Azlin Fazlina Osman
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Preferred name
Azlin Fazlina Osman
Official Name
Azlin Fazlina, Osman
Alternative Name
Osman, Azlin Fazlina
Osman, A.
Fazlina Osman, Azlin
Main Affiliation
Scopus Author ID
54891813000
Researcher ID
K-2714-2019

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  • Publication
    Incorporation of hybrid pre-dispersed organo-montmorillonite/destabilized bentonite nanofillers for improving tensile strength of PEVA copolymer with 40% vinyl acetate composition
    (Trans Tech Publications Ltd., 2020)
    Tuty Fareyhynn Mohammed Fitri
    ;
    Azlin Fazlina Osman
    ;
    Rahimah Othman
    ;
    Zaleha Mustafa
    In this work, soft and flexible poly (ethylene-co-vinyl acetate) (PEVA) with 40% vinyl acetate (VA) composition was used as matrix material to form nanocomposites with single nanofiller (organo-montmorillonite (OMMT) or Bentonite (Bent)) and hybrid nanofillers (OMMT+Bent in the ratios of 4:1, 3:2, 2:3 and 1:4). In order to achieve greater exfoliation and dispersion of the hybrid nanofillers in the PEVA matrix, the pre- dispersing and destabilization technique was applied to the O-MMT and Bent, respectively. The procedures were done prior to the melt compounding process of the nanocomposite. A tensile test was done to evaluate the mechanical properties of the resultant nanocomposites and to allow the selection of the best OMMT/Bent ratio for the production of the hybrid nanocomposite. The structure and fractured surfaces of the neat PEVA and nanocomposite were analyzed using Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM), respectively. Results indicated that the addition of hybrid pre-dispersed OMMT/destabilized bentonite nanofillers into the PEVA matrix resulted in greater mechanical performance as compared to the single OMMT or single Bent nanofiller. The best achievement in the tensile strength and elongation at break of the PEVA hybrid nanocomposite was obtained when the hybrid nanofillers was added in the ratio of 4:1 (OMMT: Bent). The SEM analysis showed that the PEVA hybrid nanocomposite with 4OMMT: 1Bent had greater matrix deformation than the neat PEVA when subjected to tensile load. This mechanical deformation could be related to the increased flexibility of the PEVA chains which facilitated more energy absorption during the stretching of the material. Apparently, this mechanism acted as a matrix toughening process which allowed the increment of both tensile strength and elongation at break values of the PEVA upon the addition of the hybrid nanofillers.
  • Publication
    Effects of Ferric Chloride as secondary dopant on the properties of Polyethylene Oxide / Polyvinyl Chloride / Polyaniline conductive films
    (Penerbit Akademia Baru, 2025)
    Mohammed Izzuddeen Mohd Yazid
    ;
    Norliana Yusof
    ;
    Azlin Fazlina Osman
    ;
    Mohamad Nur Fuadi Pargi
    ;
    Meor Ahmad Faris Meor Ahmad Tajudin
    ;
    Irwana Nainggolan
    The potential uses of conductive films in flexible electronic devices have attracted a lot of attention to their development. The mechanical and electrical properties of polyethylene oxide (PEO) and polyvinyl chloride (PVC) have been investigated as a matrix in electrically conductive polymer composites. However, it is still difficult to increase their electrical conductivity without sacrificing their mechanical integrity. To solve these problems, the use of conductive polymers like polyaniline (PAni) has showed potential. Despite progress, nothing is known about how different PAni concentrations with the inclusion of secondary dopants such ferric chloride (FeCl₃) will affect the overall performance of the PEO/PVC conductive films. The purpose of this work is to examine how the tensile strength, electrical conductivity, and morphological structure of PEO/PVC based conductive films are affected by the addition of PAni and FeCl₃. The results offer guidance on how to best optimize the mixture for PEO/PVC blends with 2.5 wt.%-10 wt.% PAni loadings were fabricated with and without the presence of FeCl3. PAni was doped by dissolving it with 6 wt.% FeCl₃ in toluene to initiate the secondary doping. Then, the doped Pani will be utilized as conductive filler in PEO/PVC/PAni-FeCl3 conductive films. The conductive films were prepared by solution casting method using tetrahydrofuran as the solvent at ambient temperature. The electrical conductivity, tensile strength and X-ray diffraction (XRD) analysis of the conductive films was analyzed. The study found that higher loading of PAni increased the electrical conductivity of the conductive films and further improved with the addition of FeCl3. The XRD analysis study supported the findings by revealing the modified structure of PAni, with FeCl3 as the oxidizing agent. The tensile strength, however, decreased with the addition of PAni and FeCl3 in the conductive films due to poor agglomeration of filler.
