Synthesis of poly(AN)/poly(AA‐co‐AM) hydrogel nanocomposite with electrical conductivity and antibacterial properties

Abstract

In this study, a novel conductive hydrogel nanocomposite (CHN) was prepared using chemical oxidative polymerization of aniline (AN), acrylic acid (AA), and acrylamide (AM) and subsequent in situ synthesis of silver nanoparticles. The structure of CHNs was characterized by Fourier transform infrared, scanning electron microscopy, Transmission electron microscopy, EDX, X‐ray diffraction, and UV‐Vis analysis techniques and a proposed mechanism for the preparation of CHNs was also suggested. The maximum water‐swelling capacity (78 g g−1) was achieved under the optimum conditions that found to be: AA = 0.2 mol L−1, AM = 0.18 mol L−1, AN = 0.1 mol L−1, swelling time = 180 min, and temperature = 25°C. In addition, the effect of reaction parameters were studied with respect to the percent of impregnated poly(AN) within nanocomposites. Further, the electrical conductivity of CHN samples was found to be increased with the increase in AN content and temperature whose conductivity lies in the range 2.1 to 8.8 × 103 S cm−1. The temperature dependence of electrical conductivity indicates that composites follow Arrhenius model. Moreover, the synthesized CHNs demonstrated an antibacterial action against Gram‐negative Escherichia coli bacterium. In conclusion, durable antibacterial and electrically conductive CHNs can be suitable for different types of applications in many fields i.e. in biological systems, wound dressing, catalysis, water purification, and flexible electrodes for supercapacitors. POLYM. COMPOS., 40:2724–2733, 2019. © 2018 Society of Plastics Engineers

Enhancement of conductivity, mechanical and biological properties of polyaniline-poly(N-vinylpyrrolidone) cryogels by phytic acid

“…They are designed to combine intrinsic physicochemical characteristics of PANI with mechanical and chemical properties of the supporting polymer to overcome inherent brittleness of the conducting polymer for improved handling properties and opening new potential application options. Being a subclass of conducting polymer hydrogels, cryogels can be used in similar ways, for example, as sensors [2][3][4], supercapacitors [5,6], antibacterial materials [7,8], in tissue engineering [9,10] and drug-delivery [11,12]. Polyaniline cryogels are prepared by oxidative polymerization of aniline in a frozen medium containing a water-soluble polymer [1].…”

Preparation of Hydrogels Based Radix Isatidis Residue Grafted with Acrylic Acid and Acrylamide for the Removal of Heavy Metals

“…Various functional groups in hydrogels were determined by FTIR, as shown in Figure 5. The absorption band around 3430 cm −1 is related to the O-H bond [16], the sharp peak at 2927 cm −1 is related to the C sp3-stretching vibration [52], the peak at 1623 cm −1 is the stretching of the C-N bond, the peak at 1413 cm −1 is related to the stretching vibration of the -CO-bond in the phenyl hydroxyl group in lignin, the peak at 1314 cm −1 is the C-N absorption band (amide III band), the peaks at 1158 cm −1 are attributed to the stretching vibration of the ester bond in the cellulose ester group [16], the peak at 1030 cm −1 is attributed to the bending vibration of the hydroxyl group [53], and the characteristic peaks of cellulose still exist in RIR/AA-co-AM, RIR/PAA 4 , and RIR/PAM 3 hydrogels. The peak at 2852 cm −1 is the characteristic absorption peak of methylene symmetry stretching vibration, and 1454 cm −1 is the characteristic absorption peak of methylene deformation [54], the vibration peak of C=O at 1561 cm −1 , the absorption peak at 1119 cm −1 is related to the C-N stretching vibration, these characteristic peaks are all from polyacrylamide and polyacrylic acid.…”

Robust conductive nanocomposite hydrogels with an interpenetrating network based on polyaniline for flexible supercapacitors

“…Recently, a series of supercapacitors with high flexibility and stability have been developed using polyvinyl alcohol (PVA), sodium carboxymethylcellulose, polyacrylic acid (PAA), polyacrylamide (PAM), and sodium alginate, etc. as hydrogel matrixes 3,14,18–29 . However, defects such as low mechanical strength due to insufficient crosslinking, poor interfaces between electrodes and electrolytes under mechanical deformation, and potential loss of electrochemical performance during bending or stretching make it difficult to further improve the flexibility and electrochemical performance of these conductive hydrogel based energy storage devices.…”

“…as hydrogel matrixes. 3,14,[18][19][20][21][22][23][24][25][26][27][28][29] However, defects such as low mechanical strength due to insufficient crosslinking, poor interfaces between electrodes and electrolytes under mechanical deformation, and potential loss of electrochemical performance during bending or stretching make it difficult to further improve the flexibility and electrochemical performance of these conductive hydrogel based energy storage devices. Therefore, it is urgent to solve these problems and develop high-performance conductive hydrogels for flexible energy storage technologies.…”