Browsing Conference Papers by Author "Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP)"

Now showing items 1-17 of 17

    • Characteristics of thermoplastic potato starch/bentonite nanocomposite film 

      Nurul Husna, Zakaria; Noorhafiza, Muhammad; Mohd Mustafa Al Bakri, Abdullah; Sandu, I. G.; Mei Wan, C. L. (IOP Publishing Ltd, 2018-06)
      The aim of this study is to investigate the effect of bentonite towards thermoplastic potato starch nanocomposite films on the mechanical, microstructure and physical properties. The nanocomposite films were prepared using ...

    • Compressive strength and thermal conductivity of metakaolin geopolymers with anisotropic insulations 

      Nur Ain, Jaya; Yun-Ming, Liew; Mohd Mustafa Al Bakri, Abdullah; Kamarudin, Hussin; Cheng Yong, Heah; Ridho, Bayuaji; Muhammad Faheem, Mohd Tahir (IOP Publishing Ltd, 2020-02)
      This research investigated the properties of thermally insulating geopolymer prepared using waste filler (fibreboard and rubber) to act as anisotropic pore/insulation. The geopolymer matrix was synthesised using metakaolin ...

    • Correlation of microstructure and flexural strength of fly ash geopolymer of varying molarities 

      Yong-Sing, Ng; Yun-Ming, Liew; Cheng-Yong, Heah; Mohd Mustafa Al Bakri, Abdullah; Hui-Teng, Ng; Amir, Naveed (IOP Publishing Ltd, 2019-08)
      The present work studies and compares the flexural properties of fly ash geopolymer with varying molarity of sodium hydroxide (NaOH). Different molarities of NaOH solution (6M, 8M, 10M, 12M and 14M) are used to prepare the ...

    • Effect of solid-to-liquid ratio on thin fly ash geopolymer 

      Yong-Sing, Ng; Yun-Ming, Liew; Mohd Mustafa Al Bakri, Abdullah; Hui-Teng, Ng; Kamarudin, Hussin; Cheng Yong, Heah; Nurul Aida, Mohd Mortar; Sandu, Andrei Victor (IOP Publishing Ltd, 2020-02)
      The present work studies the effect of solid-to-liquid (S/L) ratio on the properties of thin fly ash-based geopolymer. The fly ash geopolymers with dimension of 160 mm × 40 mm × 10 mm were synthesised by using various S/L ...

    • Effects of thermal resistance to fly ash-based lightweight geopolymer 

      Wan Mastura, Wan Ibrahim; Mohd Mustafa Al Bakri, Abdullah; Romisuhani, Ahmad; Amir, Naveed; Che Mohd Ruzaidi, Ghazali; Masdiyana, Ibrahim (IOP Publishing Ltd, 2019-08)
      Geopolymers are inorganic polymeric materials and cementations materials that replace the Ordinary Portland Cement. This study aimed to determine the effect of thermal resistance of fly ash based lightweight geopolymer and ...

    • 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 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 ...

    • 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 ...

    • 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 ...

    • Microstructural analysis of fly ash-based geopolymers with various alkali concentration 

      Hui-Teng, Ng; Cheng-Yong, Heah; Yun-Ming, Liew; Mohd Mustafa Al Bakri, Abdullah; Yong-Sing, Ng (IOP Publishing Ltd, 2019-08)
      In the present work, a comparative study on the effect of different concentration of sodium hydroxide (NaOH) on fly ash-based geopolymer was investigated. The geopolymer synthesis by mixing fly ash with alkali activator ...

    • Optimization of processing parameters for graphitization of oil palm trunk waste at lower heating temperature 

      N. A., Karim; Che Mohd Ruzaidi, Ghazali; M. M., Ramli; Sandu, A. V.; Chirila, E.; Mohd Mustafa Al Bakri, Abdullah (IOP Publishing Ltd, 2019-07)
      Previously synthetic graphite was produced at higher temperature which is around 2,500°C in complex processing method. The method bear the name of the scientist whose discover the synthetic graphite namely "Acheson Process". ...

    • Performance of geopolymer concrete when exposed to marine environment 

      Fakhryna Hannanee, Ahmad Zaidi; Romisuhani, Ahmad; Mohd Mustafa Al Bakri, Abdullah; Muhammad Faheem, Mohd Tahir; Zarina, Yahya; Wan Mastura, Wan Ibrahim; Ahmad Syauqi, Sauffi (IOP Publishing Ltd, 2019-07)
      Over the decades, concrete is widely known as the most resourceful construction material as it is suitable for many building applications. However, despite its ability to last hundreds of years in many applications, it has ...

    • Porous metakaolin geopolymers with tailored thermal conductivity 

      Nur Ain, Jaya; Liew, Yun-Ming; Mohd Mustafa Al Bakri, Abdullah; ChengYong, Heah (IOP Publishing Ltd, 2019-08)
      In this work, a novel lightweight metakaolin geopolymers were produced by using hydrogen peroxide as foaming agent. The influence of the hydrogen peroxide incorporation content (0.25 – 1.25%) on density, compressive strength ...

    • Preparation of heat treated Titanium Dioxide (TiO₂ ) nanoparticles for water purification 

      Araoyinbo, A. O.; Mohd Mustafa Al Bakri, Abdullah; Azmi, Rahmat; A. I., Azmi; Vizureanu, P.; Wan Mohd Faizal, Wan Abd Rahim (IOP Publishing Ltd, 2018-06)
      Photocatalysis using the semiconductor titanium dioxide (TiO₂) has proven to be a successful technology for waste water purification. The photocatalytic treatment is an alternative method for the removal of soluble organic ...

    • Synthesis and characterization of fly ash based geopolymer ceramics: effect of NaOH concentration 

      Romisuhani, Ahmad; Wan Mastura, Wan Ibrahim; Mohd Mustafa Al Bakri, Abdullah; Sandu, Andrei Victor; Nurul Aida, Mohd Mortar; Noratikah, Hashim; Warid Wazien, Ahmad Zailani (IOP Publishing Ltd, 2020-02)
      Ceramic materials have demonstrated impressive performance under severe conditions in a wide number of areas including health, energy and environment, transportation and electronic applications. In order to meet the growing ...

    • Synthesis of sodium silicate from rice husk ash as an activator to produce epoxy-geopolymer cement 

      L. Handayani; S. Aprilia; Abdullah; C. Rahmawati; Mohd Mustafa Al Bakri, Abdullah; Ikmal Hakem, Aziz; Emy Aizat, Azimi (IOP Publishing Ltd, 2021-03)
      Rice husk ash (RHA), a byproduct of the rice industry, is the primary source of amorphous silica for producing sodium silicate solutions to replace standard commercial sodium silicate in geopolymer mixture design. The ...