Filter Materials Based on Mineral Fibers with Biopolymer Layer

Бровко, О. С.; Valchuk, Natalia; Boytsova, T. A.; Паламарчук, И. А.; Боголицын, К. Г.; Sysoeva, N. V.; Dubovyy, V.K.

doi:10.17238/issn0536-1036.2017.1.186

Cited by 4 publications

(1 citation statement)

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“…The presence of polar ionic groups and hydrophobic regions in ALG and CHT macromolecules facilitates their combination in solution without significant energy consumption due to the formation of intermolecular ionic, hydrogen bonds, and hydrophobic interactions. Ionic bonds are formed mainly between the carboxyl groups of ALG and amino groups of CHT and have a cooperative character, 30‐32 which leads to the formation of the interpolyelectrolyte complex (IPEC) with macroblock structure. ALG enters into a polyelectrolyte reaction with CHT, according to Equation (2):

{(R — {COO}^{-} {Na}^{+})}_{n} + {(^{-} {OOCH}_{3} С^{+} {NH}_{3} — {normalR}_{1})}_{m} ⇆ ⇆ ([], {(R — {COO}^{-} \dots^{+} {NH}_{3} — {normalR}_{1})}_{x} \cdot {(R — {COO}^{-} {Na}^{+})}_{n - х} \cdot {(^{-} {OOCH}_{3} С^{+} {NH}_{3} — {normalR}_{1})}_{m - x}) + x {Na}^{+} + x {CH}_{3} COO

…”

Section: Results and Their Discussionmentioning

confidence: 99%

Preparation of bioactive aerogel material based on sodium alginate and chitosan for controlled release of levomycetin

Gorshkova

Бровко

Паламарчук

et al. 2021

Polymers for Advanced Techs

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This work was aimed at obtaining new highly porous two‐component alginate‐chitosan aerogels for use as a controlled‐release drug delivery system. Aerogel materials were prepared on the basis of the sodium alginate–chitosan interpolymer complex using sol–gel and supercritical fluid technologies. The effect of the ratio of sodium alginate and chitosan on the textural characteristics of aerogels and their water uptake capacity was studied. The obtained materials are characterized by a developed mesoporous structure and a specific surface area of up to 260 m2g−1. It was established that 1 g of alginate‐chitosan aerogel retains up to 35 g of water. The polyelectrolyte nature of the aerogel material, shape stability, high specific surface area, developed mesoporous structure, open cylindrical pore shape, and high water absorption make the alginate/chitosan aerogel material attractive for the purposes of sorption and application therapy. The aerogels can be used as drug delivery system demonstrating prolonged levomycetin release kinetics. The content of released levomycetin from the aerogel matrix within 4 h was up to 95%.

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