Fatty acid coated iron oxide nanoparticle: Effect on stability, particle size and magnetic properties

Ong, Hun Tiar and Suppiah, Durga Devi and Julkapli, Nurhidayatullaili Muhd (2020) Fatty acid coated iron oxide nanoparticle: Effect on stability, particle size and magnetic properties. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 606. p. 125371. ISSN 0927-7757, DOI https://doi.org/10.1016/j.colsurfa.2020.125371.

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Official URL: https://doi.org/10.1016/j.colsurfa.2020.125371


Iron oxide nanoparticles (IONP) have been used as a magnetic base for polymeric composites. However, the magnetic properties of IONP are not fully exploited due to the difficulties to obtain a good dispersion and high stablity within the polymeric matrix. The objective of this study is to improve the stability, dispersive ability and separability of IONP by fatty acid coating. Fatty acid coated iron oxide nanoparticle (C-IONP) has been selected due to its hydrophobicity and hydrophilicity characteristics and consequently useful to be incorporated with nitrile butadiene rubber (NBR) as a polymeric compound model. The facile precipitation method has been used to synthesize C-IONP with good polydispersity of iron oxide nanoparticle (IONP) and high compatibility with polar and non polar medium was addressed. Iron (II) sulphate heptahydrate and ammonium hydroxide were selected as precursors to synthesize IONP at 60 °C at 1.5 h aging time and subsequently coated with series of fatty acids (oleic, capric, myristic, palmitic and stearic acids). It is observed that, oleic acid C-IONP has excellent compatibility in water and NBR latex medium, with small hydrodynamic size and narrow particle size distribution. This is due the existence of double bond in oleic acid backbone chain. The magnetization saturation of oleic acid C-IONP was 54.53 emu/g hence it can be incorporated to NBR latex. This therefore demonstrated that, highly magnetic polymeric composite could be produced with good and homogeneously dispersed and stable IONP. © 2020 Elsevier B.V.

Item Type: Article
Funders: SATU President Award Research Grant ( ST011-2019 )
Uncontrolled Keywords: Coated iron oxide nanoparticle (IONP); Fatty acid; Oleic acid; NBR latex
Subjects: Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 25 Aug 2020 07:02
Last Modified: 25 Aug 2020 07:02
URI: http://eprints.um.edu.my/id/eprint/25453

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