Anis Sofia Sufian
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Preferred name
Anis Sofia Sufian
Official Name
Anis Sofia, Sufian
Alternative Name
Sufian, Anis Sofia
Sofia, Anis
Sofia, A.
Anis Sofia, S
Main Affiliation
Scopus Author ID
57219215617
Researcher ID
AAC-1313-2021

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Publication

Fresh state and mechanical properties of SCC-POFA-CF mixture

2020 , M.A. Iman , N. Mohamad , Fasya Raain , Anis Sofia Sufian , Azree Mydin , A.A.A. Samad

This paper presents the fresh state and mechanical properties of self-compacting concrete (SCC) with addition of coir fiber (CF) as filler in range of 0.2% to 0.6% and replacing the cement in 10% with palm oil fuel ash (POFA). The workability test such as slump flow and J-ring test were used on the fresh SCC-POFA-CF mixture. The mechanical properties of SCC- POFA-CF in form of compressive, tensile and flexural strength were determine using the compressive test on cube, split tensile test on cylinder and four-point bending test on prism respectively. The increasing amount of CF in mixture resulting the decreasing of workability of SCC-POFA-CF. The SCC mixture with 0.2% CF was selected as optimum as the strength reached the allowable limit of strength. The less crack was occurred on SCC-POFA-CF compared to the control specimen. Therefore, the propagation of crack in prism of SCC was control by coir fiber.

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Mechanical properties of recycled polypropylene filled with aluminium hydroxide

2020 , Yong Guan Goh , Anis Sofia Sufian , Noridah Mohamad , Nur Afiqah

The present work aims to study the prospects of the efficient utilization of aluminium hydroxide (Al(OH)3) as a filler for thermoplastic recycled polymer. Recycled polypropylene (rPP) has been used as polymer matrix to prepare composites with different levels (25 and 50 wt.%) of aluminium hydroxide filler. Maleic anhydride-grafted polypropylene (MAPP) coupling agent has also been incorporated into rPP composites to facilitate particle dispersion. MAPP treated composites have shown up to 20% improvement in tensile strength and an increment of up to 33% in tensile modulus as compared to neat rPP prepared at 25 wt.% and 50 wt.% Al(OH)3 filler content, respectively. MAPP surface treatment enhancement of interfacial adhesion between rPP matrix and Al(OH)3 filler is evident through SEM micrographs. Al(OH)3 filler strongly influences the flammability of rPP composites, with a significant reduction in average ignition time. The flame retardancy of MAPP treated rPP composite surpasses untreated rPP composite, despite the insignificant amount of difference between the two.

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Properties and flexural behavior of self-compacting concrete with added coir fiber and POFA

2020 , Afif Iman , N Mohamad , Fasya Raain , Anis Sofia Sufian , Azree Mydin , A A A Samad

This paper presents the mechanical properties and flexural behavior of self-compacting concrete (SCC) with addition of 0.2%, 0.4% and 0.6% coir fiber (CF) as filler, and 10% palm oil fuel ash (POFA) as partial cement replacement. Fresh SCC-POFA-CF mixture was tested under slump flow and J-ring tests to determine its workability. SCC-POFA-CF cubes and cylinders were tested under compressive and tensile tests to determine its compressive strength, tensile strength, and flexural strength, while prisms were tested under four point bending load to determine its flexural behavior. It is found that workability of SCC-POFA-CF decreased when CF increased. The optimum percentage of CF in SCC mixture was found to be 0.4%. SCC-POFA-CF experienced less crack compared to the control specimen. This shows that CF in SCC prisms managed to control the crack propagation.

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Publication

Alumina recovery from industrial waste: study on the thermal, tensile and wear properties of Polypropylene/Alumina nanocomposites

2019-07 , Anis Sofia Sufian , Noorasikin Samat , Meor Yusoff Meor Sulaiman , Wilfred Paulus

The investigation on the influences of alumina (Al₂O₃) particles in nano-sized retrieved from Aluminium (Al) dross was conducted on the tensile, thermal and wear properties of polypropylene (PP) composites. The thermal decomposition method was used to synthesise the micro α-Al₂O₃ particles from Al-dross, was followed by the wet-milling method to produce the nano α-Al₂O₃. The PP composites (nano and micro α-Al₂O₃ particles) were prepared via melt compounding followed by compression molding. The coupling agent was also added to facilitate the particle dispersion. The tensile tests showed the maximum tensile strength and Young’s modulus of both composites to be corresponding to the samples containing 5 wt% of α-Al₂O₃. The superiority of nano α-Al₂O₃ on improving the property of PP had also been evident in the abrasive wear performance. A small amount of α-Al₂O₃ had been adequate in enhancing the thermal stability of PP than that of neat PP. The study on tensile and worn surface with SEM had revealed better adhesion and interaction between the filler and matrix in composites that were treated with coupling agent. The recovery of nano α-Al₂O₃ particles from Al-dross potentially decreases the quantity of harmful solid waste and can be an effective alternative filler for thermoplastics.

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