Biopolymer chitosan: Properties, interactions and its use in the treatment of textiles

Jočić, D.; Topalovic, Tatjana

doi:10.2298/hemind0410457j

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…Smeštanjem timola unutar polimernih nosača sprečava se njegova degradacija pod dejstvom vlage, pH, temperature, enzima i postiže se lakša distribucija do željenog mesta dejstva [4]. Hitozan je linearni polisaharid dobijen deacetilovanjem hitina koji se nalazi u egzoskeletu i kutikuli ljuskara i beskičmenjaka, kao i u ćelijskom zidu zelenih algi i gljiva [5]. Veliki industrijski i komercijalni interes za upotrebu hitozana posledica je ne samo prirodnog porekla, već i niza funkcionalnih svojstava i velikog broja potencijalnih primena (farmaceutska, tekstilna i papirna industrija itd.)…”

Section: Uvodunclassified

“…[6]. Za primenu je možda od najvećeg značaja svojstvo rastvorljivosti hitozana u razblaženim rastvorima kiselina (pri pH<6) i mogućnost pripreme biokompatibilnih i biorazgradivih polimera [5]. Zbog brojnih mogućnosti za hemijsku i mehaničku obradu, netoksičnosti, antimikrobne aktivnosti, biokompatibilnosti, biodegradabilnosti [6,7], velikog afiniteta prema ćelijskoj adheziji [7], kao i antioksidativne aktivnosti [8], hitozan ima veliki potencijal za primenu u biomedicini i farmaciji (za kontrolisano otpuštanje lekova, u inženjerstvo tkiva, kod lečenja rana, genske terapije itd.)…”

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Optimization of chitosan gel preparation for supercritical impregnation of thymol

Milovanović¹,

Pantić²,

Ivanović³

et al. 2015

Tehnika

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U radu je ispitivana impregnacija različito pripremljenih hitozan gelova sa timolom pomoću natkritičnog ugljenik(IV)-oksida (nkCO2) u cilju dobijanja novih materijala sa dodatom vrednošću bez upotrebe organskih rastvarača. Optimalni uslovi natkritične impregnacije (15 MPa, 35 °C i 24 h) su definisani na osnovu prethodno ispitane rastvorljivosti timola u nkCO2. Za pripremu hidrogelova hitozana korišćeni su umreživači formaldehid i glutardialdehid. Dobijeni hidrogelovi hitozana su prevedeni u acetogelove, a potom sušeni na vazduhu ili pomoću nkCO2 kako bi se dobili kserogelovi ili aerogelovi. Najbolji rezultati u pogledu morfologije i prinosa impregancije sa timolom postignuti su za aerogel hitozana (11,30%) koji je dobijen umrežavanjem sa formaldehidom i sušenjem sa nkCO2 na 15 MPa i 50 °C.

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Section: Uvodunclassified

Optimization of chitosan gel preparation for supercritical impregnation of thymol

Milovanović¹,

Pantić²,

Ivanović³

et al. 2015

Tehnika

View full text Add to dashboard Cite

show abstract

Novel protein-repellent and antimicrobial polysaccharide multilayer thin films

et al. 2018

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Nanostructured and bio-active polysaccharide-based thin films were manufactured by means of subsequent spin-coated deposition of a regenerated cellulose (RC) layer and a 2,2,6,6-Tetramethylpiperidine-1-oxyl radical (TEMPO) oxidised cellulose nanofibril (TOCN) layer. The bio-activity of the bilayer was achieved by addition of chitosan (CS). The chitosan was either mixed with the TOCN (TOCN+CS) and deposited on the RC layer by spin-coating, or deposited on the RC and TOCN bilayer by pumping its aqueous solution with various pH over the surface of the bilayer. The water content of the thin films and the CS interactions with the bilayer during deposition were studied in situ by means of a quartz crystal microbalance with dissipation (QCM-D). The pH dependent charging behaviour of the TOCN, TOCN+CS and CS dispersions was evaluated by pH-potentiometric titrations. The surface morphology of the thin films was characterised by atomic force microscopy (AFM). The bio-activity of the thin films was evaluated by studying their protein-repellent properties in situ with a continuous flow of bovine serum albumin (BSA) by means of QCM-D and by evaluating their antibacterial properties in vitro against Staphylococcus aureus and Escherichia coli. These polysaccharide-based thin films are high value-added products because of their multifunctionality, high water absorbance capacity, protein-repellence and antimicrobial activity, and have the potential for medical application as a wound dressing material.

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Biopolymer chitosan: Properties, interactions and its use in the treatment of textiles

Cited by 2 publications

References 19 publications

Optimization of chitosan gel preparation for supercritical impregnation of thymol

Optimization of chitosan gel preparation for supercritical impregnation of thymol

Novel protein-repellent and antimicrobial polysaccharide multilayer thin films

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