Magnetic and dielectric properties of nickel-ferrite-embedded natural rubber composites

• Published in: Polymer bulletin (Berlin, Germany) Vol. 75; no. 11; pp. 5217 - 5234
• Main Authors: Menon, Sankar S., Krishna, Radhu, Wilson, Lida, Sambhudevan, Sreedha, Shankar, Balakrishnan, Mayeen, Anshida, Kalarikkal, Nandakumar
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.11.2018; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Composite materials; Dielectric properties; Magnetic properties; Mechanical properties; Nanoparticles; Natural rubber; Nickel; Nickel ferrites; Organic Chemistry; Original Paper; Particle size; Physical Chemistry; Polymer Sciences; Rubber; Soft and Granular Matter; Solvents; Spectrum analysis; Temperature; Dielectric permittivity; Natural rubber; Interfacial polarization; Nickel ferrite
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-018-2323-0

Spinel-structured nickel ferrite has been prepared using co-precipitation method. The ferrite particles prepared were characterized using XRD, FTIR, and TEM and were confirmed to be in the nano-regime. Natural rubber composites were prepared with different loadings of nickel ferrite like 5, 15, 25, 50, and 75 (in part per hundred rubber, phr). The mechanical, swelling, and magnetic properties were analyzed using the standard methods. Dielectric measurements show that permittivity decreases with increase in frequency and increases with increase in ferrite loading. Tan delta value also was found to increase with filler loading which may be attributed to the presence of interfacial polarization.