Abstract

The possibility of forming water-in-oil-in-water (w/o/w) multiple emulsions stabilized solely by a mixture of organic pigment particles is demonstrated. The influence of shearing speed on both inner water drop and oil globule size is studied; both decrease with increasing shearing speed. We also investigate the effect of particle concentration for both pigments on the stability and drop size of w/o/w emulsions. The water drop and oil globule sizes decrease progressively once the particle concentration exceeds 0.5 wt%; this value corresponds to the minimum concentration required to form stable w/o/w emulsions. Finally, the release of magnesium ions from internal water drops to the external aqueous phase is studied. The release is very low over a period of one month.

摘要

证明了形成仅由有机颜料颗粒的混合物稳定化的水包油包水（w / o / w）多重乳液的可能性。研究了剪切速度对内部水滴和油滴尺寸的影响。两者均随着剪切速度的增加而降低。我们还研究了两种颜料的颗粒浓度对w / o / w乳液稳定性和液滴尺寸的影响。一旦颗粒浓度超过0.5 wt％，水滴和油滴的尺寸就会逐渐减小。该值对应于形成稳定的w / o / w乳液所需的最低浓度。最后，研究了从内部水滴向外部水相释放的镁离子。在一个月的时间内发行量非常低。