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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Double emulsion template suspension polymerisation: towards the synthesis of polyelectrolyte core porous hydrophobic shell particles for environmental applications
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Double emulsion template suspension polymerisation: towards the synthesis of polyelectrolyte core porous hydrophobic shell particles for environmental applications

机译：双乳液模板悬浮液聚合：面向环境应用的聚电解质核心多孔疏水壳颗粒的合成

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摘要

Herein we report a novel synthetic strategy for the synthesis of micrometre sized core-shell particles comprising a polyelectrolyte core and a porous hydrophobic shell. A water-in-oil-in-water (W1/O/W2) double-emulsion was used as the template for the simultaneous polymerisation of both the internal aqueous and the intermediate oil phase leading to the formation of a cross-linked poly(acrylic acid) (PAAc) core contained in a poly(4-tert-butylstyrene-co-divinylbenzene) (poly(4-tBSty-co-DVB)) shell. The mass transport process from the internal aqueous phase to the external phase was reduced by means of an "oil phase locking" mechanism in which a rapid gel point transition of the oil phase ensured stability against internal aqueous-external aqueous phase (W1-W2) coalescence. The formation of core-shell particles was favoured by the effect of acrylic acid monomer which was responsible for the selective destabilization of the internal aqueous/oil interface (W1/O) allowing rapid internal aqueous phase coarsening. The particles thus obtained were investigated as potential sorbent materials for the simultaneous removal and encapsulation of organic and inorganic cationic species from aqueous solutions.
机译：在本文中，我们报告了一种新颖的合成策略，用于合成微米级的核壳颗粒，该颗粒包括聚电解质核和多孔疏水壳。使用水包油包水（W1 / O / W2）双乳液作为模板，同时聚合内部水相和中间油相，从而形成交联的聚（聚（4-叔丁基苯乙烯-co-二乙烯基苯）（poly（4-tBSty-co-DVB））外壳中包含的丙烯酸（PAAc）核。通过“油相锁定”机制减少了从内部水相到外部相的传质过程，其中油相的快速胶凝点转变确保了对内部水-外部水相（W1-W2）的稳定性合并。丙烯酸单体的作用有利于核-壳颗粒的形成，丙烯酸的作用是内部水/油界面（W1 / O）的选择性失稳，从而使内部水相迅速变粗。研究了由此获得的颗粒作为潜在的吸附剂材料，用于同时从水溶液中去除和包封有机和无机阳离子物种。

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