Sam Sung Ting, Assoc. Prof. Ts. Dr.This page provides access to scholarly publications by UniMAP Faculty members and researchers.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/392112024-03-28T10:41:23Z2024-03-28T10:41:23ZExtraction of Spear Grass (Imperata Cylindrica) As Pro-Oxidant In Polymer BlendsNuradibah, Mohd AmerN. A., Abdul HalimKhairul Farihan, KasimSam, Sung TingHanna Ilyani, ZulhaimiMuhammad Nur Aiman, Udahttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/692022020-12-31T04:48:59Z2018-01-01T00:00:00ZExtraction of Spear Grass (Imperata Cylindrica) As Pro-Oxidant In Polymer Blends
Nuradibah, Mohd Amer; N. A., Abdul Halim; Khairul Farihan, Kasim; Sam, Sung Ting; Hanna Ilyani, Zulhaimi; Muhammad Nur Aiman, Uda
Packaging material such as plastic bags is one of the main factors that contribute to the environmental pollution due to slow degradation. The usage of metal oxide as pro-oxidant has been proven to accelerate the degradation of these materials, but the excessive usage of this pro-oxidant will be harmful to the human body. Therefore, in this research, spear grass is investigated to be used as natural based pro-oxidant that can increase the degradation rate of the polymers. In terms of that, spear grass is extracted by using pressurized hot water extraction (PHWE) to obtain the metal element such as zinc (Zn) and ferum (Fe). PHWE is using water as a solvent which is highly favourable due to non-toxicity and non-flammable characteristics that make it easy to handle. Box-Behnken design is used to optimize the temperature, extraction time, and sample-to-solvent ratio to get the maximum amount of Zn and Fe concentration from the extracted spear grass. As a conclusion, the leaf of spear grass contributed the highest amount of Zn and Fe concentration. The highest amount of Zn and Fe concentration is achieved at 150 °C, 20 minutes, and 3 g of sample to 45 ml of water.
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2018-01-01T00:00:00ZSynthesis of Alumina Sub-Microstructure Particles Using InHouse MethodsAlmahdi R., RabiaAbdul Haqi, IbrahimNik Noriman, ZulkepliSam Sung, TingTijjani, Adamhttp://dspace.unimap.edu.my:80/xmlui/handle/123456789/689952020-12-14T07:22:20Z2018-01-01T00:00:00ZSynthesis of Alumina Sub-Microstructure Particles Using InHouse Methods
Almahdi R., Rabia; Abdul Haqi, Ibrahim; Nik Noriman, Zulkepli; Sam Sung, Ting; Tijjani, Adam
The paper reported novel synthesis of alumina AlxOy Sub-Microstructure Particles Using In-House Methods. The structure was synthesized from aluminium oxide by in-house prepared method. The synthesis was performed using caustic soda (NaOH) assisted, pure aluminium was dissolved in pre-prepared solution of DI, H2O4, NaOH. AlxOy was prepared in crucible via 5 different pH solutions of DI, H2O4, NaOH. The pure aluminium powder was prepared from 2 NaAl(OH)4. The process passed through three reactions; Oxidation Al(OH)y, evaporation AlxOy, and dissolution 2NaAl(OH)z: Uniformly distributed activated was
synthesis with the average diameter of the alumina AlxOy sub-microstructures between 10.34 to 40.2µm were realised. The prepared, activated alumina was tested against three columns of 1,260 cm3, 675 cm3 and 525 cm3 with 27 samples of different content of activated. It was found, all the three columns show to total reduction of the lead from the water with increase
content of activated alumina
Link to publisher's homepage at https://iopscience.iop.org/
2018-01-01T00:00:00ZInsight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopyOmar S., DahhamRosniza, HamzahMohamad, Abu BakarNik Noriman, ZulkepliAbdulkader M., AlakrachSam, Sung TingMohd Firdaus, OmarTijjani, AdamAl-rashdi, Awad A.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/687302020-11-16T04:31:02Z2020-01-01T00:00:00ZInsight on the structural aspect of ENR-50/TiO2 hybrid in KOH/C3H8O medium revealed by NMR spectroscopy
Omar S., Dahham; Rosniza, Hamzah; Mohamad, Abu Bakar; Nik Noriman, Zulkepli; Abdulkader M., Alakrach; Sam, Sung Ting; Mohd Firdaus, Omar; Tijjani, Adam; Al-rashdi, Awad A.
The ring-opening reactions (ROR) of epoxide groups in epoxidized natural rubber/titania (ENR-50/TiO2) hybrid in potassium hydroxide/isopropanol medium were examined using NMR spectroscopy and supported by the FTIR technique. The thermal behaviour of the hybrid was also studied using TG/DTG and DSC analyses. The 1H NMR results suggested that 16.82% of ROR occurred in the hybrid, while the 13C NMR results exhibited five new peaks at δ 19.5, 71.0, 73.7, 91.7 and 94.4 ppm in the hybrid. 2D NMR, such as HMQC, HMBC and COSY techniques, further scrutinized these assignments. The FTIR spectrum exhibited Ti-O-C characteristics via the peak at 1028 cm−1. The TG/DTG results showed four steps of thermal degradation at 44–148, 219–309, 331–489 and 629–810 °C due to the existence of Ti moieties along with a polymer chain mixture (intact and ring-opened epoxide groups) of ENR-50, which in turn led to an increase in the Tg value of the hybrid to 27 °C compared to that of purified ENR-50 at −17.72 °C.
Link to publisher's homepage at https://elsevier.com/
2020-01-01T00:00:00ZThe influence of Rice Husk Fiber on The Properties of Epoxidized Natural Rubber/Rice Husk CompoundsDahham, Omar S.Nik Noriman, ZulkepliSam, Sung TingMarwa, Al-Samarrai N.Shayfull Zamree, Abd RahimAlakrach, A.MAbduati, Elnaid S. A.http://dspace.unimap.edu.my:80/xmlui/handle/123456789/686142020-11-05T00:36:41Z2016-01-01T00:00:00ZThe influence of Rice Husk Fiber on The Properties of Epoxidized Natural Rubber/Rice Husk Compounds
Dahham, Omar S.; Nik Noriman, Zulkepli; Sam, Sung Ting; Marwa, Al-Samarrai N.; Shayfull Zamree, Abd Rahim; Alakrach, A.M; Abduati, Elnaid S. A.
In this work, curing characteristics, tensile and physical properties of epoxidized natural rubber/ rice husk (ENR-50/RH)
compounds were investigated. Different RH loading (10, 20, 30, 40 and 50 Phr) and size (fine size at 100-300 μm and coarse size at 5-10 mm) were prepared and used. Results indicated that the scorch time (t2) and cure time (t90) became shorter with increasing RH content. In contrast, minimum torque (ML) and maximum torque (MH) increased with increasing RH
content in the rubber compounds. Hardness and crosslink density showed improvement with increasing RH content. Tensile strength (Ts) and elongation at break (Eb) decreased slightly as RH content increased. However, the fine size of RH recorded better overall properties compared to the RH coarse size at same loading the rubber compound.
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2016-01-01T00:00:00Z