Article Per Year (5 Year)
p-Index From 2021 - 2026
1.066
P-Index
This Author published in this journals
All Journal Journal of Material Science and Radiation
Norfazlinayati Othman
Universiti Putra Malaysia
Materials Science & Nanotechnology Physics

Published : 6 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 6 Documents
Search

 1 
Effect of Functional Carbon Nanotube Fillers on the Physical and Thermal Characterization of Radiation Curable Coating Khairul Aiman Khairi; Mohd Hamzah Harun; Norfazlinayati Othman; Mahathir Mohamed; Mohd Sofian Alias; Mohd Faizal Abd Rahman; Khairil Nor Kamal Umar; Rida Tajau; Nor Batrisya Ismail; Izzuddin Mohamad Zaharuddin; Siti Nur Eyisha Wafa Mohd Aminuddin
Journal of Material Science and Radiation Vol. 1 No. 2 (2025)
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v1i2.373

Abstract

This work investigates the formulation of a radiation-curable coating that integrates functionalized carbon nanotubes (f-CNT) to improve surface characteristics. Trimethylolpropane triacrylate (TMPTA) was employed as the monomer, with epoxy acrylate and urethane acrylate as oligomers and Irgacure-500 as the photoinitiator. To cure the coatings, the formulations were subjected to ultraviolet (UV) light, and the surface properties were investigated using Fourier-transform infrared spectroscopy (FTIR), pendulum hardness testing, and thermogravimetric analysis (TGA). The results show that altering the ratios of f-CNT in the formulations have a considerable impact on the mechanical and thermal characteristics of the coating. The findings show that ideal compositions of these additives improve the hardness, crosslinking density, and thermal stability of the cured films, offering insight into their potential
Chemical, Structural and Thermal Analysis of PET Flakes induced by Electron Beam Irradiation Nor Batrisya Ismail; Mohd Hamzah Harun; Izzuddin Mohamad Zaharuddin; Norfazlinayati Othman; Mahathir Mohamed; Mohd Sofian Alias; Mohd Faizal Abd Rahman; Khairil Nor Kamal Umar; Nurul Huda Mudri; Khairul Azhar Abdul Halim; Rida Tajau; Rusdyana Natasa Ghazali; Siti Nur Eyisha Wafa Mohd Aminuddin
Journal of Material Science and Radiation Vol. 1 No. 2 (2025)
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v1i2.393

Abstract

This study presents a comprehensive chemical, structural, and thermal characterization of polyethylene terephthalate (PET) flakes subjected to electron beam irradiation at doses of 0, 40, and 120 kGy. Post-consumer PET bottle flakes were analyzed using Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), and Thermogravimetric Analysis (TGA) to determine irradiation-induced modifications. FTIR results reveal noticeable variations in key functional groups, particularly in the ester (C=O and C–O) and aromatic regions, indicating chain scission, partial cross-linking, and oxidation with increasing radiation doses. XRD analysis shows a progressive reduction in peak intensity and an increase in peak broadening, signifying decreased crystallinity and enhanced amorphous character due to structural disorder. TGA measurements demonstrate improved thermal stability of irradiated PET, with major degradation shifting from ~450 °C in the non-irradiated sample to ~480 °C after irradiation, and a clearer two-stage degradation pattern associated with structural rearrangements. These findings confirm that electron beam irradiation induces significant yet controlled modifications on PET’s molecular structure, crystallinity, and thermal behavior. Such property alterations highlight the potential of electron beam treatment as an effective pre-processing approach to enhance the recyclability and performance of waste PET, contributing to more sustainable plastic waste management strategies
Effect of Gamma Irradiation on the Optical Characteristics of PVA-PANI Composite Polymer Films Norfazlinayati Othman; Mohd Hamzah Harun; Mahathir Mohamed; Mohd Sofian Alias; Zainal Abidin Talib
Journal of Material Science and Radiation Vol. 1 No. 3 (2025)
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v1i3.394

Abstract

This manuscript reports the optical and structural characteristics of PVA/PANI composite polymer films synthesized through gamma-irradiation-induced in-situ polymerization. The in-situ formation of the conductive emeraldine salt phase of polyaniline (PANI) within the polyvinyl alcohol (PVA) binder matrix was achieved under different irradiation doses. The formation of the conductive PANI phase and the presence of Cl⁻ counter-ions were confirmed through FESEM morphological analysis and EDAX elemental mapping, respectively. XRD spectra further verify the semi-crystalline nature of the composite and indicate the structural role of PVA as a binder in stabilizing the polymeric composite system. Thermal behavior analysis using TGA reveals four distinct decomposition phases, with the most pronounced thermal transition observed in the composite irradiated at 50 kGy, suggesting enhanced structural interactions between PVA and PANI at this irradiation dose. Overall, the results demonstrate that gamma irradiation is an effective route for modifying the optical, structural, and thermal properties of PVA/PANI composites, making them promising candidates for optoelectronic and conductive polymer applications
Gamma Irradiation Induced Surface Functionalization of Carbon Nanotubes Synthesized from Polyethylene Terephthalate (PET) Waste Nor Adnin Ezani Mohd Ezani; Mohd Hamzah Harun; Izzuddin Mohd Zaharuddin; Norfazlinayati Othman; Mahathir Mohamed; Mohd Sofian Alias; Mohd Faizal Abd Rahman; Khairil Nor Kamal Umar; Nurul Huda Mudri; Farah Fadzehah Hilmi; Khairul Azhar Abdul Halim; Rida Tajau
Journal of Material Science and Radiation Vol. 2 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v2i2.722

