pH-Controlled Permeability of Layered Hydrogen-Bonded Polymer Capsules
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The hollow capsules whose wall is composed of layer-by-layer (LbL)-deposited and chemically cross-linked hydrogen-bonded polymers was investigated. The capsule swelling and permeability was contrasted in a wide range of pH, when such capsules transit from hydrogen-bonded cross-linked multilayers to highly swollen hydrogels with no intermolecular association, and their properties were compared with those found for hollow capsules composed of poly (methacrylic acid) (PMMA) hydrogel. Thickness measurement of dry LbL non-cross-linked and cross-linked films were done using a homemade phase-modulated ellipsometer. The results show that pH-responsive two-component PVPON-NH2-20/PMMA capsules can be produced through carbodiimide-assisted cross-linking of hydrogen-bonded multilayers.
author list (cited authors)
Kozlovskaya, V., & Sukhishvili, S. A
complete list of authors
Kozlovskaya, Veronika||Sukhishvili, Svetlana A