Advanced technology in the field of formulated materials allows scientists to use an ever-expanding repertoire of additives to create robust, effective products to provide every-day help to consumers. The desire for more and better materials then requires the chemist to develop more stable and effective technology. With this comes testing for shelf stability, hoping that such products will remain on the shelf for long duration of time while still maintaining their integrity. Typical methods for stability testing involve visual analysis in the presence of heat but may still take weeks to months to complete and are subjective in nature.  To improve the method of stability analysis, we propose here a technique involving Static Multiple Light Scattering (SMLS). In this method, backscattered or transmitted light is collected over the entire sample height of a material over time to gain high-resolution data into particle size and concentration changes. This allows for fast and accurate kinetic to be built and ranked in order to quantify the physical evolution of a sample based upon the changes in chemistry that were implemented by the scientist.  To prove the efficacy of this method, results will be presented from multiple industries highlighting the ability of the method to analyze and predict the stability of emulsions and suspensions. Results from studies that use the method for R&D fingerprinting, QC analysis, and long-term shelf life studies will be discussed along with future potential applications for the technology.

Removing the guesswork from stability analysis: Quantifying and prediction of the physical stability of dispersions

2019 Fall National Meeting

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