A facile strategy to improve the encapsulation efficiency of polymer microcapsules containing water‐soluble salt cores

Abstract

To increase the encapsulation efficiency of microcapsules composed of water‐soluble salt cores and hydrophobic material shells, we herein reported a facile and versatile strategy to improve the hydrophobicity of water‐soluble salts [i.e., ammonium persulfate (APS)] by surface modification of APS using oleic acid or silane coupling agent, respectively. The results confirmed that the hydrophobicity of the two modified APS had been successfully improved compared with that of non‐modified APS. Moreover, the two modified APS could be effectively encapsulated into hydrophobic polystyrene and the encapsulation efficiency of the resulting microcapsules goes up significantly. This study was expected to drive progress in the preparation technology of microcapsules which comprise water‐soluble salts as cores and hydrophobic polymer materials as shells in many industrial application fields. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45294.

Fabrication of sustained‐release and antibacterial citronella oil‐loaded composite microcapsules based on Pickering emulsion templates

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“…[11][12][13][14][15][16][17][18] Therefore, it is feasible to encapsulate persulfates to delay the release of gel breaker; this is of universal interest. 8,19,20 It is challenging to encapsulate a water-soluble active ingredient, [21][22][23][24] and encapsulation methods for persulfates are relatively less available. As the most water-soluble active ingredient, persulfates are mainly encapsulated via fluidized bed coating.…”