乙醇对HIPEs法制备吸油憎水树脂及其性能的影响

Effect of Ethanol on Preparation and Properties of Hydrophobic and Lipophilic Resin via HIPEs Method

摘要:

以苯乙烯、二乙烯基苯为共聚单体，过硫酸铵为引发剂，十六烷基三甲基溴化铵为乳化剂，采用油包水型高内相比乳液模板法合成了聚苯乙烯/二乙烯基苯（PSD）多孔树脂。考察了相对于分散相不同体积分数的乙醇对乳液稳定性及PSD的密度、吸（释）液性、溶胀率等性能的影响。发现随着乙醇用量的增加，难以形成稳定的乳液，其密度、吸液性、溶胀性下降，而对甲苯的释放速率增加；PSD多孔材料经水-乙醇抽提后吸水率降低至0.26 cm3/g，而吸甲苯率仍达15.60~18.42 cm3/g，表现出明显的吸油憎水性能。

Abstract:

Using styrene, divinylbenzene as comonomers, ammonium persulfate as initiator, hexadecyltrimethylammonium bromide as emulsifier, porous polystyrene/ divinylbenzene (PSD) was synthesized by high internal phase emulsions (HIPEs) as template. The effects of ethanol volume fraction (relative to dispersed phase) on the emulsion stability and the properties of the PSD，such as density, absorption (release) effects of liquid, and swelling ratio, were investigated. It was more difficult to form a stable emulsion with the increase of alcohol content. In addition, the density, absorption of the liquid, swelling ratio of the PSD decreased, the release of toluene increased with the increasing of alcohol. It is worth mentioning that, after the PSDs were extracted by water-ethanol, the absorption rate of water decreased to 0.26 cm3/g, while the absorption rate of toluene was still 15.60~18.42 cm3/g. Thus, we would obtain a hydrophobic and lipophilic resin from this way.