Effect of Fe3O4 concentration on 3D gel-printed Fe3O4/CaSiO3 composite scaffolds for bone engineering

Chen, Cunguang; Wu, Jialei; Wang, Siqi; Shao, Huiping

doi:10.1016/j.ceramint.2021.04.105

Cited by 6 publications

(1 citation statement)

References 22 publications

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“…There are various substances used as reinforcement for soft, elastic composites, such as magnetic particles, which provide material control by means of a magnetic field. Among the currently known filler materials, iron oxide micro-and nanoparticles (Fe 3 O 4 , CoFe 2 O 4 ) and NdFeB are widely used to reinforce composites and grant magnetic properties [22][23][24][25]. NdFeB particles demonstrate hard ferromagnetic properties with density in a range 7.5-7.6 g/cm 3 [26].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Physiological Incubation on the Properties of Elastic Magnetic Composites for Soft Biomedical Sensors

Mystkowska

Powojska

Łysik

et al. 2021

Sensors

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Magnetic micro- and nanoparticles (MPs)-based composite materials are widely used in various applications in electronics, biotechnology, and medicine. This group of silicone composites have advantageous magnetic and mechanical properties as well as sufficient flexibility and biocompatibility. These composites can be applied in medicine for biological sensing, drug delivery, tissue engineering, and as remote-controlled microrobots operating in vivo. In this work, the properties of polydimethylsiloxane (PDMS)-based composites with different percentages (30 wt.%, 50 wt.%, 70 wt.%) of NdFeB microparticles as a filler were characterized. The novelty of the work was to determine the influence of the percentage of MP content and physiological conditioning on the properties of the PDMS-MP composites after in vitro incubation. An important essence of the work was a comprehensive study of the properties of materials important from the point of view of medical applications. Materials were tested before and after conditioning in 0.9 wt.% NaCl solution at a temperature of 37 °C. Several studies were carried out, including thermal, physicochemical, and rheological tests. The results show that with an increase of the incubation time, most of the measured thermal and physicochemical parameters decreased. The presence of the magnetic filler, especially at a concentration of 70 wt.%, has a positive effect on thermal stability and physicochemical and rheological properties. The performed tests provided important results, which can lead to further research for a broader application of magnetic composites in the biomedical field.

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