摘要
乳状液用于微细颗粒的合成已引起人们的关注,但乳状液是一种热力学不稳定体系,对其应用产生很大的限制。以煤油为油相,P204(二-(2-乙基己基)磷酸酯)为载体,选取Span 80和丁二酰亚胺类表面活性剂T155为膜相稳定剂,以溶胀率和泄漏率为衡量标准,考察了表面活性荆类型及用量、内水相浓度、载体用量等因素对用于制备微细颗粒的乳状液的稳定性的影响。丁二酰亚胺类表面活性剂与常用的Span 80相比,具有更好的耐酸碱性能。在实验范围内,表面活性剂用量的增加有利于乳状液的稳定;乳状液的溶胀率和泄漏率均随着载体浓度的增加而增大。实验确定了几种稳定性较好的可用于微细颗粒制备的乳状液。
The use of emulsion liquid membrane （ELM） to synthesize fine particles has gained wide attention. However, as the emulsion is a thermodynamic unstable system, its application has been greatly restricted. Taking kerosene as solvent, P204 as extractant （cation carrier）, Span 80 or various succimide T155 as surfactants, the effects of surfactant concentration, concentration of acid and base in the internal phase and carrier concentration on swelling and leaking ratio were studied to determine the stability of ELM. Compared with Span 80, succimide has better resistance to acid and base. In the experiment range, the increase of surfactant concentration is beneficial to the stability of the emulsion, with the increasing of carrier concentration, the swelling and leaking ratio of the emulsion were all increased. The stable emulsions were chosen to lay foundation for synthesizing various fine particles.
出处
《渤海大学学报（自然科学版）》
CAS
2007年第3期215-220,共6页
Journal of Bohai University:Natural Science Edition
基金
国家自然科学基金项目(No:20006001)
