Microgels at droplet interfaces of water-in-oil emulsions-challenges and progress

Most of the commonly used microgels (MGs) are hydrophilic and tend to form oil-in-water emulsions. In this review, we discuss the function of MGs at the droplet interface in order to stabilize water-in-oil (w/o) emulsions. This topic addresses both interesting questions in fundamental research and a significant impact for applications, where the w/o emulsion type is of essential importance. Promising approaches to stabilize w/o emulsions with MGs are highlighted from different perspectives, ranging from novel MG modifications to assisted co stabilization by adding soft or hard particles. We summarize the accumulated knowledge, evaluate the challenges and solutions, and highlight future research trends.

Automated summary

This review discusses the function of microgels at the droplet interface to stabilize water-in-oil emulsions. Various approaches to stabilize water-in-oil emulsions with microgels are highlighted, including novel microgel modifications and assisted co-stabilization with soft or hard particles. The accumulated knowledge, challenges, and future research trends in this field are summarized.