Abstract
W1-O-W2 composite droplets are prepared using droplet microfluidics and core-hollow poly(α-methylstyrene) (PAMS) shells are fabricated by microencapsulation. This work examines the effects of alkanes on stability and deformation of double droplets. Results manifest that alkanes benefit resisting the deformation of the double droplets and improving the sphericity of the resulting polymer shells. Moreover, with shortening the chain length of the alkane, the deformation of double droplets is resisted and the sphericity of the solidified shells is improved. However, the addition of alkanes promotes the coalescence between the droplets, decreasing the yield of individual shells. The results presented in this work provide a feasible method to fabricate individual polymer shells with high sphericity.
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