Elastic, Superporous Hydrogel Hybrids of Polyacrylamide and Sodium Alginate

Omidian, Hossein; Rocca, Jose G.; Park, Kinam

doi:10.1002/mabi.200600062

Cited by 98 publications

(60 citation statements)

References 26 publications

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“…The application of PAAm hydrogels in controlled release of agrochemicals and bioactive have been investigated [16,17]. Researchers have been reported porous PAAm hydrogels [18][19][20]. Synthesizing porous hydrogels using solution polymerization method in the presence of porogen (that produce gas bubbles from reaction of porogen with chemicals) is a difficult task, because produced gas bubbles from porogen leave the solution easily.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of porous poly(acrylamide) hydrogels using calcium carbonate and its application for slow release of potassium nitrate

Mahdavinia¹,

Mousavi²,

Karimi³

et al. 2009

Express Polym. Lett.

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Abstract. Porous poly(acrylamide) was synthesized using calcium carbonate microparticles and subsequent acid treatment to remove the calcium carbonate. Methylenebisacrylamide and ammonium persulfate/sodium metabisulfite were used as crosslinking agent and redox initiator, respectively. The porous structure of resulted hydrogels was confirmed using SEM micrographs. The effect of methylenebisacrylamide concentration and calcium carbonate amount on the swelling of the hydrogels was investigated. The results showed that the effect of methylenebisacrylamide and calcium carbonate variables on the swelling is reverse. The hydrogels were subsequently utilized for the loading of potassium nitrate. Potassium nitrate as active agent was loaded into hydrogels and subsequently the release of this active agent was investigated. In these series of investigation, the effect of content of loading, methylenebisacrylamide and calcium carbonate amount on the release of potassium nitrate from hydrogels was investigated.

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Section: Introductionmentioning

confidence: 99%

Synthesis of porous poly(acrylamide) hydrogels using calcium carbonate and its application for slow release of potassium nitrate

Mahdavinia¹,

Mousavi²,

Karimi³

et al. 2009

Express Polym. Lett.

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“…This phenomenon has been exploited to prepare different morphologies and structures for certain applications. Beads [203], films [204,205], hydrogels [206], as well as porous membranes and nanofibers [200] were fabricated for different applications such as wound dressings and metal adsorption. There has been significant interest in the use of alginate in biomedical applications because of its antimicrobial efficiency and structural resemblance to glycosamineglycan (GAG) (one of the significant components of natural extracellular matrices (EMCs) found in mammalian tissues).…”

Section: Alginatementioning

confidence: 99%

A review on electrospun bio-based polymers for water treatment

Mokhena¹,

Jacobs²,

Luyt³

2015

Express Polym. Lett.

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Abstract. Over the past decades, electrospinning of biopolymers down to nanoscale garnered much interest to address most of the millennia issues related to water treatment. The fabrication of these nanostructured membranes added a new dimension to the current nanotechnologies where a wide range of materials can be processed to their nanosize. Electrospinning is a simple and versatile technique to fabricate unique nanostructured membranes with fascinating properties for a wide spectrum of applications such as filtration and others. These nanostructured membranes, fabricated by electrospinning, were found to be of a paramount importance because of their advanced inherited properties such as large surface-to-volume ratio, as well as tuneable porosity, stability, and high permeability. The extensive research conducted on these materials extended the success of electrospinning not only to bio-based polymer nanofibres, but to their hybrids and their derivatives. The technique also created avenues for advanced and massive production of nanofibres. This paper reviews the recent developments in the electrospinning technique. Electrospinning of biopolymers, their blends and functionalization using metals/metal oxides, and the potential applications of electrospun nanofibrous membranes in water filtration are discussed.

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“…Over the years, SPHs have evolved from mechanically weak, first generation SPHs (conventional SPHs), to the mechanically strengthened second generation SPHs (SPH composites), and finally to the third generation SPHs (SPH hybrids) with elastic and rubbery properties in the swollen state [35,36]. Vinyl monomers, including highly hydrophilic acrylamide, salts of acrylic acid, and sulfopropyl acrylate, have been commonly used for the synthesis of first generation SPHs.…”

Section: Superporous Hydrogelsmentioning

confidence: 99%

“…Watersoluble or water-dispersible polymers such as polysaccharides (e.g., sodium alginate), proteins (e.g., chitosan, gelatin), or synthetic hydrophilic polymers (e.g., poly(vinyl alcohol)) have been used as hybrid agents [32,37]. Along these lines, elastic SPH hybrids exhibiting mechanical resilience and a rubbery property in its fully water-swollen state have been recently reported by Park et al [36]. These hydrogel hybrids of acrylamide and alginate could be stretched to about two to three times of their original lengths and could be loaded and unloaded cyclically at least 20 times.…”

Section: Superporous Hydrogelsmentioning

confidence: 99%

Smart polymeric gels: Redefining the limits of biomedical devices

Chaterji

Kwon

Park

2007

Progress in Polymer Science

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560

364

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This review describes recent progresses in the development and applications of smart polymeric gels, especially in the context of biomedical devices. The review has been organized into three separate sections: defining the basis of smart properties in polymeric gels; describing representative stimuli to which these gels respond; and illustrating a sample application area, namely, microfluidics. One of the major limitations in the use of hydrogels in stimuli-responsive applications is the diffusion rate limited transduction of signals. This can be obviated by engineering interconnected pores in the polymer structure to form capillary networks in the matrix and by downscaling the size of hydrogels to significantly decrease diffusion paths. Reducing the lag time in the induction of smart responses can be highly useful in biomedical devices, such as sensors and actuators. This review also describes molecular imprinting techniques to fabricate hydrogels for specific molecular recognition of target analytes. Additionally, it describes the significant advances in bottom-up nanofabrication strategies, involving supramolecular chemistry. Learning to assemble supramolecular structures from nature has led to the rapid prototyping of functional supramolecular devices. In essence, the barriers in the current performance potential of biomedical devices can be lowered or removed by the rapid convergence of interdisciplinary technologies.

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Elastic, Superporous Hydrogel Hybrids of Polyacrylamide and Sodium Alginate

Cited by 98 publications

References 26 publications

Synthesis of porous poly(acrylamide) hydrogels using calcium carbonate and its application for slow release of potassium nitrate

Synthesis of porous poly(acrylamide) hydrogels using calcium carbonate and its application for slow release of potassium nitrate

A review on electrospun bio-based polymers for water treatment

Smart polymeric gels: Redefining the limits of biomedical devices

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