Swelling behavior of semi‐interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide‐<i>co</i>‐sodium methacrylate)

Mohan, Y. Murali; Murthy, Pushpa S.; Sreeramulu, J.; Raju, K. Mohana

doi:10.1002/app.21849

Cited by 50 publications

(33 citation statements)

References 45 publications

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“…The determination of swelling behaviour of hydrogels in different environments is very important due to their very broad areas of application where hydrogels come in contact with organic or inorganic ionic substances, such as: wound dressing, drugs and protein delivery, artificial tissues, muscles or other organs, separation processes by sorption or diffusion, sensors design etc. [11,12,33,34]. The behaviour of hydrogels with different compositions, in the presence of different ionic substances has been studied [13,18,[23][24][25]32].…”

Section: Introductionmentioning

confidence: 99%

Study of the PVA hydrogel behaviour in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid

Paţachia¹,

Friedrich²,

Florea³

et al. 2011

Express Polym. Lett.

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Abstract. The present paper aims at studying the behaviour of the poly(vinyl alcohol) [PVA] cryogel in the presence of 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM] + [BF 4 ] -) aqueous solutions with various concentrations. The gravimetric method showed that the swollen PVA cryogels exhibit mechanically active behaviour. PVA cryogels showed shrinking in the presence of ionic liquid, (IL), and re-swelling in the presence of distilled water. The re-swelling is not completely reversible, due to the influence of the IL ions on the gel morphology. The Fourier transform infrared (FTIR) spectra have indicated no chemical interaction between the PVA and the studied IL, but highlighted the gel crystallinity change as a function of IL concentration, as well as changes in the bound water amount. Rheological analyses showed dominating plastifying effect of the cation at a lower IL concentration and dominating kosmotropic effect of the anion at a higher IL concentration. A phenomenological kinetic equation that takes into account both fluxes of matters, in and out of the gel, is proposed, explaining the alteration of the gel properties when it comes in contact with BMIMBF 4 solutions.

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Section: Introductionmentioning

confidence: 99%

Study of the PVA hydrogel behaviour in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid

Paţachia¹,

Friedrich²,

Florea³

et al. 2011

Express Polym. Lett.

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“…17,[20][21][22][23] In Fig. 1, a more wide peak at 3000-3500 cm −1 is shown than spectra of AAm/SMA hydrogels.…”

Section: Ft-ir Analysismentioning

confidence: 99%

“…In the FT-IR spectra of the hydrogels, the broad bonds observed between 3600 and 3000 cm −1 correspond to hydrogen bonded O H and N H stretching of AAm/SMA and AAm/SMA/CR units along with CR and MMT repeating units in the polymeric hydrogels. 17,[20][21][22] The bonds at 1600-1700 cm stretching vibration associated with hydrogen that is bonded directly to an overtone of the strong carbonyl absorption. The peaks observed between 1600 and 1700 cm −1 corresponding to the vC O of the methacrylate unit of SMA.…”

Section: Ft-ir Analysismentioning

confidence: 99%

A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

et al. 2014

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ABSTRACT:A series of chemically cross-linked hybrid composite hydrogel systems containing polysaccharide/clay polyelectrolyte based on the acrylamide/sodium methacrylate (AAm/SMA) and ɩ-carrageenan and clay such as montmorillonite were synthesized with free radical solution polymerization by using ammonium persulfate/N,N,N',N'-tetramethylethylenediamine as a redox-initiating pair in the presence of poly(ethylene glycol) diacrylate as a cross-linker. Fourier transform infrared spectroscopy (FT-IR) analysis and scanning electron microscopy (SEM) technique were applied for characterization. The hydrogels, the semi-interpenetrating polymer networks (semi-IPNs), and the hybrid composite hydrogel systems that were synthesized in this study have shown high water absorbency. Some swelling and diffusion properties were calculated, and they were discussed for the hybrid hydrogel systems prepared under various formulations. They were used in experiments on sorption of water-soluble cationic dye such as Safranin T (ST). The sorption of ST into the polymeric systems was studied by a batch sorption technique at 25°C. For equilibrium sorption studies, dye removal capacity, adsorption percentage, and partition coefficient of the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems are investigated. Consequently, the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems developed in this study could serve as a potential device for water and dye sorbents. Some materials such as the hydrogels, the semi-IPNs, and the hybrid composite hydrogel systems developed in this study with the ability to absorb water in high amounts could be used as a water and dye sorbents because of their potential applications in agriculture, environment, separation processes, and water purification. C

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“…These water molecules are nonfreezing. [5] The amount of water absorption in different types of hydrogel is varied Quantity and speed of water absorption is dependent on the following factors: i) cross-linking density, ii) chemical structure of the polymers and iii) environmental conditions.…”

Section: Hydrogelsmentioning

confidence: 99%

Preparation of Chitosan Hydrogels and Its Pharmaceutical Drug Delivery

Salvador¹

2017

WJPPS

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A considerable amount of work has been published on chitosan and its potential use in drug delivery systems. Chitosan has a cationic character because of its primary amino groups. These primary amino groups are responsible for properties such as controlled drug release, mucoadhesion, in situ gellation, transfection, permeation enhancement and efflux pump inhibitory properties. Due to chemical modifications, most of these properties can even be further improved. Chitosan Hydrogel has been recently developed serve as semi synthetic or synthetic extra cellular matrix to provide an amenable environment for cellular adherence and cellular remodeling in three dimensional structures mimicking that of natural cellular environment. Additionally, hydrogels have the capacity to carry small molecule drugs and/or proteins, growth factors and other necessary components for cell growth and differentiation. In the context of drug delivery, hydrogels can be utilized to localize drugs, increase drugs concentration at the site of action and consequently reduce off-targeted side effects. This review classifies hydrogels and their method of preparation.

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Swelling behavior of semi‐interpenetrating polymer network hydrogels composed of poly(vinyl alcohol) and poly(acrylamide‐co‐sodium methacrylate)

Cited by 50 publications

References 45 publications

Study of the PVA hydrogel behaviour in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid

Study of the PVA hydrogel behaviour in 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid

A Study of Polymer/Clay Hybrid Composite Sorbent‐Based AAm/SMA Hydrogels and Semi‐IPNs Composed of ɩ‐Carrageenan and Montmorillonite for Water and Dye Sorption

Preparation of Chitosan Hydrogels and Its Pharmaceutical Drug Delivery

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