We describe the preparation of novel colloids and microfibers with spatially confined photoreactive polymers via electrohydrodynamic (EHD) co-jetting. Multicompartmental colloids and microfibers containing photocrosslinkable polymer (PVCi) in one compartment are prepared and the selective photoreaction is achieved with simple UV irradiation on anisotropically incorporated PVCi in one compartment of either colloids or microfibers. Particle and fiber structure can be controlled by adjusting concentration of the jetting solution. After solvent treatment of biphasic particles and fibers after photocrosslinking, hemicapsules with porous structure and PVCi microfibers with small diameter can be obtained from biphasic particles and fibers, respectively, which can be evidence for successful anisotropic photocrosslinking. This study further elucidates unique physical properties that arise from the bicompartmental character of the particles and fibers. Furthermore, this technique can be extended to prepare divers anisotropic colloids and microfibers compartmentalized by functionally heterogeneous polymers.

Spatially confined photoreactions in multicompartmental colloids and fibers prepared by electrohydrodynamic co-jetting

242nd National Meeting (2011)

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