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Biopolymer Based Micro- and Nano-Materials by Nitar Nwe

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4.Preparation of macro-, micro- and nano-materials using biopolymers

4-APreparation of macro-, micro- and nano-sized particles using biopolymers Preparation of chitosan coated alginate beads

Flow chart for preparation of chitosan coated Ca-alginate beads is shown in Figure 4-1. As shown in SEM images, pore size in and on the beads depend on material coated on beads.

Preparation of nanoparticles

Over the past 30 years, four methods (ionotropic gelation, microemulsion, emulsification solvent diffusion and polyelectrolyte complex) for preparation of chitosan nanoparticles have been developed based on chitosan microparticles technology [40]. Most of nanoparticles are prepared by ionotropic gelation method which is dropping a solution to biopolymer ...

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