Electrochemical synthesis of poly(pyrrole-co-o-anisidine)/chitosan composite films

Yalçınkaya, Süleyman; Çakmak, Didem

doi:10.1016/j.molstruc.2017.01.040

Cited by 22 publications

(15 citation statements)

References 25 publications

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“…Figure depicts the overall spectra of the composite hydrogels with varying MCM‐41 concentrations. For CH, the characteristic absorption bands are as follows: 3418 cm −1 (combination of OH stretching and NH stretching), 2910 and 2868 cm −1 (CH stretching), 1652 cm −1 (amide II band, CO stretching of acetyl group), 1592 cm −1 (amide II band, NH stretching), 1376 cm −1 (asymmetric CH bending of CH 2 group), 1153 and 1061 cm −1 (CO stretching), and 1025 cm −1 (COC stretching) . The PVP absorption peaks are observed at 1652 cm −1 , 1421 cm −1 , 1284 cm −1 , and at 845 cm −1 , which attributed to the stretching vibration of the carbonyl group (CO), the CH bending vibration from methylene group, the stretching vibration of the pyrrolidone structure (CN) and the bending vibration of CH, respectively .…”

Section: Resultsmentioning

confidence: 99%

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

et al. 2018

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The aim of this study is to characterize and investigate the effects of the Mobil Composition of Matter No. 41 (MCM-41) concentrations (0.5, 1, 3, 5, and 10 wt%) on structural, thermal, wettability, water content, oxygen (O 2 ) permeability, and swelling properties as well as morphological characteristics of chitosan/polyvinylpyrrolidone/MCM-41 (CH/PVP/MCM-41) composite hydrogel films. In addition, hydrolytic degradability, optic transmittance, and antibacterial properties of composite hydrogels films are determined as in vitro. With increasing of MCM-41 content, the composite hydrogels showed higher thermal stability, as expected. The morphologic properties of the composite hydrogel films are studied using scanning electron microscope (SEM) technique that provide evidence for good miscibility of CH, PVP, and MCM-41. The swelling and water-absorbing properties of the composite hydrogel films are significantly improved because of enhanced hydrophilic profile. Furthermore, the antimicrobial properties of the prepared composite hydrogel films are studied against Bacillus subtilis, Escherichia coli, and Candida albicans yeast. The results showed excellent antibacterial behavior of the composite hydrogel films. The study clearly demonstrates that the prepared CH/PVP/MCM-41 composite hydrogel films may be used as a promising candidate material in various fields such as drug delivery, wound healing material, and adsorbent materials.

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Section: Resultsmentioning

confidence: 99%

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

et al. 2018

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“…In this method, platinum electrodes (surface area 2x1 cm 2 ) were used as counter and working electrodes, and Ag/AgCl electrodes were used as reference electrode. The optimal potential range (0.2–1.4 V) and scanning rate (50 mV/s), determined in the previous study, were applied for the films development [28].…”

Section: Methodsmentioning

confidence: 99%

Immobilization of Co^II‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine) on Poly(pyrrole‐co‐o‐anisidine)/Chitosan Composite Films: Application to Electrocatalytic Oxidation of Catechol

Yalçınkaya

Çakmak

2020

Electroanalysis

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In this study, poly (pyrrole‐co‐o‐anisidine)/chitosan composite (Cs) films were prepared by cyclic voltammetry technique on platinum electrode using different pyrrole and o‐anisidine mole ratios. Immobilization process was accomplished in CoII‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine)(CoL) dissolved 0.15 M acetonitrile‐LiClO4 solution by cyclic voltammetry technique at 0.2–2.0 V potential range. Three electrode methods were applied in all electrochemical studies. After immobilization process, the characterizations of the electro catalytic surfaces (Cs−CoL−Pt) were carried out by cyclic voltammetry and SEM images. The SEM images clearly indicated that the [CoL] complex is immobilized onto composite films. The electrocatalytic activity of the modified electrodes on the catechol was investigated using buffer solutions of different pH values. The results of catalytic studies revealed that, pH=10 buffer solution was the optimal solution and 1 : 1 Cs−CoL−Pt electrode was the best electrode for catechol oxidation. In square wave voltammetry measurements using this electrode, two linear working ranges were determined. The linear response ranges for catechol determination were found as 3.0 μM–6.0 μM and 16 μM–80 μM for the first and the second linear working ranges, respectively, with 1.1 μM detection limit.

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“…This was the result of amylose and amylopectin decomposition, respectively. These differing rates were the result of a greater degree of hydroxyl group exposure for amylose and was more conducive to thermal degradation (López et al, 2015;Yalçınkaya & Çakmak, 2017).…”

Section: Thermodynamic Propertiesmentioning

confidence: 99%

Development and characterization of edible bilayer films based on iron yam–pea starch blend and corn zein

Song

Wang

2021

Food Sci. Technol

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We prepared bilayer films of iron yam-pea starch and corn zein to evaluate their potential application in the packaging of instant foods and condiments. We found that the water resistance and mechanical properties of bilayer films were improved after adding a layer of corn zein compared with the monolayer films of the starch materials. Scanning electron microscopy revealed that the bilayers were close and this was reflected in increased thermal stability and biocompatibility between layers with the addition of zein. Our experimental films showed greater elongation at break than the commercial biaxially oriented polypropylene polyethylene films. Based on the results of this study, the iron yam-pea starch/corn zein films have the mechanical strength and flexibility to be used for convenience food packaging materials, which are expected to provide consumers with clean products.

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Electrochemical synthesis of poly(pyrrole-co-o-anisidine)/chitosan composite films

Cited by 22 publications

References 25 publications

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

Immobilization of Co^II‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine) on Poly(pyrrole‐co‐o‐anisidine)/Chitosan Composite Films: Application to Electrocatalytic Oxidation of Catechol

Development and characterization of edible bilayer films based on iron yam–pea starch blend and corn zein

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Electrochemical synthesis of poly(pyrrole-co-o-anisidine)/chitosan composite films

Cited by 22 publications

References 25 publications

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

Chitosan/Polyvinylpyrrolidone/MCM‐41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties

Immobilization of CoII‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine) on Poly(pyrrole‐co‐o‐anisidine)/Chitosan Composite Films: Application to Electrocatalytic Oxidation of Catechol

Development and characterization of edible bilayer films based on iron yam–pea starch blend and corn zein

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Product

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Immobilization of Co^II‐(N,N′‐bis(salicylidene)‐2‐aminobenzylamine) on Poly(pyrrole‐co‐o‐anisidine)/Chitosan Composite Films: Application to Electrocatalytic Oxidation of Catechol