatment on natural fibrous material can improve the compatibility with polymer matrix material. Different concentration on surface treatment by using CH3COOH were applied at 0 wt.%, 2.5 wt.%, 5.0 wt.% and 7.5 wt.%. After the application of surface treatments, the fibrous materials were combined with polymer matrix material, particularly recycled high density polyethylene (rHDPE), by twin screw extruder and injection moulding. The mechanical test was performed to evaluate the influence of different concentration of surface treatments on rHDPE/BF composites. The experimental results shows that the surface treatment by using CH3COOH on BF strongly affect the mechanical properties of the final composite materials by increasing the flexural strength ultimately at 5.0 wt.% concentration CH3COOH with the highest flexural strength. The morphology of treated BF by using Field Emission Scanning Electron Microscope (FESEM) show that the lignin, wax and other impurities was removed from BF.
      9  1
  • Publication
    The effects of ionic liquid (ILs) as additive on recycled high-density polyethylene reinforced bamboo filler composites
    (AIP Publishing, 2020)
    Aini Asifa Ahmad Kamal
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    N. A. Latip
    ;
    M. U. Umar
    The study aim to improve the mechanical properties of recycled high density polyethylene (rHDPE) reinforced with bamboo filler (BF) by incorporating support of ionic liquids (ILs). The rHDPE/BF composites were produced by using injection molding process with different types of ILs in imidazolium based at three concentrations which is 0.2, 0.4 and 0.6 wt.%. The rHDPE/BF with ILs was compound with twin-screw extruder and undergoes injection molding process. The effects of ILs were characterized for mechanical, chemical and morphological properties of composites using tensile test, fourier transform infrared spectroscopy (FTIR) and field emission scanning electron microscope (FESEM). The results indicated that mechanical properties of the composites were improved by addition of ILs as additive. From the FTIR spectroscopy test, the presences of ILs were detected in the composites as it will improve the properties of composites. Finally, FESEM of fractured surface revealed better adhesion between the filler and matrix with the presence of additives.
      2  6
  • Publication
    Flexural and impact properties of rHDPE/BF composites in presence of ionic liquid (ILs)
    (AIP Publishing, 2020)
    Aini Asifa Ahmad Kamal
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    M. U. Umar
    ;
    Izwan Johari
    In this study, the ionic liquid as additive on recycle high density polyethylene/bamboo filler (rHDPE/BF) using different concentration (0.2 wt.%, 0.4 wt.% and 0.6 wt.%) of 1-ethyl-3-methylimidazolium thiocyanate (EMImSCN) and 1-methyl-3-octylimidazolium chloride (OMImCl) ionic liquid was performed. The bamboo filler were reinforced with in rHDPE matrix using extrusion method and undergo injection molding process for sample preparation. For comparison purpose, rHDPE/BF composites with both of ionic liquid were tested under flexural and charpy impact test respectively. Result indicate that the present of 0.4 wt.% with OMImCl of ionic liquid on rHDPE/BF composites with better matrix/filler interlocking characteristics shows better mechanical performance compared with EMImSCN ionic liquid on rHDPE/BF composites. The field emission scanning electron microscope (FESEM) was used to analyze the fractured surface on the impact test. The FESEM test revealed fractured surface of rHDPE/BF composites has better adhesion between the filler and matrix with the presence of additives as the gaps between filler and matrix was reduced.
      1  7
  • Publication
    The effects of electron beam irradiation on LLDPE/CY biocomposites: tensile and morphology properties
    (AIP Publishing, 2020)
    N. A. Faris
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    M. U. Umar
    ;
    N. A. Latip
    The effect of electron beam irradiation on the properties of LLDPE/CY biocomposites were studied. In powder form, CY was mixed with linear low-density polyethylene (LLDPE), prior to being fed into a twin-screw extruder and subsequently into an injection moulding machine to produce LLDPE/CY biocomposite dumbbell specimens. LLDPE/CY biocomposites with composition ratios of 5% to 20 wt% were studied. Electron beam irradiation (EBI) was applied on the LLDPE/CY biocomposites for crosslinking purposes, using a 1.5 MeV electron beam accelerator within the dosage range of 0-150 kGy. The tensile of the composites were investigated and tensile fractured surfaces were observed by using scanning electron microscope (SEM). Based on the results, the radiation at 100 kGy caused the optimum absorption by the LLDPE/CY biocomposites.
      1  10
  • Publication
    Identification of timber material defect using VIA on selected traditional Malay house: case study on Tuan Hj Hashim Itam (Kerani) historical house at Penang, Malaysia
    (IOP Publishing, 2020)
    N. A. Latip
    ;
    M. U. Umar
    ;
    Nik Noriman Zulkepli
    ;
    Izwan Johari
    ;
    Omar S. Dahham
    ;
    Rosniza Hamzah
    ;
    Nur Intan Raihana Ruhaiyem
    The timber or wooden base is a significant material in traditional Malay houses from structure to architecture craftsmanship of the buildings. Due to the material natural condition the problem perceive to be very particularly dealing with common wood base treat namely rot, decay and broken material. The study purpose is to identify existing defect facing by the traditional house via the house component namely roof system, ceiling, wall, beam, column, floor boards, balustrade and stairs. Visual impact assessment (VIA) method used to identifies defect area followed by natural infrared heat radiation test to the defective area. The preliminaries finding indicates the timber species namely Intsia palembanica Miq or well known in local community as a 'Merbau', with a low surface temperature range in 25.1°C at minimum census compare to surrounding census at 31.2°C. Due to the huge gap in surface calibration leads to consistent treat in dampness activity causes rotten and decay in timber material in the houses.
      1  9
  • Publication
    The influences of soil burial assessment on linear low-density polyethylene/Cyperus odoratus biocomposite
    (AIP Publishing, 2020)
    N. A. Faris
    ;
    Nik Noriman Zulkepli
    ;
    Sam Sung Ting
    ;
    Rosniza Hamzah
    ;
    Omar S. Dahham
    ;
    M. U. Umar
    ;
    N. A. Latip
    The potential of Cyperus Odoratus (CY) as a filler was studied. In powder form, CY was mixed with linear low density polyethylene (LLDPE), prior to being fed into a twin screw extruder and subsequently into an injection moulding machine to produce LLDPY/CY biocomposite dumbbell specimens. LLDPE/CY biocomposites with composition ratios of 5% to 20 wt% were studied. The natural soil burial of LLDPE/CY biocomposites were carried out for 1 year and the samples were collected and measured after 3, 6, and 12 months for degradability tests, by means of tensile tests and morphological study. Within the 1-year exposure to soil burial test, the tensile strength and Eb of the composites decreased, while their Young's modulus increased. The presence of CY filler in the composites significantly accelerated the degradation of the LLDPE/CY biocomposites.
      8  3