Acrylonitrile Butadiene Styrene-Based Composites with Permalloy with Tailored Magnetic Response

Abstract

This work reports on tailoring the magnetic properties of acrylonitrile butadiene styrene (ABS)-based composites for their application in magnetoactive systems, such as magnetic sensors and actuators. The magnetic properties of the composites are provided by the inclusion of varying permalloy (Py—Ni75Fe20Mo5) nanoparticle content within the ABS matrix. Composites with Py nanoparticle content up to 80 wt% were prepared and their morphological, mechanical, thermal, dielectric and magnetic properties were evaluated. It was found that ABS shows the capability to include high loads of the filler without negatively influencing its thermal and mechanical properties. In fact, the thermal properties of the ABS matrix are basically unaltered with the inclusion of the Py nanoparticles, with the glass transition temperatures of pristine ABS and its composites remaining around 105 °C. The mechanical properties of the composites depend on filler content, with the Young’s modulus ranging from 1.16 GPa for the pristine ABS up to 1.98 GPa for the sample with 60 wt% filler content. Regarding the magnetic properties, the saturation magnetization of the composites increased linearly with increasing Py content up to a value of 50.9 emu/g for the samples with 80 wt% of Py content. A numerical model has been developed to support the findings about the magnetic behavior of the NP within the ABS. Overall, the slight improvement in the mechanical properties and the magnetic properties provides the ABS composites new possibilities for applications in magnetoactive systems, including magnetic sensors, actuators and magnetic field shielding.

Engineering the magnetic properties of acrylonitrile butadiene styrene‐based composites with magnetic nanoparticles

“…All the scale bars in the images represent 10 and 1 μm for the surface and cross section, respectively. (A) and (A′) Pristine ABS (figures from Merazzo et al 20), (B) and (B′) ABS‐CFO, (C) and (C′) ABS‐Ni, and (D) and (D′) ABS‐Co.…”

“…ABS composites have been also based on permalloy (Py: Ni 80 Fe 17 Mo 3 ), at filler contents up to 80 wt% 20 . The study not only proved the capabilities of the ABS to take high loads of NPs, but also the slight improvement of the mechanical properties and how the magnetic properties depend on NP features, such as diameter and filler content.…”

“…They are used for comparison with the rest of the MNP and the data are the ones published in Ref. 20 and are used with permission under CC-BY license (https://creativecommons.org/licenses/ by/4.0/). Two different films for each filler type were prepared and then left to dry overnight at room temperature using two different conditions for each film: (i) one film with no applied magnetic field and (ii) one film with an applied magnetic field along the cross section, that is, outof-plane (OOP-magnetic field), as represented in Figure 1E.…”

“…They are used for comparison with the rest of the MNP and the data are the ones published in Ref. 20 and are used with permission under CC‐BY license (https://creativecommons.org/licenses/by/4.0/).…”

“…19 In order to include magnetic response in polymers, nano-or micro-fillers are included to obtain magnetic polymer composites. 20 Some fillers have been studied to incorporate magnetic properties in ABS-based composites, including barium ferrite (BaFe12O19), 21 iron particles, 22 Fe 2 O 3 NP, 23 Ni nanopowder, 24 and stainless steel microparticles. 25 ABS composites have been also based on permalloy (Py: Ni 80 Fe 17 Mo 3 ), at filler contents up to 80 wt%.…”