  • Publication
    Thermoplastic starch hybrid biocomposite films with improved strength and flexibility produced through crosslinking via carboxylic acid
    ( 2023)
    Di Sheng Lai
    ;
    Azlin Fazlina Osman
    ;
    Sinar Arzuria Adnan
    ;
    Ismail Ibrahim
    ;
    Midhat Nabil Ahmad Salimi
    ;
    Mariatti Jaafar @ Mustapha
    Thermoplastic starch (TPS) suffers from its intrinsic low mechanical strength and high brittleness due to its strong hydrogen bonding and low chain mobility. The conventional way to crosslink the TPS film can improve the strength and stiffness of the films, but usually reduces the flexibility of the film, and increases its brittleness. In this study, the incorporation of the hybrid nanofiller [1 wt% nanocellulose (C) and 4 wt% nano bentonite (B)] into the TPS proved to improve greatly the films’ strength and flexibility. The hybrid nanofillers with ratio 4B:1C was incorporated into the crosslinked thermoplastic corn starch (CR-TPCS) film to increase the its flexibility and toughness and produced a high mechanical strength fully biodegradable film. Two different aqueous carboxylic acids: citric acid (CA) and tartaric acid (TA) with different pH values (2,4,6) as the green crosslinker were employed. Substantial increase of tensile strength (3.98 to 9.17 MPa), Young’s modulus (9.10 to 46.30 MPa) and elongation at break (55.2 to 135.7%) was observed for the CA- 4B1C/pH2 films compared to the CR-TPCS films. The melting temperature (Tm) of the CA-4B1C/pH2 improved compared to the TPCS/4B1C (un-crosslinked) film due to its crosslinking effect. Meanwhile, the CA-4B1C films exhibited the highest degree of substitution and di-esterification with the lowest swelling and water solubility properties due to the formation of a special “bridge” structure between the CA, nanocellulose and plasticizer. The “bridge” structure developed between the TPCS chains serves as the toughener to motivate higher chain stress relaxation and load endurance. The crosslinked “bridge structure” also proved to effectively reduce the retrogradation phenomenal in the TPCS films. This combination method of hybridization and crosslinking is an efficient, low cost, and environmentally friendly technique to overcome the low flexibility and brittleness problem of the TPS based packaging film.
      2  36
  • Publication
    Network Structure and Mechanical Properties of Flexible Electronic Interconnects based on Linear Low-Density Polyethylene (LLDPE) and Liquid Silicone Rubber (LSR) Conductive Polymer Composites
    ( 2024-03-01)
    Khairul Anwar Abdul Halim
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Badrul F.
    ;
    Azlin Fazlina Osman
    ;
    Mohd Firdaus Omar
    ;
    Suhaimi A.S.
    ;
    Muhammad Salihin Zakaria
    Conductive polymer composites (CPCs) with the ability to maintain high conductivity whilst remaining flexible at various operating temperatures and conditions have gained interest as potential materials for electronic interconnect applications. The ability of a polymer matrix to conduct electricity is mainly dependent on the conductive filler loadings as well as the formation of network paths within the CPCs. The main aim of this research work was to establish and understand the correlation between the network structure formation and mechanical properties of linear low-density polyethylene/copper (LLDPE/Cu) and liquid silicone rubber/copper (LSR/Cu) CPCs. Various techniques such as electron microscopy, thermal studies, four-point probe, and tensile testing were employed in this study. Furthermore, selected samples were characterized and tested using synchrotron micro-x-ray fluorescence (XRF) technique and dynamic mechanical analysis (DMA). It was found that the electrical conductivity of the CPCs increased with increasing filler loadings. Addition of Cu filler had a marginal effect on the tensile strength of both LLDPE/Cu and LSR/Cu CPCs. Nevertheless, it was found that the elongation at break for LLDPE/Cu consistently increased with the addition of Cu whereas, for LSR/Cu samples, the elongation at break decreased with the addition of Cu at various loadings. The scanning electron microscopy (SEM) micrographs obtained show that the particles of Cu were closer to one another at higher filler loadings. The data obtained revealed the potential for utilizing CPCs as flexible interconnects suitable for advanced electronic applications.
