Browsing by Author "Mohd Firdaus, Omar"
Now showing items 1-16 of 16
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Effect of aluminium powder on kaolin-based geopolymer characteristic and removal of Cu²⁺
Nurliyana, Ariffin; Mohd Mustafa Al Bakri, Abdullah; Postawa, Przemysław; Shayfull Zamree, Abd Rahim; Mohd Remy Rozainy, Mohd Arif Zainol; Ramadhansyah, Putra Jaya; Sliwa, Agata; Mohd Firdaus, Omar (MDPI AG, 2021-02)This current work focuses on the synthesis of geopolymer-based adsorbent which uses kaolin as a source material, mixed with alkali solution consisting of 10 M NaOH and Na₂SiO₃ as well as aluminium powder as a foaming agent. ... -
Effect of Glass Reinforced Epoxy (GRE) pipe filled with Geopolymer Materials for Piping Application: Compression Properties
Mohammad Firdaus, Abu Hashim; Mohd Mustafa, Al Bakri Abdullah; Che Mohd Ruzaidi, Ghazali; Kamarudin, Hussin; Mohammed, Binhussain; Mohd Firdaus, Omar (EDP Sciences, 2016)The aim of this paper is to achieve the highest compressive strength of glass reinforced epoxy pipe with the geopolymer filler content of weight percentage that were used in glass reinforced epoxy pipe. The samples were ... -
The effect of loading rates and particle geometry on compressive properties of polypropylene/zinc oxide nanocomposites: Experimental and numerical prediction
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad; Shahrom, Mahmud, Dr. (Society of Plastics Engineers, 2012-01)Compressive properties, of particulate filled polymer matrix composites, are affected (to a certain extent) by the geometry of the particles, as well as the loadingrates. Therefore, this article presents the results on the ... -
Effect of molecular structures on dynamic compression properties of polyethylene
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier B.V., 2012-03)The properties of polymers are strongly affected by their molecular structures. Therefore, three different types of polyethylene; low density, low-linear density and high density polyethylene were used in this study to ... -
Effect of particle size on mechanical properties of Sawdust-High density Polyethylene composites under various strain rates
Haliza, Jaya; Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad; Nik Noriman, Zulkepli (North Carolina State University, 2016)There is a need to understand the effect of wood particle size, as it affects the characteristics of wood-based composites. This study considers the effect of wood particle size relative to the dynamic behavior of wood ... -
Effect of particle sizes on rate sensitivity and dynamic mechanical properties of polypropylene/silica (PP/Sio2) nanocomposites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Trans Tech Publications, 2012)Filler-related characteristic such as particle size, shape and geometry are essential factors that need to be considered during the evaluation of the material's performance especially in the area of particle filled composites. ... -
Insight 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. (Elsevier, 2020)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. ... -
Measurement and prediction of compressive properties of polymers at high strain rate loading
Mohd Firdaus, Omar; Hazizan, Md Akil, Assoc. Prof. Dr.; Zainal Ariffin, Ahmad, Prof. Hj. (Elsevier Ltd., 2011-09)Strain-rate effect is widely recognized as a crucial factor that influences the mechanical properties of material. Despite the acknowledge importance, the understanding of how such factor interact with the sensitivity of ... -
Measurement on dynamic compressive properties and rate sensitivity of polypropylene/zinc oxide nanocomposites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Universiti Malaysia Perlis (UniMAP), 2012-06-18)Rate sensitivity is one of the statistical evaluator that determines the performance of material especially at high strain rate loading. Despite its acknowledge importance, there is very limited number of works were reported ... -
Measurement on strain rate sensitivity and dynamic mechanical properties of various polymeric materials
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Ariffin, Ahmad (Trans Tech Publications, 2011)Strain rate sensitivity and dynamic mechanical properties of polymeric materials are affected to a certain extent especially by the rate of loading. However, there is limited number of works reported on that particular ... -
Mechanical properties of nanosilica/polypropylene composites under dynamic compression loading
Mohd Firdaus, Omar; Hazizan, Md Akil, Assoc. Prof. Dr.; Zainal Arifin, Ahmad, Prof. (Society of Plastics Engineers, 2011-04)This article presents results on the dynamic mechanical properties of PP-SiO2 nanocomposites, with nanosilica contents of 1, 3, and 5% by weight, at various strain rates using a Split Hopkinson Pressure Bar (SHPB) apparatus. ... -
Particle size – dependent on the static and dynamic compression properties of polypropylene/silica composites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier, 2013-03)The effect of particle size is widely known as an essential factor that influences the mechanical properties of particulate filled polymer composites. However, there is a limited number of works available, on the particular ... -
Polimer Terbiodegrasi
Sam Sung, Ting; Nik Noriman, Zulkepli; Mohd Firdaus, Omar (Penerbit UniMAP, 2014)Polimer Terbiodegradasi ialah sebuah buku yang memerihalkan penghasilan polimer terbiodegradasi dan aplikasi-aplikasi daripada bahan polimer terbiodegradasi. Penghasilan buku ini adalah untuk member cadangan menegnai ... -
Static and dynamic compressive properties of mica/polypropylene composites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad (Elsevier B. V., 2011-01-25)The static and dynamic properties of mica/polypropylene composites, with a mica content of 10, 15, 20% by weight, were studied at different levels of strain rates (from 10s-4 to 10s2), using a conventional Universal Testing ... -
Static and dynamic compressive properties of polypropylene/zinc oxide nanocomposites
Mohd Firdaus, Omar; Hazizan, Md Akil; Zainal Arifin, Ahmad, Prof.; Shahrom, Mahmud (Wiley Periodicals, Inc., 2014-04)The effect of strain rate is widely recognized as an essential factor that influences the mechanical properties of polymer matrix composites. Despite its importance, no previous work has been reported on the high-strain ... -
The tensile properties and morphology analysis of recycled mattress filled natural rubber compounds
Nik Noriman, Zulkepli, Dr.; Mohd Firdaus, Omar; Sam, Sung Ting, Dr.; N. P., Shamni; Lokman Hakim, Ibrahim; Mohd Mustafa Al Bakri, Abdullah (AENSI Publisher All rights reserved, 2013-10)The tensile properties and morphology analysis of Recycled Mattress (rMat) filled Standard Malaysian Rubber (SMR L) and Epoxidized Natural Rubber (ENR 50) was successfully studied. The both compounds were prepared by two ...