Magnetic magnetite/epoxy nanocomposites with polyaniline as coupling agent: preparation, characterization, and property
Source abstract
Abstract
Abstract An in-situ polymerization method fabricated the electrically conductive magnetic epoxy nanocomposites with polyaniline@magnetite. With the introduction of polyaniline on the magnetite nanoparticles, the structural integrity of the synthesized epoxy nanocomposites was enhanced with the bridging effect of the polyaniline. Specifically, compared with pure epoxy, the tensile strength was improved to 82.2 MPa when 1.0 wt% polyaniline@magnetite was added to the epoxy matrix. The enhanced mechanical property is due to the enhanced interfacial interaction. With further increasing particle loading to 30.0 wt%, glass transition temperature (Tg) was decreased to 85.4 oC, which is related to the enlarged free volume between epoxy chains. The saturation magnetization of 30.0 wt% polyaniline@magnetite-epoxy composites was 12.79 emu/g. Moreover, with the assistance of polyaniline@magnetite, the thermal stability was enhanced compared with pure epoxy. The electromagnetic wave absorption of the unique polyaniline@magnetite/epoxy nanocomposites was also studied. When the content of polyaniline@magnetite reached 30.0 wt%, the reflection loss even reached 35.9 dB. This work guides the fabrication of multifunctional epoxy nanocomposites with comprehensive electrical, magnetic and mechanical properties.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electromagnetic wave absorption materials · Advanced Sensor and Energy Harvesting Materials · Dielectric materials and actuators
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (61)
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