Anisotropic magnetic microparticles from ferrofluid emulsion

Highly temperature responsive core–shell magnetic particles: Synthesis, characterization and colloidal properties

“…1B and C for cross-linked magnetic polystyrene particles and DVB cross-linked magnetic particles respectively. The results observed here are compatible to the works done before wherein core-shell [31,32] and anisotropic [33] magnetic polystyrene particles were prepared from magnetic emulsion. It is noticed that the polymerization of St while DVB as cross-linker or only DVB in the presence of magnetic ferrofluid droplets lead to make a crosslink polymer shell on the surface of the magnetic seeds.…”

“…Core-shell structure and Janus like magnetic polymer particles preparation from oil-in-water magnetic emulsion by the emulsion polymerization of Styrene (St) and cross-linker DVB were described in previous reports [31][32][33]. According to the above literatures, cross-linked magnetic polymer particles were prepared using free radical emulsion polymerization of St/DVB (60/40%) or 100% DVB in the presence of oil-in-water magnetic emulsion.…”

Incorporation of iron oxide nanoparticles into temperature-responsive poly (N-isopropylacrylamide-co-acrylic acid) P (NIPAAm-AA) polymer hydrogel

“…The microconatiner was finally obtained by the removal of PMAA core. More effort has also been paid to the seed polymerization for polymer coating of micrometer size magnetic nanoparticles [21,22]. However, direct seed polymerization has disadvantages in some extent such as functional groups suppression and inappropriate encapsulation of seed particles.…”

A side-by-side capillaries-based microfluidic system for synthesizing size- and morphology-controlled magnetic anisotropy janus beads

“…Physical approaches such as a selective masking tools combined with gold evaporation [10,13], colloidal crystallization [9,10,13], microcontact printing [9,10,13] and electrical jetting [8][9][10]13,14] have been developed. However, all these methods suffer from difficulties to achieve a large volume production and thus are limited in their widespread use [9,13]. Recently, Ning et al [14] have presented a facile route to the production of janus microspheres with dual anisotropy of porosity and magnetism based on Pickering-type double emulsions.…”

“…Due to their unique morphology, janus particles differ from more conventional isotropic particles. Janus particles with diverse functions have great potential in applications such as emulsion stabilization [4,5], optical probes for biological interactions and rheological measurements [6], sensors [2,7,8], self-assembly of building block components [9] and medical field [10]. In particular, particles with magnetic anisotropy have recently attracted a lot of interest in biomedical applications, for example, drug delivery [11], detection in magnetic resonance imaging [8], nucleic acids separation [12] and so on, owing to their controllable rapid-response to an external magnetic field.…”