Preparation of microcapsules with multi-layers structure stabilized by chitosan and sodium dodecyl sulfate

► Microcapsules developed from oil in water emulsion using SDS as emulsifier. ► Multi-layers structure of microcapsules by multistep layer by layer technique. ► Shell structure of microcapsules obtained by oppositely charged chitosan and SDS. ► Alkali treatment of microcapsules for solidification and charge neutralization. ► Swelling or small aggregation of microcapsules found after alkali treatment.