Ujwala S. Tayade; Jyotsna S. Meshram; Amulrao U. Borse
Abstract
In this study, we have chosen chitosan as capping and stabilizing agent for silica-based hydrogel synthesis. Chitosan, a biomaterial linear polysaccharide gives the pathway to greener synthesis. The source of Silica that has been chosen is sodium silicate which is very cheap when compared to other silanating ...
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In this study, we have chosen chitosan as capping and stabilizing agent for silica-based hydrogel synthesis. Chitosan, a biomaterial linear polysaccharide gives the pathway to greener synthesis. The source of Silica that has been chosen is sodium silicate which is very cheap when compared to other silanating agent. But the more important feature of these hydrogels is that they shows the similar properties in the qualitative and quantitative analysis. The applications of these nanoparticles are also like another silane reagent. The hydrogel was characterized by UV-Visible, FTIR, XRD, and SEM with EDX analysis. The prepared nanoparticle in presence of acidic medium shows the behavior of hydrogel and they swell in water because of hydrophilicity of water. The hydrogel is applicable in drug loading such as isoniazid.
Devendra S. Raghuvanshi; Jyotsna S. Meshram
Abstract
The green and efficient procedure for the preparation of substituted bis-indolyl methane via condensation of indole with various aryl aldehydes (3 MCR) in the presence of catalytic amount MFA (Modified Fly Ash; a zeotype catalyst) at reflux temperature in good to excellent yield (85-95%) is reported. ...
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The green and efficient procedure for the preparation of substituted bis-indolyl methane via condensation of indole with various aryl aldehydes (3 MCR) in the presence of catalytic amount MFA (Modified Fly Ash; a zeotype catalyst) at reflux temperature in good to excellent yield (85-95%) is reported. This method is utilizing the solvent free condition with the beneficial features such as short reaction time and easy process for isolation. The rate of reactions is found to relay on EDGs and EWGs substituents present on aryl aldehydes at particular positions.
Prashik M. Walke; Jyotsna S. Meshram
Abstract
All Dendrimers are the emerging polymeric architectures known for their defined structure, low polydispersity, nanometric size and high functionality. These nanostructure macromolecules have shown their potential abilities in entrapping and conjugating the high molecular weight hydrophobic or hydrophilic ...
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All Dendrimers are the emerging polymeric architectures known for their defined structure, low polydispersity, nanometric size and high functionality. These nanostructure macromolecules have shown their potential abilities in entrapping and conjugating the high molecular weight hydrophobic or hydrophilic entities by host-guest interaction and covalent bonding respectively. Dendrimer is the irresistible candidature for the formation of inclusion complexes capable of accomplishing the various applications. This is due to the presence of various terminal groups with varied functionalities. PAMAM Dendrimer has been growing interest because of their unique characteristics like globular, nanoscale, macromolecule with different functionalities at periphery. PAMAM is comparatively novel group of these distinctive materials that is grown from the core side and each half or complete generation needs some repeating reactions. Also it has potential applicability in a wide range of areas makes it the promising candidate for lots of applications.Herein, we have synthesized Polyamidoamine (PAMAM) dendrimer of various generations and characterized by Fourier transform infrared (FTIR) spectroscopy and Mass spectrometry. The -0.5G PAMAM has differential functionality and special characteristics which allows the formation of inclusion complexes with various molecules. At this place, the inclusion complexes formed with carbamide molecules, which implant more functionality through host-guest interaction compared to the host molecules
Nandkishor B. Shirsath; Devendra S. Raghuvanshi; Jyotsna S. Meshram
Abstract
Herein, this innovative work; Poly(acrylamide-co-azomethine-co-acrylic acid) cogel is prepared in water as green solvent in order to study the effect of acrylamide content on swelling behaviour of hydrogels. It is found that hydrogels prepared in solution exhibited the highest swelling which probably ...
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Herein, this innovative work; Poly(acrylamide-co-azomethine-co-acrylic acid) cogel is prepared in water as green solvent in order to study the effect of acrylamide content on swelling behaviour of hydrogels. It is found that hydrogels prepared in solution exhibited the highest swelling which probably extend it’s use in agricultural filed as well as in marine industry. The hydrogels is characterized by fourier transform infrared, elemental analysis, differential scanning calorimetry, thermal gravimetric analysis and field emission scanning electron microscopy. From Morphology study, we can see the change in porosity of cogel which is responsible for the absorbance of cogel. The results also indicated that the stability of azomethine is increased by formation of co-gel with poly(acrylamide–co-acrylic acid). In this report, straight forward and efficient synthetic protocol for cogel formation is adopted without any environmental hazard. Swelling capacity of P(AM-co-AA) and cogel was studied by addition of different saline solutions including monovalent, divalent, and trivalent salts. Its applications can be extended in agricultural industries as a basis for super absorbent polymer, waste water treatment, and even in medical field. Hence, the synthesized materials can be biodegradable, environment-friendly, and biocompatible inspired by the green
