Predicting the surface composition of a spray-dried particle by modelling component reorganization in a drying droplet

- The model predicts composition in the surface of a dried multicomponent particle.
- Enrichment of the surface in the slowly diffusing component by 10-150% was predicted.
- The model predicts component profiles during drying in a droplet containing two solutes.
- Initial total solid content of the feed has a main effect on the final surface composition.