Sodium lauroyl isethionate (SLI) has become a popular alternative to traditional surfactants in the personal care market. This is due to its increased product performance in hard water, and mildness compared to other synthetic detergents. Recent work has enabled high purity SLI to be produced, allowing for isolated analysis and characterization of its solid crystalline phase. Due to the synthesis method used in industry, once produced SLI can remain at high temperature in the liquid phase for extended periods of time. Despite inert conditions preventing major chemical decomposition, relaxation was found occur in the liquid crystal phase leading to changes in the subsequent crystallization. This included higher temperature phase changed points and and an changes to the interlamellar spacing.

How does high temperature aging influence the thermal properties and crystal structure of sodium lauroyl isethionate?

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.