Syarifah Nuraqmar Syed Mahamud
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Preferred name
Syarifah Nuraqmar Syed Mahamud
Official Name
Syarifah Nuraqmar, Syed Mahamud
Alternative Name
Mahamud, S. N.S.
Syed Mahamud, Syarifah Nuraqmar
Main Affiliation
Scopus Author ID
57220196221

Research Output
Now showing 1 - 2 of 2
  • Publication
    Tensile and morphology properties of polylactic acid/ treated typha latifolia composites
    ( 2013)
    Muthmirah Ibrahim
    ;
    Jalilah Abd Jalil
    ;
    Syarifah Nuraqmar Syed Mahamud
    ;
    Yusrina Mat Daud
    ;
    Salmah Husseinsyah
    ;
    Muhammad Rafi’ Yahya
    This paper is focused to investigate the effect of treated natural fiber (typha latifolia) content on tensile and morphology properties of polylactic acid (PLA)/treated typha latifolia (T-TyLa) composites. The composite was compounded using heated two roll mill and the composite samples were prepared through compression molding. Tensile test and scanning electron microscopy (SEM) analysis were carried out to study the properties of PLA/T-TyLa composites. The results showed that the tensile strength of PLA/T-TyLa composites was decreased for about 43% with initial addition of T-TyLa content. The tensile modulus of the composites was increased (23%-91%) with increasing of fiber content. However, increased in fiber content reduced the elongation at break for about 53%-67% of PLA/T-TyLa composites. The optimum increment was obtained at 30 wt% of fiber content. SEM results showed that fiber dispersion was better for PLA/T-TyLa composites at lower fiber content.
      10  19
  • Publication
    Preparation of carbon nanotubes/alumina hybrid-filled phenolic composite with enhanced wear resistance
    ( 2023)
    Siti Shuhadah Md Saleh
    ;
    Mohd Firdaus Omar
    ;
    Hazizan Md Akil
    ;
    Muhammad Helmi Abdul Kudus
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Andrei Victor Sandu
    ;
    Petrica Vizureanu
    ;
    Khairul Anwar Abdul Halim
    ;
    Mohamad Syahmie Mohamad Rasidi
    ;
    Syarifah Nuraqmar Syed Mahamud
    ;
    Ion Sandu
    ;
    Norlin Nosbi
    Hybrid fillers can be produced via various methods, such as physical mixing and chemical modification. However, there is a limited number of studies on the effect of hybridisation on the mechanical performance of hybrid filler-reinforced polymer composites, especially in the context of wear performance. This study investigated the wear resistance of carbon nanotubes (CNTs)/alumina hybrid-filled phenolic composite, where two hybrid methods were used to produce the CNTs/alumina hybrid filler. The CNTs/alumina (CVD hybrid) was synthesised using the chemical vapour deposition (CVD) method, whereas the CNTs-/alumina (physically hybrid) was prepared using the ball milling method. The CNTs/alumina hybrid filler was then used as a filler in the phenolic composites. The composites were prepared using a hot mounting press and then subjected to a dry sliding wear test using a pin-on-disc (POD) tester. The results show that the composite filled with the CVD hybrid filler (HYB composite) had better wear resistance than the composite filled with physically hybrid filler (PHY composite) and pure phenolic. At 5 wt%, the HYB composite showed a 74.68% reduction in wear, while the PHY composite showed a 56.44% reduction in wear compared to pure phenolic. The HYB composite exhibited the lowest average coefficient of friction (COF) compared to the PHY composite and pure phenolic. The average COF decreased with increasing sliding speeds and applied loads. The phenolic composites’ wear and average COF are in the order HYB composite < PHY composite < pure phenolic under all sliding speeds and applied loads.
      2  8