Browsing Mohd Mustafa Al Bakri Abdullah, Prof. Dr. by Author "Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP)"
Now showing items 21-40 of 63
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The effect of thermal annealing on the microstructure and mechanical properties of Sn-0.7Cu-xZn solder joint
Mohd Izrul Izwan, Ramli; Mohd Arif Anuar, Mohd Salleh; Rita, Mohd Said; Mohd Mustafa Al Bakri, Abdullah; Dewi Suriyani, Che Halin; Norainiza, Saud; Nabiałek, Marcin (MDPI AG, 2021-02)The microstructural properties of a Pb-free solder joint significantly affect its mechanical behaviours. This paper details a systematic study of the effect of the annealing process on the microstructure and shear strength ... -
The effects of various concentrations of NaOH on the inter-particle gelation of a fly ash geopolymer aggregate
Alida, Abdullah; Kamarudin, Hussin; Mohd Mustafa Al Bakri, Abdullah; Zarina, Yahya; Sochacki, Wojciech; Rafiza, Abd Razak; Błoch, Katarzyna; Hamzah, Fansuri (MDPI AG, 2021-02)Aggregates can be categorized into natural and artificial aggregates. Preserving natural resources is crucial to ensuring the constant supply of natural aggregates. In order to preserve these natural resources, the production ... -
Evaluation of the effect of silica fume on amorphous fly ash geopolymers exposed to elevated temperature
Li, Ong Huey; Yun-Ming, Liew; Cheng-Yong, Heah; Ridho, Bayuaji; Mohd Mustafa Al Bakri, Abdullah; Loong, Foo Kai; Jin, Tan Soo; Teng, Ng Hui; Nabiałek, Marcin; Jeż, Bartłomiej; Yong Sing, Ng (MDPI AG, 2021-01)The properties of amorphous geopolymer with silica fume addition after heat treatment was rarely reported in the geopolymer field. Geopolymer was prepared by mixing fly ash and alkali activator. The silica fume was added ... -
Extraction of nitrogen, phosphorus and potassium from food waste under elevated temperature by heat induced bath method
Mohamad Anuar, Kamaruddin; N. F., Ahmad; Sandu, I. G.; Alrozi, R.; Sandu, I.; Mohd Mustafa Al Bakri, Abdullah (IOP Publishing Ltd, 2019-07)38,000 tonnes of waste is generated per day in Malaysia and 15,000 tonnes of that are food wastes. This waste should be recovered to produce a new valuable product that brings benefits such as fertiliser because it contains ... -
Friction and braking application of unhazardous palm slag brake pad composite
Norizzahthul Ainaa, Abdul Khoni; Che Mohd Ruzaidi, Ghazali; Mohd Mustafa Al Bakri, Abdullah (IOP Publishing Ltd, 2018-03)This paper reveals new alternative friction materials for brake pads. Palm slag was studied as new friction materials in brake pads but its much harder made it difficult to be applied. As a way to reduce the hardness, tire ... -
Geopolymers and their uses: review
Nergis, Dumitru Doru Burduhos; Mohd Mustafa Al Bakri, Abdullah; Vizureanu, P.; Muhammad Faheem, Mohd Tahir (IOP Publishing Ltd, 2018-06)Outlining the past-present history of the study of alumino-silicate materials, it is well known that geopolymers are inorganic polymers obtained from chemical reaction, also known as geopolymerisation, between an alkaline ... -
Graphene geopolymer hybrid: a review on mechanical properties and piezoelectric effect
Nuaim Siddiqi, Danial; Dewi Suriyani, Che Halin; Muhammad Mahyiddin, Ramli; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Siti S., Mat Isa; L. F., A. Talip; N. S., Mazlan (IOP Publishing Ltd, 2019-08)A review on graphene geopolymers hybrid is presented, focusing on the mechanical properties and piezoelectric effect. The method and way of mixing graphene with geopolymers are discussed, including form of graphene that ... -
Hybrid mold: comparative study of rapid and hard tooling for injection molding application using Metal Epoxy Composite (MEC)
Radhwan, Hussin; Safian, Sharif; Nabiałek, Marcin; Shayfull Zamree, Abd Rahim; Mohd Tanwyn, Mohd Khushairi; Mohd Azlan, Suhaimi; Mohd Mustafa Al Bakri, Abdullah; Mohd Hazwan, Mohd Hanid; Wysłocki, Jerzy J.; Bloch, Katarzyna (MDPI AG, 2021-02)The mold-making industry is currently facing several challenges, including new competitors in the market as well as the increasing demand for a low volume of precision moldings. The purpose of this research is to appraise ... -
In Vitro bioactivity study of thermoplastic Starch/Bentonite/Hydroxyapatite composites for biomedical applications
Nurul Husna, Zakaria; Noorhafiza, Muhammad; Mohd Mustafa Al Bakri, Abdullah; S. N. F., M. Noor (IOP Publishing Ltd, 2020-02)Potato starch composites film incorporating hybrid bentonite and hydroxyapatite (HA) were investigated as novel biomaterial for potential biomedical applications. The selected potato starch/bentonite composites were prepared ... -
Influence of kaolin geopolymer ceramic additions to the wettability and electrical properties of Sn-3.0Ag-0.5Cu (SAC305) lead free solder
Nur Syahirah, Mohamad Zaim; Mohd Arif Anuar, Mohd Salleh; Mohd Mustafa Al Bakri, Abdullah; Marliza, Mostapha; Romisuhani, Ahmad (IOP Publishing Ltd, 2019-12)The effect of kaolin geopolymer ceramic addition to the wettability and electrical resistivity of Sn-3.0Ag-0.5Cu (SAC305) lead free solder was successfully explored. Powder metallurgy with microwave sintering method was ... -
