Mohamad Kahar Ab Wahab
Thumbnail Image
Preferred name
Mohamad Kahar Ab Wahab
Official Name
Mohamad Kahar, Ab Wahab
Alternative Name
Kahar, Ab Wahab M.
Mohd Kahar, Ab Wahab
Main Affiliation
Scopus Author ID
54793162000
Researcher ID
CYR-1062-2022

Research Output

Filters

2
2
2
2
Reset filters

Settings
Now showing 1 - 2 of 2
  • Publication
    Structural and dimensional analysis of LDPE/TPS blend filled with calcium carbonate
    (IOP Publising, 2020)
    Anis Adila Ab Halim
    ;
    Mohamad Kahar Ab Wahab
    This study aims to investigates the changes in structural, thermal stability and water absorption properties of thermoplastic starch (TPS) before and after modification with citric acid and ascorbic acid. The first stage of study involved the preparation of TPS from native potato starch. Starch will be converted into thermoplastic like in the presence of glycerol as plasticizer. For the second stage, LDPE was blended with TPS to produce LDPE/TPS blend with and without modification. Then, the influence of calcium carbonate as particulate filler on the properties of LDPE/TPS blends was also investigated. Structural findings based on the FTIR analysis showed the formation of new ester bond on the TPS backbone after the modification, which correspond to the formation of crosslinking network in TPS phase. Water absorption test was used to determine the effectiveness of TPS modification in term of physical interaction between the phases.
      1  29
  • Publication
    Preparation and characterization of LDPE/TPS blend filled with calcium carbonate
    (IOP Publishing Ltd, 2020)
    Anis Adila Ab Halim
    ;
    Mohamad Kahar Ab Wahab
    The measurement of low-density polyethylene / thermoplastic starch (LDPE/TPS) composite with different loading of calcium carbonate (CaCO3) as filler was conducted under several testing such as the tensile test and scanning electron microscopy. The preparation of LDPE/TPS/CaCO3 composite was divided into three stages. The first stage involved the preparation of TPS with and without modification with carboxylic acid. The second stage, LDPE was blended with TPS to produce LDPE/TPS blend. LDPE/TPS blends with blend ratio of 100:0, 90:10, 80:20, 70:30, 60:40 and 50:50 was prepared. Each composition will undergo tensile testing to analyze their mechanical properties. The optimum LDPE/TPS blend ratio was chosen for subsequent study. Third stage involved the compounding of the chosen LDPE/TPS blend ratio with CaCO3. The result indicate that LDPE/TPS with incorporation of CaCO3 gave higher value of tensile properties as compared to LDPE/TPS blend. Based on the SEM micrograph, treated TPS with citric acid and ascorbic acid performed better interfacial phase as compared to untreated TPS, with no agglomeration and voids formation.
      4  12