基于形变记忆微反应器的乳化液膜分离机制及其固/液界面稳定性

乳化液膜（ELM）是将乳化液分散在待分离溶液中，以乳液连续相为膜，乳液内液滴为接收相，用于液-液分离的高效传质技术，但存在①高能耗所制稳定乳液会导致破乳回用困难（成膜稳定性和破乳回用简易性难以兼顾）；②分离过程中存在ELM液滴合并、润胀等问题。本项目以阳离子木质素磺酸钠与阴离子聚酰胺环氧氯丙烷树脂络合纳米团聚体络合物为增强介质，与纳米纤维素自组装构建微反应器（CMR），代替ELM乳液中的内相液滴载体，建立基于液-CMR的新型ELM分离系统。预期由CMR既成型、双亲和形变记忆的材料特性，减少制膜能耗、改善稳定性、提高破乳回用效率。CMR作用机制通过固/液界面稳定性、扩散传质稳定性、材料结构稳定性协同研究。

Emulsion liquid membrane (ELM) is a high-efficient liquid-liquid mass transfer technology，which is carried out by dispersing an emulsion in the to-be separated solution. The continuous phase of the emulsion is regarded as the membrane phase and the inner liquid droplet is regarded as the receiving phase. However, there exist (1) a stable emulsion made by high energy input process will result in difficulties in the next demulsification process (emulsion stability and simplicity of demulsification cannot coexist). (2) there are droplet consolidation and swelling problems of ELM in the separation process. In this project, a cellulose based microreactor (CMR) is used to replace the inner droplet carrier in ELM. It is expected that CMR can reduce the energy consumption, improve the stability and increase the demulsification efficiency, because of the CMR characteristics, such as: the as-shaped, amphiphilic and shape-memory properties. The mechanisms of CMR based ELM are studied from three aspects: solid/liquid interface, mass transfer stability and material stability.