studies on water absorbency of polyacrylamide hydrogel
studies on water absorbency of polyacrylamide hydrogel
studies on water absorbency of polyacrylamide hydrogel
studies on water absorbency of polyacrylamide hydrogel
studies on water absorbency of polyacrylamide hydrogel
studies on water absorbency of polyacrylamide hydrogels

Studies on Water Absorbency of Polyacrylamide Hydrogels

Studies on Water Absorbency of Polyacrylamide Hydrogels doi: 10.17265/2161-6221/2015.11-12.001 D DAVID PUBLISHING Studies on Water Absorbency of Polyacrylamide Hydrogels Bhadani Reena1* and Mitra Uttam Kumar2 Department of Chemistry, Ranchi Women¡¯s College, Ranchi University, Ranchi-834001, India

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hydrogel: preparation, characterization, and applications: a

Hydrogel: Preparation, characterization, and applications: A

The ability of hydrogels to absorb water arises from hydrophilic functional groups attached to the polymeric backbone, while their resistance to dissolution arises from cross-links between network chains. Many materials, both naturally occurring and synthetic, fit the definition of hydrogels.

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synthesis of two novel bio-based hydrogels using sodium

Synthesis of two novel bio-based hydrogels using sodium

Among all natural polysaccharides studied for the synthesis of hydrogels, alginate and chitosan have been extensively investigated to prepare carriers with various applications in drug delivery,...

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absorption and adsorption studies of polyacrylamide/sodium

Absorption and adsorption studies of polyacrylamide/sodium

The aim of this study is to investigate the use of hydrogels as adsorbent in the removal of methylene blue (MB), a cationic dyestuff commonly used in industry, by adsorption from waste water.

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fundamental concepts of hydrogels: synthesis, properties,

Fundamental Concepts of Hydrogels: Synthesis, Properties,

The tendency of water absorption in hydrogels is due to the swelling character, which is monitored by the hydrophilicity of attached groups, swelling media, and crosslinked bonding strength. Crosslinking controls water absorption as well as helping in maintaining the network structure in the swollen state [3,4,5,6].

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polyacrylamide hydrogel containing calendula extract as a

Polyacrylamide Hydrogel Containing Calendula Extract as a

Polyacrylamide absorbs water through the formation of hydrogen bonds using osmosis as the mechanism of action. In addition, methylcellulose has hydroxyl groups, which also account for greater water absorption by the hydrogel . The experiment lasted a period of 72 h, and its swelling profile was not constant, which consequently could lead to an

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swelling performance of sodium polyacrylate and poly

Swelling performance of sodium polyacrylate and poly

The swelling performance of the two superabsorbent polymer hydrogels experimentally studied showed a maximum absorbency in the range of 270 to 300g/g. Thermal gravimetric analysis curves show that both superabsorbent polymer hydrogels are stable at high temperatures.

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synthesis and mechanical properties of polyacrylamide gel

Synthesis and Mechanical Properties of Polyacrylamide Gel

buffer solution showed that the hydrogel synthesized by doping GO has high water absorption capacity. Yan et al. [30] prepared a compound double cross-linked hydrogel of gelatin/polyacrylamide/GO/N, N0-methyl-bis-acrylamide. They found that the swelling rate of the hydrogel decreased by about 60%, the yield stress increased by nearly two times,

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preparation and swelling properties of poly(acrylic acid-co

Preparation and swelling properties of poly(acrylic acid-co

For studying the repeated water absorption of the composite hydrogel, an index called the gel water absorption recovery ratio (r) has been introduced in the current study. The water absorption recovery ratio (r) is defined as: r (dried ¡°n¡± times)=water absorptivity after drying ¡°n¡± times/initial water absorptivity.

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polyacrylamide hydrogels. vi. synthesis-property relation

Polyacrylamide hydrogels. VI. Synthesis-property relation

Here we study the synthesis-property relation of polyacrylamide hydrogels prepared by free radical polymerization. Some of the as-prepared hydrogels are further submerged in water to swell either to equilibrium or to a certain polymer content.

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