Preparation and analysis of multilayer composites based on polyelectrolyte complexes

Петрова, В. А.; Orekhov, Anton S.; Chernyakov, Daniil D.; Baklagina, Yu. G.; Романов, Д. А.; Кононова, С. В.; Volod’ko, Aleksandra V.; Ermak, I. M.; Klechkovskaya, V. V.; Skorik, Yury А.

doi:10.1134/s1063774516060110

Cited by 25 publications

(27 citation statements)

References 12 publications

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“…Successive immersions of the wrung-out BC ribbon into the solution of anionic polysaccharide and then into the CS solution allowed the negatively charged groups of the polyanion to interact with the positively charged protonated amino groups of CS. As previously established [ 32 ], the strength of these interactions is determined by the amount and nature of the anionic functional groups (-COO − or -OSO 3 − ) and by the macromolecular structure of anionic polysaccharide. This strength decreases in the order of: CAR > HA > ALG [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

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Bacterial Cellulose (Komagataeibacter rhaeticus) Biocomposites and Their Cytocompatibility

et al. 2020

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A series of novel polysaccharide-based biocomposites was obtained by impregnation of bacterial cellulose produced by Komagataeibacter rhaeticus (BC) with the solutions of negatively charged polysaccharides—hyaluronan (HA), sodium alginate (ALG), or κ-carrageenan (CAR)—and subsequently with positively charged chitosan (CS). The penetration of the polysaccharide solutions into the BC network and their interaction to form a polyelectrolyte complex changed the architecture of the BC network. The structure, morphology, and properties of the biocomposites depended on the type of impregnated anionic polysaccharides, and those polysaccharides in turn determined the nature of the interaction with CS. The porosity and swelling of the composites increased in the order: BC–ALG–CS > BC–HA–CS > BC–CAR–CS. The composites show higher biocompatibility with mesenchymal stem cells than the original BC sample, with the BC–ALG–CS composite showing the best characteristics.

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Section: Resultsmentioning

confidence: 99%

“…As previously established [ 32 ], the strength of these interactions is determined by the amount and nature of the anionic functional groups (-COO − or -OSO 3 − ) and by the macromolecular structure of anionic polysaccharide. This strength decreases in the order of: CAR > HA > ALG [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

Bacterial Cellulose (Komagataeibacter rhaeticus) Biocomposites and Their Cytocompatibility

et al. 2020

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“…The previous study showed an unexpected result during the search for a specific structure of the PEС layer in model films of the CS-PEC-SEC type [18,19]. The films showed crystallization of CS in the anhydrous allotropic modification, initiated by the formation of a PEC between the polycation and polyanion layers.…”

Section: Resultsmentioning

confidence: 99%

“…The boundary between the layers of polymer counterions was also visible in the micrographs. The very thin layer present at this boundary was identified as PEC [18,19]. …”

Section: Resultsmentioning

confidence: 99%

“…Our previous work [18,19] investigated the complexation process occurring between CS and the sulfoethylcellulose (SEC) in the preparation of multilayer self-standing PEC films. We first established the film structure, especially that of the PEC layer, using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray microanalysis.…”

Section: Introductionmentioning

confidence: 99%

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Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

et al. 2017

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Two-ply composite membranes with separation layers from chitosan and sulfoethylcellulose were developed on a microporous support based on poly(diphenylsulfone-N-phenylphthalimide) and investigated by use of X-ray diffraction and scanning electron microscopy methods. The pervaporation properties of the membranes were studied for the separation of aqueous alcohol (ethanol, propan-2-ol) mixtures of different compositions. When the mixtures to be separated consist of less than 15 wt % water in propan-2-ol, the membranes composed of polyelectrolytes with the same molar fraction of ionogenic groups (-NH3+ for chitosan and -SO3− for sulfoethylcellulose) show high permselectivity (the water content in the permeate was 100%). Factors affecting the structure of a non-porous layer of the polyelectrolyte complex formed on the substrate surface and the contribution of that complex to changes in the transport properties of membranes are discussed. The results indicate significant prospects for the use of chitosan and sulfoethylcellulose for the formation of highly selective pervaporation membranes.

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Polyelectrolyte complexes of sulfoethyl cellulose–chitosan: effect of the structure on separation properties of multilayer membranes

et al. 2018

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Preparation and analysis of multilayer composites based on polyelectrolyte complexes

Cited by 25 publications

References 12 publications

Bacterial Cellulose (Komagataeibacter rhaeticus) Biocomposites and Their Cytocompatibility

Bacterial Cellulose (Komagataeibacter rhaeticus) Biocomposites and Their Cytocompatibility

Two-Ply Composite Membranes with Separation Layers from Chitosan and Sulfoethylcellulose on a Microporous Support Based on Poly(diphenylsulfone-N-phenylphthalimide)

Polyelectrolyte complexes of sulfoethyl cellulose–chitosan: effect of the structure on separation properties of multilayer membranes

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