Mohd Hafiz Zainol
Thumbnail Image
Preferred name
Mohd Hafiz Zainol
Official Name
Mohd Hafiz, Zainol
Alternative Name
Mohd, H. Z.
Zainol, Mohd
Zainol, M. H.
Main Affiliation
Scopus Author ID
57201736993
Researcher ID
CGX-4416-2022

Research Output

Filters

1
2
Reset filters

Settings
Now showing 1 - 2 of 2
  • Publication
    Self-healing magnetorheological elastomer for vibration damping
    ( 2020-01-01)
    Shuib R.K.
    ;
    Thajudin N.L.N.
    ;
    Mohd Hafiz Zainol
    In this work, magnetorheological elastomers (MRE) based on nickel zinc ferrite and natural rubber were prepared. Self-healing capability was employed to the MRE by peroxide induced graft polymerization between zinc thiolate and natural rubber to produce reversible ionic crosslinks that can recover the properties of the fracture materials. Evidence that reversible ionic crosslinks occurred was determined by tensile test of original and healed sample. The results revealed that the tensile strength of the MRE recovered 56% in a minute and almost 100% in 10 minutes at room temperature. The morphology of the fractured surface also showed the fracture area was recovered after the healing processed. The dynamic mechanical analysis of the MREs under cyclic loading were also examined with parallel plate rheometer.
      2  46
  • Publication
    Investigation on recycling and reprocessing ability of self-healing natural rubber based on ionic crosslink network
    (De Gruyter Brill, 2024)
    Mohd Hafiz Zainol
    ;
    Raa Khimi Shuib
    ;
    Ismail Ibrahim
    ;
    Fairul Sharin Abd Razak
    ;
    Noor Faezah Mohd Sani
    ;
    Trans Dai Lam
    Natural rubber (NR) is a complex material that is often discarded due to its three-dimensional structure. Recycling of rubber is difficult due to its complex structure, and only 1.7 million tonnes of waste, such as tyres and gloves, are considered recyclable. This study aims to develop self-healing rubber, which allows a product to recover without affecting structural reliability. Commercial NR was ionically crosslinked with zinc thiolate, forming an ionic crosslink network between rubber chains and zinc thiolate ions. The ionic crosslinks allow the rearrangement of rubber molecular chains under external heat, providing self-healing capabilities. The highest ionic crosslink density was found in NR with 35 phr zinc thiolate. The self-healing NR can recover 90 % of its initial properties at room temperature for 10 min and can be reprocessed and recycled three times without compromising its properties. It also shows excellent weldability, making it a promising material for repairing existing rubber products in heavy engineering applications.