Abstract

Carbon nanotubes were synthesized by using chemical vapor deposition using polyethylene terephthalate (PET) waste. The CNTs that were produced were functionalized with organic acid namely benzoic acids from 0 up to 70 kGy using gamma irradiation. To determine the acid groups, acid base titration was utilized whereas transmission electron microscope was used to determine the morphology of the functionalized CNT and dispersion characteristic was carried out for pristine and functionalized CNTs. The results obtained show that gamma irradiation significantly induce acid functionalized CNT as compared to unirradiated acid functionalized CNT. This indicates the importance of radiation technique in functionalizing carbon nanomaterials which is feasible, green, clean and process-effective.
Tuning Hydrophobicity of Fluorinated Sol–Gel Coatings via Graphene Oxide Loading for Sustainable Surface Applications Norfazlinayati Othman; Mohd Hamzah Harun; Izzuddin Mohamad Zaharuddin; Nor Adnin Ezani Mohd Ezani; Mahathir Mohamed; Mohd Sofian Alias
Journal of Material Science and Radiation Vol. 2 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v2i2.723

Abstract

Thin fluorinated silica-based sol–gel films incorporating graphene oxide (GO) (0 – 1.0 wt.%) were synthesized to investigate their surface wettability and optical properties. The films were prepared via a sol–gel route and characterized using contact angle measurements, UV–Vis spectroscopy, and atomic force microscopy (AFM). Although GO is intrinsically hydrophilic, the water contacts angle (WCA) increased from 109◦ to 125◦, with the highest WCA at 1.0 wt.% GO. This enhancement is attributed to the formation of hierarchical surface roughness, as confirmed by AFM, which dominates over the intrinsic hydrophilicity of GO in accordance with Wenzel/Cassie–Baxter wetting behavior. UV–Vis analysis showed that the films retained high optical transparency, with transmittance of above 90% at 400 – 800 nm, although a slight decrease was observed with increasing GO loading due to light scattering effects. These findings demonstrate that controlled incorporation of GO can enhance surface functionality without significantly compromising transparency, highlighting the potential of fluorinated sol–gel coatings for advanced protective and self-cleaning applications
Eco-Friendly Radiation Curable Acrylate Coatings Reinforced with Functionalized Carbon Nanotubes for Antimicrobial Application Nur Zetty Amirah Kadri; Mohd Hamzah Harun; Izzuddin Mohd Zaharuddin; Nor Adnin Ezani Mohd Ezani; Norfazlinayati Othman; Mahathir Mohamed; Mohd Sofian Alias; Mohd Faizal Abd Rahman; Khairil Nor Kamal Umar; Nurul Huda Mudri
Journal of Material Science and Radiation Vol. 2 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/jmsr.v2i2.724

Abstract

This study presents the development of high-performance radiation curable acrylate coatings reinforced with functionalized carbon nanotubes (F-CNTs) synthesized from waste plastic bottles by chemical vapor deposition method for antimicrobial applications. Epoxy and polyurethane acrylate resins (Ebecryl 600 and Ebecryl 210) were formulated with varying F-CNT loadings (0.05–0.70 wt%) and subjected to different ultraviolet (UV) curing exposure by varying UV exposure. Fourier Transform Infrared (FTIR) analysis confirmed successful photopolymerization through the reduction of acrylate functional groups and formation of a crosslinked network. Thermogravimetric analysis (TGA) demonstrated enhanced thermal stability and increased char residue at higher F-CNT concentrations (0.70 wt%), attributed to the barrier effect of nanotubes with the expense of crosslinking density due to the shading effect of F-CNTs. Antimicrobial study using E. coli revealed a significant reduction in bacterial viability, achieving near-complete inhibition within 24 h of exposure. The results highlight that optimal F-CNT dispersion is critical, as potential excessive loading can hinder curing efficiency due to agglomeration. Overall, this work demonstrates a sustainable and effective strategy for developing multifunctional coatings with enhanced durability and antimicrobial performance for healthcare and industrial applications
Co-Authors Farah Fadzehah Hilmi Izzuddin Mohamad Zaharuddin Izzuddin Mohamad Zaharuddin Izzuddin Mohd Zaharuddin Izzuddin Mohd Zaharuddin Khairil Nor Kamal Umar Khairil Nor Kamal Umar Khairul Aiman Khairi Khairul Azhar Abdul Halim Khairul Azhar Abdul Halim Mahathir Mohamed Mahathir Mohamed Mahathir Mohamed Mahathir Mohamed Mohd Faizal Abd Rahman Mohd Faizal Abd Rahman Mohd Hamzah Harun Mohd Hamzah Harun Mohd Hamzah Harun Mohd Sofian Alias Mohd Sofian Alias Mohd Sofian Alias Mohd Sofian Alias Nor Adnin Ezani Mohd Ezani Nor Adnin Ezani Mohd Ezani Nor Batrisya Ismail Nur Zetty Amirah Kadri Nurul Huda Mudri Nurul Huda Mudri Rida Tajau Rida Tajau Rusdyana Natasa Ghazali Siti Nur Eyisha Wafa Mohd Aminuddin Zainal Abidin Talib