Carboxymethylcellulose acetate butyrate/poly(4-vinyl-N-pentyl pyridinium bromide) blends as antimicrobial coatings

Blachechen, Leandro Schafranski; Amim, Jorge; Lincopán, Nilton; Petri, Denise Freitas Siqueira

doi:10.3144/expresspolymlett.2015.74

Cited by 3 publications

(5 citation statements)

References 29 publications

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“…Poly(4-vinyl-N-pentyl pyridinium bromide) (QPVP) was synthesized as described elsewhere [18]. Briefly, PVP (10 wt%) was dissolved in anhydrous ethanol in a flask with a reflux condenser.…”

Section: Synthesis and Characterization Of Poly(4-vinyl-n-pentyl Pyrimentioning

confidence: 99%

“…3b,d). Alg-QPVP remained over one year in water without losing form and biodecomposition; QPVP is well known for its antimicrobial activity [17,18]. On the other hand, Alg beads cannot be stored in water for longer than two weeks due to the growth of microorganisms.…”

Section: Tablementioning

confidence: 99%

“…In the present study, we present a novel adsorbent for Cr(VI) composed of Alg beads, which were modified by the adsorption of poly(4vinyl-N-pentylpyridinium bromide), QPVP, an outstanding antimicrobial polycation [17,18]. The Alg-QPVP beads were characterized by means of Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and elemental analysis (CHN).…”

Section: Introductionmentioning

confidence: 99%

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Hybrid polysaccharide beads for enhancing adsorption of Cr(VI) ions

Carvalho

Kelmer

Fardim

et al. 2018

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Alginate (Alg) beads were modified by the adsorption of poly(4-vinyl-N-pentyl pyridinium bromide (QVPV) polycation, aiming towards the adsorption of Cr(VI) ions from aqueous solution. The adsorption isotherm of QPVP onto Alg beads fitted well the Langmuir adsorption model, yielding maximum adsorption capacity (q max) of 91 mg g −1 and high constant affinity of 7.53 × 10 7 L mol −1. X-ray photoelectron spectroscopy and elemental analysis indicated that the QPVP chains were mainly on the Alg beads surface. The adsorption of Cr(VI) in the dilute range (0.5 mg L −1 to 10 mg L −1) on Alg-QPVP beads in batch system was investigated by means of flame atomic absorption spectrometry. Under optimal adsorption conditions (HNO 3 , pH 2, 6 mg of dried beads, 15 mL of solution, 30 min contact time) the nonlinear fitting with Langmuir model yielded q max of 18 mg g −1 and constant affinity of 124 L mol −1 , whereas the q max of 156 mg g −1 and adsorption energy of 9.8 kJ mol −1 were obtained from linear fitting with Dubinin-Radushkevitch model. The breakthrough curves obtained for Cr(VI) at 100 mg L −1 in the fixed bed column system were fitted to the Adams-Bohart and Thomas models. Fitting parameters indicated a fast dynamic adsorption process, which takes place mainly on the beads surface. The reduction of adsorbed Cr(VI) ions to Cr(III) by ascorbic acid, a non-toxic biological reductant, allowed the fast and complete recycling of the Alg-QPVP beads for at least 20 times without losing performance. Novel Alg-QPVP beads presented attractive features for dynamic process, such as quickness (k > 1 × 10 −3 L mg −1 min −1) and high adsorption capacity in the dilute range, low cost and recycling possibility.

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“…Poly(4-vinyl-N-pentyl pyridinium bromide) (QPVP) was synthesized as described elsewhere [18]. Briefly, PVP (10 wt%) was dissolved in anhydrous ethanol in a flask with a reflux condenser.…”

Section: Synthesis and Characterization Of Poly(4-vinyl-n-pentyl Pyrimentioning

confidence: 99%

Section: Tablementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid polysaccharide beads for enhancing adsorption of Cr(VI) ions

Carvalho

Kelmer

Fardim

et al. 2018

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…The majority of these products is biocompatible and biodegradable and has shown potential application such as bioresorbable sutures, drug delivery, implants, tissue scaffolding, and among others . Cellulose is one of these bio‐based products known as the most abundant regenerated biopolymer in the planet; most of the cellulose is utilized in industry as raw materials in paper production . Cellulose acetate butyrate (CAB) and cellulose acetate propionate (CAP) are the most important commercially esters used .…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9] Cellulose is one of these bio-based products known as the most abundant regenerated biopolymer in the planet; most of the cellulose is utilized in industry as raw materials in paper production. [10][11][12] Cellulose acetate butyrate (CAB) and cellulose acetate propionate (CAP) are the most important commercially esters used. [13][14][15][16][17] There are numerous reports in the literature associated with polymer nanocomposites based on preparation characterizations and properties of cellulose and its derivatives.…”

Section: Introductionmentioning

confidence: 99%

Thermal Behavior of Binary and Ternary Blends Based on Poly (Styrene‐co‐Allyl Alcohol)/Cellulose Acetate Butyrate and an Organically Modified Bentonite

Ouaad

Mehai

Bahri

et al. 2019

Macromolecular Symposia

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Binary and ternary blends based on an organically modified bentonite, originated from Maghnia Algeria (OBT), poly (styrene‐co‐allyl alcohol) (PSAA) containing 40 mol% of allyl alcohol and cellulose acetate butyrate (CAB) of different ratios, are elaborated via solution intercalation method in tetrahydrofuran (THF) as solvent. These binary and ternary blends are investigated by X‐ray diffraction (XRD), scanning electron microscopy (SEM), FTIR spectroscopy, differential scanning calorimetry (DSC), and thermogravimetry analysis (TGA). Due to the occurrence of favorable specific interactions between the constituents of the blends, as evidenced by FTIR, PSAA40/CAB system is miscible in the whole composition range. Indeed, a single glass transition temperature (Tg), intermediate between those of the pure components is observed with each initial mixture. The effect of the organo‐clay and its dispersion within the blend matrix on the morphology and thermal behavior of the miscible PSAA/CAB blends of different ratios and of their corresponding ternary hybrids blends is discussed. The Tg of the ternary blends increased by 5–10 °C compared with their corresponding virgin blends. Significant improvement of thermal stability of ternary hybrids compared to their virgin ones was evidenced by TGA.

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