This method allows materials to reach otherwise inaccessible locations. However, existing capsule fabrication techniques are complicated, lack satisfactory control in release kinetics, and require high temperatures and pressures, limiting the types of encapsulant materials. Therefore, a new method addressing the aforementioned issues would clearly advance the state of art in several fields.

INNOVATION:  The innovation represents a way to address all the drawbacks listed above. The process encapsulates the desired ingredients in a synthetic polymeric capsule using either UV light, solvent evaporation, or a certain hardening agent. The core-shell encapsulation structure combined with improved processing methods not only fully protects active ingredients but also allows for higher loading capacities. The method also drastically improves on existing techniques in terms of its mass transfer characteristics, throughput, size distribution statistics, and mechanical durability.

POTENTIAL APPLICATIONS 

• Timed-release of pesticides, fertilizers, and other agricultural supplements
• Self-healing structural composite materials, by encapsulating adhesive packages
• Controlled drug delivery

ADVANTAGES

• Reduced number of steps in production process
• This core-shell structure affords higher active ingredient loading and minimal use of encapsulant material
• Capsule size can be accurately and reliably tuned from 0.1 - 1,000 microns
• Process enables high throughput and minimizes yield losses
• Precise control of release of ingredients
• Elimination of high temperatures and pressures from the encapsulation process

Reference: UCLA Case No. 2005-136

US Patent App: 2006/0071357-A1