Invitro evaluations of free radical assisted microwave irradiated polyacrylamide grafted cashew gum (CG) biocompatible graft copolymer (CG-g-PAM) as effective polymeric scaffold

Bal, Trishna; Yadav, Satyendra; Rai, Nikhil; Swain, Sabyasachi; Shambhavi, .; Sandeep, Garg; Sen, Gautam

doi:10.1016/j.jddst.2020.101572

Cited by 17 publications

(11 citation statements)

References 23 publications

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“…The FTIR spectra of the prepared HCG and HCGP dry samples showed bands characteristic of the functional groups of CG and PAM polymers. The band observed in the range between 3600 and 3000 cm −1 may be attributed to the overlap of the N–H and O–H stretching vibration [ 56 , 57 ]; the overlapping of the bands may have occurred due to the presence of physically adsorbed water, since this presence greatly expands the band in this region, while the band at 1669 cm −1 corresponds to the C=O stretching present in the PAM structure. The decrease in the intensity of this band was noted for HCG and HCGP; this result is probably associated with the hydrolysis reactions, in which the amide groups (CONH 2 ) were converted to carboxylate groups (COONa) [ 58 ].…”

Section: Resultsmentioning

confidence: 99%

Superabsorbent Hydrogels Based to Polyacrylamide/Cashew Tree Gum for the Controlled Release of Water and Plant Nutrients

et al. 2021

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Agricultural production is influenced by the water content in the soil and availability of fertilizers. Thus, superabsorbent hydrogels, based on polyacrylamide, natural cashew tree gum (CG) and potassium hydrogen phosphate (PHP), as fertilizer and water releaser were developed. The structure, morphology, thermal stability and chemical composition of samples of polyacrylamide and cashew tree gum hydrogels with the presence of fertilizer (HCGP) and without fertilizer (HCG) were investigated, using X-ray diffractometry (XRD), Fourier Transformed Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA/DTG) and Energy Dispersive Spectroscopy (EDS). Swelling/reswelling tests, textural analysis, effect of pH, release of nutrients and kinetics were determined; the ecotoxicity of the hydrogels was investigated by the Artemia salina test. The results showed that PHP incorporation in the hydrogel favored the crosslinking of chains. This increased the thermal stability in HCGP but decreased the hardness and adhesion properties. The HCGP demonstrated good swelling capacity (~15,000 times) and an excellent potential for reuse after fifty-five consecutive cycles. The swelling was favored in an alkaline pH due to the ionization of hydrophilic groups. The sustained release of phosphorus in HCGP was described by the Korsmeyer–Peppas model, and Fickian diffusion is the main fertilizer release mechanism. Finally, the hydrogels do not demonstrate toxicity, and HCGP has potential for application in agriculture.

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Section: Resultsmentioning

confidence: 99%

Superabsorbent Hydrogels Based to Polyacrylamide/Cashew Tree Gum for the Controlled Release of Water and Plant Nutrients

et al. 2021

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“…A small piece of crosslinked nanofiber mat CrNF(S7-CL) of 4 mg was placed with close proximity to the tissue followed by closing the area by suturing up carefully. (Swain and Bal 2019 )(Bal et al 2020 ) The control group mice were left without any insertion of materials. After 5 days, the stitches were carefully opened up and the local tissues of the incised area were collected without harming the animal in anaesthetized condition and preserved in 10% formalin solution for histopathological studies.…”

Section: Materials and Methodologymentioning

confidence: 99%

Green nanofiber mat from HLM–PVA–Pectin (Hibiscus leaves mucilage–polyvinyl alcohol–pectin) polymeric blend using electrospinning technique as a novel material in wound-healing process

2022

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The present work is focused on fabrication of novel nanofiber (NF) mat as wound-healing scaffold using blends of novel combination of Hibiscus rosa-sinensis leaves mucilage (HLM)–Polyvinyl alcohol (PVA)–Pectin, which was never reported previously. Different ratios of the polymeric blends were electrospun by setting different parameters to achieve best possible electrospun nanofiber mat which was later crosslinked by glutaraldehyde vapor. The optimized formulation of nanofiber mat was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). The crosslinked sample was evaluated for its efficacy in wound healing using Swiss albino mice model, where rapid healing of excised wound was observed with faster epithelization in test mice group than control mice within a period of 8 days. The hemolysis test with optimized crosslinked nanofiber mat CrNF(S7-CL) indicated it to be hemo-compatible. There were no traces of optimized CrNF(S7-CL) when placed under the skin hypodermis in test mice groups revealing its biodegradable nature. The degradation pattern of CrNF(S7-CL) in soil reflects its eco-friendly behavior. Thus, the prepared nanofiber grade CrNF(S7-CL) can be considered as a novel material for faster wound healing and can also be explored for other biomedical applications.

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“…These new techniques referred as microwave assisted technique. [7][8][9] In this study we have synthesized CMC-g-P(DADMAC) by conventional as well as microwave assisted technique to get an insight on flocculation efficacy of the product, performed via both the processes.The novel graft co-polymer/flocculant was studied in treatment of potable water as well as mineral ore beneficiation by standard Jar test procedure. [10][11][12] The flocculation efficacy of our novel flocculant was compared with that of its starting material (CMC), ALUM (coagulant) and also with its various grades (of varying percentage grafting).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of a Novel Water‐Soluble Graft Copolymer for Mineral Ore Beneficiation and for River Water Treatment towards Drinking Water Augmentation

et al. 2022

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In this research paper we endeavor to publish our work on novel non acrylamide based flocculant which does not threat any acrylamide release and thus is inherently safer. A novel flocculant 'Polydiallyldimethylammonium Chloride grafted Carboxymethyl Cellulose [CMC-g-P(DADMAC)]' was synthesized by both conventional and microwave assisted method. Both the synthesis were optimized in terms of synthesis parameters. The various grades synthesized were characterized through standard characterization techniques such as Scanning electron microscope (SEM), Fourier transformation Infrared spectroscopy (FTIR), Elemental analysis, X-ray diffraction (XRD) analysis, Thermal gravimetric analysis (TGA) Differential scanning calorimetry (DSC) analysis etc. Further, the various grades of the graft copolymers were optimized as flocculant by 'standard Jar test' and 'Settling test' protocols in river water, Kaolin, iron ore and coal fine suspension. The maximum flocculation efficacy achieved was 80.9 % (Kaolin suspension), 83.6 % (coal fine suspension), 79.5 % (Iron-ore suspension) and 68.3 % (River water).

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Invitro evaluations of free radical assisted microwave irradiated polyacrylamide grafted cashew gum (CG) biocompatible graft copolymer (CG-g-PAM) as effective polymeric scaffold

Cited by 17 publications

References 23 publications

Superabsorbent Hydrogels Based to Polyacrylamide/Cashew Tree Gum for the Controlled Release of Water and Plant Nutrients

Superabsorbent Hydrogels Based to Polyacrylamide/Cashew Tree Gum for the Controlled Release of Water and Plant Nutrients

Green nanofiber mat from HLM–PVA–Pectin (Hibiscus leaves mucilage–polyvinyl alcohol–pectin) polymeric blend using electrospinning technique as a novel material in wound-healing process

Synthesis of a Novel Water‐Soluble Graft Copolymer for Mineral Ore Beneficiation and for River Water Treatment towards Drinking Water Augmentation

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