      1
  • Publication
    The Influence of Compounding Parameters on the Electrical Conductivity of LDPE/Cu Conductive Polymer Composites (CPCs)
    ( 2021-11-12)
    Farah Badrul
    ;
    Khairul Anwar Abdul Halim
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Azlin Fazlina Osman
    ;
    Nor Asiah Muhamad
    ;
    Muhammad Salihin Zakaria
    ;
    Nurul Afiqah Saad
    ;
    Syatirah Mohd Noor
    Low-linear density (LDPE) and copper (Cu) were used as main polymer matrix and conductive filler in order to produce electrically conductive polymer composites (CPC). The selection of the matrix and conductive filler were based on their due to its excellence properties, resistance to corrosion, low cost and electrically conductive. This research works is aimed to establish the effect of compounding parameter on the electrical conductivity of LDPE/Cu composites utilising the design of experiments (DOE). The CPCs was compounded using an internal mixer where all formulations were designed by statistical software. The scanning electron micrograph (SEM) revealed that the Cu conductive filler had a flake-like shape, and the electrical conductivity was found to be increased with increasing filler loading as measured using the four-point probe technique. The conductivity data obtained were then analysed by using the statistical software to establish the relationship between the compounding parameters and electrical conductivity where it was found based that the compounding parameters have had an effect on the conductivity of the CPC.
      1  27
  • Publication
    Micromechanical modeling of polyamide 11 nanocomposites properties using composite theories
    ( 2023)
    Khairul Anwar Abdul Halim
    ;
    James E. Kennedy
    ;
    Mohd Arif Anuar Mohd Salleh
    ;
    Azlin Fazlina Osman
    ;
    Mohd Firdaus Omar
    ;
    N.M. Sunar
    The use of organically modified clays as nano-reinforcement in polymer matrices is widely investigated owing to their remarkable reinforcement at low filler loading. In this body of work, the nanocomposites were prepared by melt blending nanoclay with polyamide 11 (PA 11) utilising a twin-screw extruder in order to maximise the dispersion of clay particles within the matrix during compounding. The main aim of the work was to study the reinforcing effect of nanoclay within PA 11 using two micromechanical model namely Halpin-Tsai and Mori-Tanaka composite theories. These theories were used to predict the effective tensile modulus of PA 11 nanocomposites and the results were compared to the experimental data. In addition, the Halpin-Tsai model was used to predict the storage modulus and heat distortion temperature (HDT) of PA 11 nanocomposites. It was found that the tensile modulus for nanocomposites with a high clay aspect ratio exhibits up to 10% higher when compared to the nanocomposites with lower clay aspect ratio. Thus, it is believed that the combination of clay aspect ratio and modulus contributes to the super reinforcing effect of nanoclay within the PA 11 matrix.
      1  20
  • Publication
    Interfacial Bonding Mechanisms of Natural Fibre-Matrix Composites: An Overview
    ( 2022-01-01)
    Mohammed M.
    ;
    Rasidi M.S.M.
    ;
    Mohammed A.M.
    ;
    Rozyanty Rahman
    ;
    Azlin Fazlina Osman
    ;
    Tijjani Adam
    ;
    Betar B.O.
    ;
    Dahham O.S.
    The development of natural fiber (NFr) composites for a variety of applications is on the rise. The optimization of the interfacial bonding (IFB) between the reinforcing NFr and polymer matrix is perhaps the single most critical aspect in the development of natural fibre polymer composites (NFPCs) with high mechanical performance. While the IFB is critical in determining the mechanical properties of the NFPCs, such as stress transfer, it is one of the least understood components. This article offers a summary of IFB mechanisms, different modification approaches targeted at lowering incompatibility and improving IFB, and evaluation of the impact of IFB. It has been found that 1) In general, interdiffusion, electrostatic adhesion, chemical reactions, and mechanical interlocking are accountable for the IFB; 2) the incompatibility of the fibre and matrix, which results in poor dispersion of the fiber, weak IFB, and ultimately worse composite quality, may be addressed through strategic modifications; and 3) Interfacial interactions between polymers and nanoparticles (NPs) are significantly improving their performance in areas like thermal, mechanical, robust IFB, and moisture absorption. As a result, this review study could be an important resource for scholars interested in coating and treating NFr to further enhance their surface characteristics.
      3  28
  • Publication
    The use of ground & ultrasonicated dolomite (GUD) for improving the tensile performance of Poly (ethylene-co-vinyl acetate) copolymer composite
    ( 2021-11-12)
    Fauzi A.A.A.
    ;
    Azlin Fazlina Osman
    ;
    Khairul Anwar Abdul Halim
    ;
    Mustafa Z.
