Emulsion templated encapsulation processes relying on interfacial polymerization and formalin (e.g. urea-formaldehyde) shell chemistries have been extensively employed for the encapsulation of hydrophobic actives. There are far fewer examples of inverse emulsion templated encapsulation of hydrophilic actives, and aliphatic amine species have proven to be especially resistant to encapsulation due to their nonspecific solubility profile (good solubility in most organic solvents and neutral water) and a nucleophilic and basic character that interferes with standard shell forming reactions.  We will report a method for the encapsulation of aliphatic amines from inverse Pickering emulsions using interfacial polymerization to form the shell.  Characterization of the capsule shells and encapsulation efficiency (nearly quantitative) will be discussed.

Efficient encapsulation of hydrophilic actives including aliphatic amines

246th National Meeting (2013)

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