Preparation of morphology-controllable PGMA-DVB microspheres by introducing Span 80 into seed emulsion polymerization

Abstract

The obtained PGMA-DVB microspheres showed a variety of morphologies by adjusting the amount of Span 80 in the seeded emulsion polymerization.

Petroleum hydrocarbon release behavior study in oil-sediment aggregates: turbulence intensity and chemical dispersion effect

“…This was because Span 80 could easily form inverse micelles with water or water-soluble monomers. 43 In the presence of the four dispersants, C 17 -C 30 had a higher residual concentration than other alkane components.…”

Smart gating porous particles as new carriers for drug delivery

“…The pore size distribution and BET surface area of the product depended on the amount of Span 80: those without Span 80 exhibited the smallest pore size (10 nm) and a surface area value of 325 m 2 g -1 . In contrast, those produced with 0.6 ml of Span 80 presented a microporous morphology with an average pore size of 12 nm and a surface area of 192 m 2 g -1[75].…”

“…As porogen is inert and can be homogeneously dissoluble within an organic phase, its removal leads to both external and internal pores [48]. Three main requirements may be listed for porogens selection: (i) non reactivity with the precursor, (ii) solubility in the solvent, and (iii) miscibility with other substances (e.g., monomers, initiator and crosslinker) [74,75]. Low molecular weight polymers (e.g., polyethyleneglycol, PEG) or surfactants are usually used as porogens.…”

“…The modified surface property of chitosan porous particles presented a hierarchical or interconnected porous structure and excellent adsorption of 302 mg.g -1 bovine hemoglobin within 15 min[110]. Cong et al studied the effect of Span 80 on the morphologies of poly(glycidyl methacrylate-divinylbenzene) (PGMA-DVB) microspheres by using seed emulsion polymerization[75]. The pore size distribution and BET surface area of the product depended on the amount of Span 80: those without Span 80 exhibited the smallest pore size (10 nm) and a surface area value of 325 m 2 g -1 .…”

Preparation and modification of PS–PMMA microspheres and their application in high performance liquid chromatography

“…6 These excellent properties of PS microspheres have attracted extensive attention of researchers. [7][8][9][10][11][12] In addition, PMMA is an amorphous thermoplastic polymer formed from the methyl methacrylate monomer, which is known for its high impact strength, light transmission, good processing conditions and outstanding biocompatibility compared to other polymers, and thus PMMA microspheres have attracted a lot of attention in the eld of HPLC.…”