Displaying all 2 publications

Abstract:
Sort:
  1. Kai Yin Chong, Chin Hua Chia, Sarani Zakaria, Thi Hao Pham, David Lucas
    Sains Malaysiana, 2018;47:2171-2178.
    Natural rubber (NR) latex gloves are widely used as a very important barrier for healthcare workers. However, they
    can still be perforated easily by sharp devices and instruments. The aim of this study was to investigate the effect of the
    addition of graphene oxide (GO) to low-ammonia NR latex on its puncture resistance, mechanical properties and thermal
    stability. GO was synthesized using modified Hummers’ reaction. The produced GO was mixed into the NR latex solution at
    various doses (0.01-1.0 wt. %), followed by a coagulant dipping process using ceramic plates to produce film samples.
    Puncture resistance was enhanced by 12% with 1.0 wt. % GO/NR. Also, the incorporation of GO improved the stress at
    300% and 500%, the modulus at 300% and 500% and the tear strength of low-ammonia NR latex films.
  2. Mohd Shaiful Sajab, Wan Nurmawaddah Wan Abdul Rahman, Chin Hua Chia, Sarani Zakaria, Hatika Kaco, An’amt Mohamed Noor
    Sains Malaysiana, 2018;47:1891-1896.
    Absorption is one of the effective, simple and economical methods to remove oil from oily wastewater. The most widely
    used approach is to utilize lignocellulosic biomass as oil absorbent. However, the hygroscopic of cellulose have limited
    the oil-water separation capability of lignocellulosic fibers. In this study, the surface functionality of oil palm empty
    fruit bunch (EFB) fibers was slightly altered by grafting reduced graphene oxide (rGO). The modified EFB fibers show
    a distinct morphological and chemical characteristics changes as the surface of fibers has been coated with rGO. This
    was supported by FTIR analysis with the diminishing peak of hydroxyl group region of EFB fibers. While the surface
    modification on EFB fibers shows a diminution of a hydrophilic characteristic of 131.6% water absorption in comparison
    with 268.9% of untreated EFB fibers. Moreover, modified fibers demonstrated an oil-water separation increment as well,
    as it shows 89% of oil uptake and improved ~17 times of oil selectivity in oil-water emulsion than untreated EFB fibers.
Related Terms
Filters
Contact Us

Please provide feedback to Administrator (afdal@afpm.org.my)

External Links