Nur Farahiyah Mohammad
Thumbnail Image
Preferred name
Nur Farahiyah Mohammad
Official Name
Nur Farahiyah, Mohammad
Alternative Name
Mohammad, N. F.
Nur Farahiyah, Mohammad
Mohammad, N.
Main Affiliation
Scopus Author ID
36872346600
Researcher ID
X-6539-2019

Research Output

Filters

2
1 1
Reset filters

Settings
Now showing 1 - 2 of 2
  • Publication
    Properties of carbon nanotubes-calcium carbonate hybrid filled epoxy composites
    ( 2020-01-01)
    Siti Shuhadah Md Saleh
    ;
    Suhaimi S.M.
    ;
    Md Akil H.
    ;
    Nur Farahiyah Mohammad
    Carbon nanotubes (CNTs) have a great potential to be used as filler to enhance the mechanical properties of polymer composites due to excellent properties. However, CNTs have limitation of difficult to disperse in polymer matrix. The hybridization of CNTs and inorganic fillers can improve the dispersion and combine their properties in polymer composites. In the present work, the properties of the epoxy composites filled with carbon nanotube-calcium carbonate (CNTs-CaCO3) hybrid, at various filler loading (i.e., 1-5 wt.%) were studied. The CNTs-CaCO3 hybrid fillers were prepared by physically mixing (PHY) method and chemical vapor deposition (CVD) method. The tensile properties and hardness of both composites were investigated at different weight percentages of filler loading. The CNTs-CaCO3 CVD hybrid composites showed higher tensile strength and hardness than the CNTs-CaCO3 PHY hybrid composites. This increase was associated with the homogenous dispersion of CNT–CaCO3 particle filler. The morphological studies of fracture surfaces after tensile test by means of SEM showed homogenous dispersion of CNTs-calcium carbonate CVD hybrid in epoxy matrix. The result shows that the CNTs-calcium carbonate CVD hybrid composites are capable in increasing tensile strength by up to 116.4%, giving a tensile modulus of 40.3%, and hardness value of 39.2% as compared to a pure epoxy.
  • Publication
    Effect of surfactant concentrations on pore characteristics of mesoporous carbonated Hydroxyapatite prepared by soft-templating hydrothermal method
    (Universiti Malaysia Perlis (UniMAP), 2018-11)
    Nur Farahiyah Mohammad
    ;
    R. Othman
    ;
    A. A. Abdullah
    ;
    F. Y. Yeoh
    Mesoporous carbonated hydroxyapatite is a promised material for the application in drug delivery. Mesoporous carbonated hydroxyapatite (CHA) was synthesised through a hydrothermal co-precipitation method using different concentration (1.7, 7, 10 and 14 mM) of non-ionic surfactant P123 as a pores template. The crystalline phase, chemical composition, morphology and pore size distribution of mesoporous CHA were analysed using various materials characterisation techniques. The presence of mesopores as an array of pore channels in the synthesised sample were confirmed using transmission electron microscope. The optimum pore characteristics (i.e. surface area = 78 m2g-1, pore size = 27 nm and pore volume = 0.542 nm) of mesoporous CHA was obtained when surfactant concentration (1.7 mM) was maintained closed to critical micelle concentration (CMC), 0.0044 mM.