Microencapsulation of n-nonadecane with sodium alginate as shell was carried out by melt coaxial
electrospraying. This approach has the potential to be a new type of vehicle for encapsulation phase change
materials. The influence of shell concentration, the flow rate of core and shell material, the working distance
and applied voltage on the microencapsulated phase change material have been studied. All the
encapsulated nonadecane are nearly satisfactorily spherical. The microcapsule size can be controlled by
adjusting the flow rates of different solutions. N-nonadecane/Alginate microcapsules (~ 30 µm) were
successfully produced. FTIR result has presented the proofs of successful melt coaxial electrospraying of
PCMs. The study of the nonadecane encapsulation reveals that the melt coaxial electrospray method cans
encapsulate PCMs in the alginate microcapsules.