Rozyanty Rahman
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Preferred name
Rozyanty Rahman
Official Name
Rozyanty, Rahman
Alternative Name
Rozyanty, A. R.
Rozyanty, R.
Rahman, Rozyanty Abdul
Rozyanty, Rahman
Rahman, Rozyanty A.
Rahman, R. A.
Rahman, R.
Main Affiliation
Scopus Author ID
35300412500
Researcher ID
GEK-5202-2022

Research Output
Now showing 1 - 3 of 3
  • Publication
    The influence of MMA esterification on interfacial adhesion and mechanical properties of hybrid kenaf bast/glass fiber reinforced unsaturated polyester composites
    ( 2021)
    Rozyanty Rahman
    ;
    Syed Zhafer Firdaus Syed Putra
    ;
    Shayfull Zamree Abd. Rahim
    ;
    Irwana Nainggolan
    ;
    Bartłomiej Jeż
    ;
    Marcin Nabiałek
    ;
    Luqman Musa
    ;
    Andrei Victor Sandu
    ;
    Petrica Vizureanu
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Dariusz Kwiatkowski
    ;
    Izabela Wnuk
    The demand for natural fiber hybrid composites for various applications has increased, which is leading to more research being conducted on natural fiber hybrid composites due to their promising mechanical properties. However, the incompatibility of natural fiber with polymer matrix limits the performance of the natural fiber hybrid composite. In this research work, the mechanical properties and fiber-to-matrix interfacial adhesion were investigated. The efficiency of methyl methacrylate (MMA)-esterification treatments on composites’ final product performance was determined. The composite was prepared using the hand lay-up method with varying kenaf bast fiber (KBF) contents of 10, 15, 20, 25, 30, 35 (weight%) and hybridized with glass fiber (GF) at 5 and 10 (weight%). Unsaturated polyester (UPE) resin and methyl ethyl ketone peroxide (MEKP) were used as binders and catalysts, respectively. Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) were used to examine the effects of MMA-esterification treatment on tensile strength and morphology (tensile fracture and characterization of MMA-esterification treatment) of the composite fabricated. The tensile strength of MMA-treated reinforced UPE and hybrid composites are higher than that of untreated composites. As for MMA treatment, 90 min of treatment showed the highest weight percent gain (WPG) and tensile strength of KBF-reinforced UPE composites. It can be concluded that the esterification of MMA on the KBF can lead to better mechanical properties and adhesion between the KFB and the UPE matrix. This research provides a clear reference for developing hybrid natural fibers, thus contributing to the current field of knowledge related to GF composites, specifically in transportation diligences due to their properties of being lightweight, superior, and involving low production cost.
  • Publication
    Potential of Rapid Tooling in rapid heat cycle molding: a review
    ( 2022)
    Nurul Hidayah Mohamad Huzaim
    ;
    Shayfull Zamree Abd. Rahim
    ;
    Luqman Musa
    ;
    Abdellah El-hadj Abdellah
    ;
    Mohd. Mustafa Al Bakri Abdullah
    ;
    Allan Rennie
    ;
    Rozyanty Rahman
    ;
    Sebastian Garus
    ;
    Katarzyna Błoch
    ;
    Andrei Victor Sandu
    ;
    Petrica Vizureanu
    ;
    Marcin Nabiałek
    Rapid tooling (RT) and additive manufacturing (AM) are currently being used in several parts of industry, particularly in the development of new products. The demand for timely deliveries of low-cost products in a variety of geometrical patterns is continuing to increase year by year. Increased demand for low-cost materials and tooling, including RT, is driving the demand for plastic and rubber products, along with engineering and product manufacturers. The development of AM and RT technologies has led to significant improvements in the technologies, especially in testing performance for newly developed products prior to the fabrication of hard tooling and low-volume production. On the other hand, the rapid heating cycle molding (RHCM) injection method can be implemented to overcome product surface defects generated by conventional injection molding (CIM), since the surface gloss of the parts is significantly improved, and surface marks such as flow marks and weld marks are eliminated. The most important RHCM technique is rapid heating and cooling of the cavity surface, which somewhat improves part quality while also maximizing production efficiencies. RT is not just about making molds quickly; it also improves molding productivity. Therefore, as RT can also be used to produce products with low-volume production, there is a good potential to explore RHCM in RT. This paper reviews the implementation of RHCM in the molding industry, which has been well established and undergone improvement on the basis of different heating technologies. Lastly, this review also introduces future research opportunities regarding the potential of RT in the RHCM technique.
  • Publication
    A review on the potential of polylactic acid based thermoplastic elastomer as filament material for fused deposition modelling
    ( 2022)
    Luqman Musa
    ;
    Nitiyah Krishna Kumar
    ;
    Shayfull Zamree Abd. Rahim
    ;
    Mohamad Syahmie Mohamad Rasidi
    ;
    Allan Edward Watson Rennie
    ;
    Rozyanty Rahman
    ;
    Armin Yousefi Kanani
    ;
    Ahmad Azrem Azmi
    Currently, a range of sectors are implementing three-dimensional (3D) printing, which is a part of additive manufacturing (AM) technology via the fused deposition modelling (FDM) approach. As of now, various filament materials are available in the market and have their limitations. Thermoplastic elastomer (TPE) blend as a filament material in 3D printing should be implemented to overcome the weakness of available filaments. TPE blend stands out due to its flexibility, thermoplastic-like processability, and renewability. Based on the findings, TPE blend filament can be made with polylactic acid (PLA) thermoplastic and elastomers such as natural rubber (NR) and epoxidized natural rubber (ENR). The TPE printed components will be flexible; tough with excellent thermal and mechanical properties. In this paper, the characteristics of TPE are being reviewed to show the potential of TPE material as filament.