Kamarudin Hussin
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Preferred name
Kamarudin Hussin
Official Name
Hussin, Kamarudin
Alternative Name
Hussin, K.
Hussin, Kamarudin
Kamarudin, Hussin
Kamaruddin, Hussin
Kamaruddin, H.
Husin, Kamarudin
Main Affiliation
Scopus Author ID
16642513600
Researcher ID
FZF-9851-2022

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  • Publication
    Article the effects of various concentrations of naoh on the inter-particle gelation of a fly ash geopolymer aggregate
    ( 2021-03-01)
    Alida Abdullah
    ;
    Kamarudin Hussin
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Zarina Yahya
    ;
    Sochacki W.
    ;
    Rafiza Abd Razak
    ;
    Błoch K.
    ;
    Fansuri H.
    Aggregates can be categorized into natural and artificial aggregates. Preserving natural resources is crucial to ensuring the constant supply of natural aggregates. In order to preserve these natural resources, the production of artificial aggregates is beginning to gain the attention of researchers worldwide. One of the methods involves using geopolymer technology. On this basis, this current research focuses on the inter-particle effect on the properties of fly ash geopolymer aggregates with different molarities of sodium hydroxide (NaOH). The effects of synthesis parameters (6, 8, 10, 12, and 14 M) on the mechanical and microstructural properties of the fly ash geopolymer aggregate were studied. The fly ash geopolymer aggregate was palletized manually by using a hand to form a sphere-shaped aggregate where the ratio of NaOH/Na2SiO3 used was constant at 2.5. The results indicated that the NaOH molarity has a significant effect on the impact strength of a fly ash geopolymer aggregate. The highest aggregate impact value (AIV) was obtained for samples with 6 M NaOH molarity (26.95%), indicating the lowest strength among other molarities studied and the lowest density of 2150 kg/m3 . The low concentration of sodium hydroxide in the alkali activator solution resulted in the dissolution of fly ash being limited; thus, the inter-particle volume cannot be fully filled by the precipitated gels.
      1
  • Publication
    Study on the emulsion stability of triproplyne glycol diarcrylate in water
    ( 2023-04-24)
    Shirajuddin S.S.
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Ghazali C.M.R.
    ;
    Kamarudin Hussin
    ;
    Rahman M.F.A.
    This study addresses the emulsion stability of tripropylene glycol diacrylate (TPGDA) in water. Generally, the oil-in-water (O/W) emulsion is incompatible and tends to separate to an oil and water layer due to the difference in density of both oil and water. This could lead to the occurrence of flocculation and coalescence. However, the emulsion can be controlled with the presence of the right amount of stabilizers such as surfactants (emulsifiers). The emulsion stability of TPGDA emulsion in the presence of Tween 20 (Tw-20) as a surfactant was studied with respect to its concentration effect ranging between 0.1 wt% to 3 wt%. The emulsion was monitored over time by phase separation and creaming index, and later characterized by Fourier Transform Infrared Spectroscopy (FTIR) and optical microscope. The results showed that the 0.4 wt% surfactant concentration of Tw-20 is the optimum parameter with the longest stability of 24 hours and a creaming index of 0%, which is enough for an ideal emulsion. The strong band observed at 1632 cm-1 due to the C=C band as well as the absorbance peak at 1723 cm-1 indicated the presence of characterized peaks of C=O band from the acrylate group. The FTIR spectra displayed the interaction of TPGDA and Tw-20, proving that the emulsion is fully mixed and stabilized. The optical microscopy microstructure also showed a supporting result of no droplet aggregation and flocculation in the TPGDA emulsion with the presence of 0.4% of Tw-20 surfactant. This information about Tw-20 is useful, making it a promising surfactant for enhancing the creaming stability of the TPGDA emulsion.
      2
  • Publication
    STUDY ON THE EMULSION STABILITY OF TRIPROPYLENE GLYCOL DIACRYLATE IN WATER
    ( 2023-01-01)
    Shirajuddin S.S.M.
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Ghazali C.M.R.
    ;
    Kamarudin Hussin
    ;
    Rahman M.F.A.
    Oil-in-water emulsion is thermodynamically unstable system that undergoes destabilization with time. The tripropylene glycol diacrylate (TPGDA) monomer which can potentially to increase the crosslink density of polymer blends is unstable in water due to its low water solubility properties. However, the stability of TPGDA emulsion could be improved by adding an adequate amount of surfactant. This study addresses the effect of different Tween 20 (surfactant) concentration on emulsion stability of TPGDA. Model emulsion ranging between 0.1 wt% to 3 wt% of Tween 20 and a control were prepared using heavy duty homogenizer. The emulsion was characterised by FTIR, microstructure analysis, phase separation observation and creaming index during storage time. Emulsion containing 0.4 wt% Tween 20 showed the longest stability at 24 hours and a creaming index of 0%, which is enough for an ideal emulsion. The FTIR spectra displayed the interaction of TPGDA and Tw-20, proving that the emulsion is fully mixed and stabilized. The results are further supported by optical microscopy, which observed no droplet aggregation and flocculation in the TPGDA emulsion with the presence of 0.4 wt% of Tw-20 surfactant. This information about Tw-20 is beneficial, making it a promising surfactant for enhancing the emulsion stability of the TPGDA emulsion.
      1