PolySciTech
division of Akina, Inc. provides a variety of modified chitosan products (https://akinainc.com/polyscitech/products/Kitopure/index.php)
as well as other polymers and research products. Chitosan has a net positive
charge due to amine units along the chain. When chitosan interacts with a negatively
charged polymer the two bind together due to ionic attraction between the
polymer chains forming what is called a polyelectrolyte complex. Recently, researchers
at Yale University and the Université Paris Diderot, used fluorescently
conjugated chitosan (a cationic polymer) from Akina, Inc. along with sulfonated
styrene (an anionic polymer) to generate microcapsules held together by the
polyelectrolyte complex formed between these two polymers. Read more: Kaufman,
Gilad, Rostislav Boltyanskiy, Siamak Nejati, Abdou R. Thiam, Michael
Loewenberg, Eric R. Dufresne, and Chinedum O. Osuji. "Single-step
microfluidic fabrication of soft monodisperse polyelectrolyte microcapsules by
interfacial complexation." Lab Chip 14, no. 18 (2014): 3494-3497. http://pubs.rsc.org/en/content/articlepdf/2014/lc/c4lc00482e
Full-Text: http://www.researchgate.net/profile/Siamak_Nejati/publication/263933420_Single-step_microfluidic_fabrication_of_soft_monodisperse_polyelectrolyte_microcapsules_by_interfacial_complexation/links/5419c56c0cf2218008bf9faa.pdf
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