Influence of kaolin in fly ash based geopolymer concrete: destructive and non-destructive testing
Zarina, Yahya; Mohd Mustafa Al Bakri, Abdullah; N. Mohd Ramli; Burduhos-Nergis, D. D.; Rafiza, Abd Razak (IOP Publishing Ltd, 2018-06)Development of geopolymer concrete is mainly to reduce the production of ordinary Portland cement (OPC) that adverse the natural effect. Fly ash is a by-product collected from electrical generating power plant which resulted ... -
The influence of pre-heated treatment to improve adhesion bond coating strength of fly ash based geopolymer ceramic
Liyana, Jamaludin; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin; Aeslina, Abdul Kadir (IOP Publishing Ltd, 2018-06)The study focus on effect of pre-heated ceramic surface on the adhesion bond strength between geopolymer coating coating and ceramic substrates. Ceramic substrates was pre-heated at different temperature (400 °C, 600 °C, ... -
Influence of solid-to-liquid ratio on properties of fly ash geopolymer ceramics
Romisuhani, Ahmad; Mohd Mustafa Al Bakri, Abdullah; Wan Mastura, Wan Ibrahim; Sandu, Andrei Victor; Warid Wazien, Ahmad Zailani; Sharun Nizam, Shahrun Nahar (IOP Publishing Ltd, 2019-08)Ceramics has come to be progressively very important in industry because of their exceptional mechanical and physical properties The motivation to develop fly ash geopolymer ceramics was to overcome the problem associated ... -
Investigation of heat released during geopolymerization with fly ash based geopolymer
Rosnita, Mohamed; Rafiza, Abd Razak; Mohd Mustafa Al Bakri, Abdullah; Raa Khimi, Shuib; Nurul Aida, Mohd Mortar; Warid Wazien, Ahmad Zailani (IOP Publishing Ltd, 2019-08)Geopolymerization consists of several chemical reactions that has been reported widely as an exothermic reaction. Previous studies on heat released during geopolymerization used metakaolin and fly ash of F class as a ... -
Investigation on properties and leachability of sewage sludge from wastewater treatment plant incorporated in fired clay brick
N. S., Abdul Salim; Aeslina, Abdul Kadir; M. A., Kamarudin; M. H. Fadzli, Zaidi; Mohd Mustafa Al Bakri, Abdullah (IOP Publishing Ltd, 2018-06)Sewage sludge is produced from wastewater treatment plant that often dumped into landfill sites, lagoons or together with municipal waste. Apart from this, the disposal of this sewage sludge becoming a problem for environment. ... -
Magnetic properties of rapid cooled FeCoB based alloys produced by injection molding
Nabiałek, M.; Jeż, B.; Jeż, K.; Pietrusiewicz, P.; Gruszka, K.; Bloch, K.; Gondro, J.; Rzącki, J.; Mohd Mustafa Al Bakri, Abdullah; Sandu, A. V.; Szota, M. (IOP Publishing Ltd, 2018-06)The paper presents the results of investigations of the structure and magnetic properties of massive rapid cooled Fe₅₀₋ₓCo₂₀₊ₓB₂₀Cu₁Nb₉ alloys (where x = 0, 5). Massive alloys were made using the method of injecting a ... -
Mechanical and physical properties of bottom ash/fly ash geopolymer for pavement brick application
Wan Mastura, Wan Ibrahim; Mohd Mustafa Al Bakri, Abdullah; Muhammad Faheem, Mohd Tahir; Nurul Aida, Mohd Mortar; Muhammad Amirul Aziem, Noor Azli (IOP Publishing Ltd, 2020-02)Geopolymers are amorphous to semi-crystalline with excellent physical and and mechanical properties. It has been used to become a potential binder to Ordinary Portland Cement (OPC) in certain applications due to its lower ... -
Mechanical properties and thermal conductivity of lightweight foamed geopolymer concretes
Siti Fatimah Azzahran, Abdullah; Yun-Ming, Liew; Mohd Mustafa Al Bakri, Abdullah; Cheng-Yong, Heah; Khairunnisa, Zulkifly (IOP Publishing Ltd, 2019-08)Foamed geopolymer concretes have a better performance in the thermal insulation properties compared to normal geopolymer concretes. In this research, lightweight aggregate geopolymer concretes was incorporated with different ... -
Mechanical properties of Graphene-rubber nanocomposites
Nur Asyikin, Mohd Anhar; Muhammad Mahyiddin, Ramli; Nor Azura Malini, Ahmad Hambali; A. A., Aziz; Siti S., Mat Isa; N. S. Danial; Mohd Mustafa Al Bakri, Abdullah (IOP Publishing Ltd, 2017-11)This research focused on development of wearable sensor device by using Prevulcanized Natural Rubber (PV) and Epoxidized Natural Rubber (ENR 50) latex incorporated with graphene oxide (GO), graphene paste, graphene powder ... -
Mesoporous structure of doped and undoped PEG on Ag/TiO₂ thin film
Kamrosni, Abdul Razak; Dewi Suriyani, Che Halin; Azliza, Azani; Mohd Mustafa Al Bakri, Abdullah; Mohd Arif Anuar, Mohd Salleh; Norsuria, Mahmed; Muhammad Mahyiddin, Ramli; Suhaila, Sepeai (IOP Publishing Ltd, 2019-08)In this reaserch, photocatalyst silver titanium dioxide was doped and modified by Polyethylene Glycol (PEG). The purpose of the present study was to analyse the synthesized Ag/TiO₂ thin film doped and undoped PEG. Ag/TiO₂ ...