Thermally sensitive magnetic latexes

FIGURE 12.30 The effect of pH on the desorption of preadsorbed nucleic acid molecules onto cationic thermally sensitive magnetic latex particles. Adsorption was performed using 10 mW phosphate buffer, pH 5.2, 10 M NaCl at 20°C, with an incubation time of 180 min. (From Elaissari, A. et al., J. Magn. Magn. Mater., 2001. With permission.)... 

In addition, magnetic latex with hydrophilic polymer can be produced by inverse suspension polymerization using a W/O suspension. Miiller-Schulte et al. reported [118] the preparation of hydrophilic thermally sensitive magnetic polymer particles for an in vivo contactless controlled drug release by using inverse suspension polymerization (Fig. 8). A ferrofluid and initiator ammonium persulphate... 

However, the use of water-soluble monomer in emulsion polymerization is more complicated. A potential example is the synthesis of thermally sensitive magnetic microspheres using water-soluble NIPAM, using the combination of emulsion polymerization and then seeded precipitation polymerization [140, 141], Lee et al. [140] conducted the synthesis of magnetic latex by a two-stage process at the first... 

In a quest for different applications various numbers of polymers have been chosen to prepare encapsulated and functionalized magnetic particles by soap-free emulsion polymerization. Examples are amide- and carboxyl-functionalized magnetic latex for protein immobilization [156], and thermally sensitive and carboxyl-functionalized particles for antibody purification [157], bioprocesses... 

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