2021/02/11 by Mehdi Maleki, Maleki, Mehdi, Clément de Loubens +9
Engineering · Materials Science · #Innovative Microfluidic and Catalytic Techniques Innovation #Electrohydrodynamics and Fluid Dynamics #biodegradable polymer synthesis and properties
paper · pdf · doi:10.48550/arxiv.2102.05909
A way forward for high throughput fabrication of microcapsules with uniform\nsize and mechanical properties was reported irrespective of the kinetic process\nof shell assembly. Microcapsules were produced using lab-scale emulsification\nequipment with a micro-engineered membrane in the size range 10-100 \μm. The\nshell of the microcapsules was assembled at the water-oil interface by\ncomplexation of polyelectrolytes or cross-linking of proteins providing two\ndifferent kinetic processes. Elasticity of microcapsules was characterized with\nan automated extensional flow chamber. Process parameters were optimized to\nobtain suspensions with size variations of 15%. Some strategies were developed\nto obtain uniform elastic properties according to the kinetics of shell\nassembly. If kinetics is limited by diffusion, membrane emulsification and\nshell assembly have to be split into two steps. If kinetics is limited by the\nquantity of reactants encapsulated in the droplet, variations of elastic\nproperties result only from size variations.\n