    ;
    Alakrach A.M.
    ;
    Mohd Nazry Salleh
    The combination of the organic and inorganic materials to fabricate a new form of material called 'composite' has been performed since several decades ago. However, the strategy to improve the homogeneity of the resultant composite system is still being the main focus of current research. In this study, dolomite and poly (ethylene-co-vinyl acetate) (PEVAc) were employed as filler and matrix, respectively. Dolomite was ground and ultrasonicated before being used as filler. It can be observed that the size of dolomite particles has been reduced significantly upon the grinding and ultrasonication processes. The effect of ground and ultrasonicated dolomite (GUD) addition on the mechanical performance of the PEVAc copolymer was investigated. Results indicate that the GUD filler has successfully increased the tensile strength, elongation at break, modulus of elasticity and tensile toughness of the PEVAc copolymer when being employed in 1 wt%. However, the use of higher content of GUD resulted in the decreasing trend of those properties. This shows that the ground and ultrasonicated dolomite with smaller and higher surface area particles than its pristine form could bring improvement to the mechanical performance of the copolymer when being used in low loading as it can be more easily dispersed in the copolymer matrix.
      40  1
  • Publication
    Physical, mechanical and thermal properties of hybrid epoxy multi-walled carbon nanotubes silicon carbide conductive nanocomposites
    ( 2024-12)
    Nurul Hani Noor Asmadi
    ;
    Siti Salmi Samsudin
    ;
    Mohd Shukry Abdul Majid
    ;
    Mohd Ridzuan Mohd Jamir
    ;
    Azlin Fazlina Osman
    This study investigates the efficacy of an epoxy composite system that incorporates hybrid nanofillers consisting of multi-walled carbon nanotubes (MWCNTs), and silicon carbide nanoparticles (SiCs), as a means of reinforcing epoxy matrices with enhanced thermal properties. The fabrication of epoxy hybrid nanocomposites was carried out through a solution mixing process involving ultrasonication and planetary centrifugal mixing. Before proceed with the analysing synergistic effect of hybrid filler ratios, the samples were first being investigated on the effect of filler loadings to determine the optimal fillers loading, and it was discussed in other study. It was found that there was a correlation between the thermal properties of the specimens and their respective filler loadings, which an increase in filler loadings led to an increase in thermal properties. The incorporation of 4 vol.% of MWCNTs resulted in a significant enhancement of the thermal conductivity of the composites, reaching a value of 0.46 W/mK. This represents a doubling of the thermal conductivity compared to that of pure epoxy (~0.2 W/mK). Moreover, the hybrid fillers loadings of 3vol.% MWCNT+1vol.% SiC shows a higher thermal conductivity value of 0.48 W/mK which indicates the synergistic effects of hybrid fillers. The epoxy matrix exhibited uniform dispersion of MWCNTs and SiCs, resulting in the establishment of thermally conductive pathways.
      18  1
  • Publication
    Effect of zinc oxide surface treatment concentration and nanofiller loading on the flexural properties of unsaturated polyester/kenaf nanocomposites
    ( 2023-09-01)
    Mohammed M.
    ;
    Oleiwi J.K.
    ;
    Jawad A.J.a.M.
    ;
    Mohammed A.M.
    ;
    Azlin Fazlina Osman
    ;
    Rozyanty Rahman
    ;
    Tijjani Adam
    ;
    Betar B.O.
    ;
    Subash Chandra Bose Gopinath
    ;
    Dahham O.S.
    Due to environmental concerns and budgetary constraints associated with synthetic fibers, natural fibers (NFr) are becoming increasingly popular as reinforcement in polymer composites (PCs) for structural components and construction materials. The surface treatment (ST) method is a well-established technique for enhancing the strength of interfacial bonding between NFr and the polymer matrix (PM). As a result, this research aims to determine the effect of ST with zinc oxide nanoparticles (ZnONPs) on the flexural properties of unsaturated polyester (UPE)/kenaf fiber (KF) nanocomposites. The hand lay-up technique was employed to produce KF-reinforced unsaturated polyester composites (KF/UPE) for this investigation. UPE/KF-ZnONPs composites were made with varying NFr loadings (weight percent), ranging from 10 to 40%. KF was treated with five distinct amounts of ZnONPs (from 1 to 5% weight percent). According to the findings of the investigation, the composite samples incorporating ZnONPs displayed superior optimum flexural properties compared to the untreated KF composite. It was found that 2% ZnONPs was optimal, and ST with ZnONPs could produce robust KF with improved flexural properties.
      1  29