Preparation, characterization, and water‐sorption study of polyvinyl alcohol based hydrogels with grafted hydrophilic and hydrophobic segments

Shukla, Sandeep K.; Bajpai, Anjali; Kulkarni, R. A.

doi:10.1002/app.21344

Cited by 29 publications

(22 citation statements)

References 40 publications

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“…There were two aims in doing this: first, to compare the level of hydrophilicity of the layer both before and after the AA monomer has been completely polymerized [38]. If PA preferentially attracts water, greater swelling would take place in exposed areas.…”

Section: Experimental Methods To Find Dmentioning

confidence: 99%

Monomer diffusion rates in photopolymer material Part II High-frequency gratings and bulk diffusion

Gleeson

Mooney

et al. 2011

J. Opt. Soc. Am. B

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Photosensitive polymers are of practical importance, and mass transport within such materials plays a critical role in their behavior. Building on the work in Part I [J. Opt. Soc. Am. B doc. ID 136413 (posted 5 January 2011, in press)], the diffusion constants of a number of materials (i.e., acrylamide, polyacrylamide, water, propanol, and acetone) within a photosensitive layer are measured. A combination of optical and physical chemistry techniques is applied under different conditions. Determining the rates of diffusion is beneficial as it: (i) indicates material stability over time and (ii) supports material characterization, modeling, and performance optimization.

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Section: Experimental Methods To Find Dmentioning

confidence: 99%

Monomer diffusion rates in photopolymer material Part II High-frequency gratings and bulk diffusion

Gleeson

Mooney

et al. 2011

J. Opt. Soc. Am. B

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“…[1][2][3] Hydrogels have been suggested for numerous applications, such as controlled delivery of drugs, 4 artificial articular cartilage 5 or vessels, 6 contact lenses, 7 wound dressings, 8,9 and many other devices. Suitability of a hydrogel for a particular application often depends on the structural and mechanical characteristics of the biomaterial.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and microstructural properties of hybrid poly(ethylene glycol)–soy protein hydrogels for wound dressing applications

Snyders

Shingel²,

Zabeida

et al. 2007

J Biomedical Materials Res

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Biomimetic hydrogel made of poly(ethylene glycol) and soy protein with a water content of 96% has been developed for moist wound dressing applications. In this study, such hybrid hydrogels were investigated by both tensile and unconfined compression measurements in order to understand the relationships between structural parameters of the network, its mechanical properties and protein absorption in vitro. Elastic moduli were found to vary from 1 to 17 kPa depending on the composition, while the Poisson's ratio (approximately 0.18) and deformation at break (approximately 300%) showed no dependence on this parameter. Further calculations yielded the crosslinking concentration, the average molecular weight between crosslinks (M(C)) and the mesh size. The results show that reactions between PEG and protein create polymeric chains comprising molecules of PEG and protein fragments between crosslinks. M(C) is three times higher than that expected for a "theoretical network." On the basis of this data, we propose a model for the 3D network of the hydrogel, which is found to be useful for understanding drug release properties and biomedical potential of the studied material.

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“…PVA has been well known for its excellent film-forming property, emulsifying property, and minimal cell and protein adhesion property. 18,19 PVA is also resistant to oil and solvent. PEG showed extraordinary antifouling property to protein adsorption because of its hydrophilicity, flexible long chains, large exclusion volume, and unique coordination with surrounding water molecules in an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

The effect of polymer surface modification via interfacial polymerization on polymer–protein interaction

Liu

Kim

et al. 2009

J of Applied Polymer Sci

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Membrane separation is an important processing technology used for separating food ingredients and fractionating value-added components from food processing byproducts. Long-term performance of polymeric membranes in food protein processing is impeded by the formation of fouled layers on the membrane surface as a result of protein adsorption onto the membrane surface. Surface modification of synthetic membranes, i.e., changing surface characteristics to reduce protein adsorption permanently, is one of the innovative ways of reducing the fouling of membrane surfaces. In this study, surface modification of flat-sheet ultrafiltration membrane, polyethersulfone (PES), was investigated in improving the hydrophilicity of PES surfaces, thereby reducing adsorption of the protein caused by hydrophobic-hydrophobic interaction between the protein and the membrane. Hydrophilic polymer grafting through thinfilm composite using interfacial polymerization was employed to improve the hydrophilicity of the commercial PES membranes. Poly(vinyl alcohol), poly(ethylene glycol), and chitosan were chosen as hydrophilic polymers to graft on PES membrane because of their excellent hydrophilic property. Modified PES membranes were characterized by contact angle, FTIR, XPS, and AFM. Contact angles of modified PES membranes were reduced by 25 to 40% of that of the virgin PES membrane. XPS spectrum supported that the PES membranes were successfully modified by interfacial polymerization. Tapping-mode AFM was used to examine the changes in surface topography of modified PES membranes. The PES membranes modified by interfacial polymerization showed lower roughness (from 1.2 to 2.0 nm) than that of virgin PES membrane (2.1 nm). The results of these instrumental analyses indicated that the PES membranes were successfully enhanced hydrophilically through interfacial polymerization. The protein adsorption on the modified membranes was reduced by 30 to 35% as a result of surface modification of the PES membranes using interfacial polymerization technique.

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Preparation, characterization, and water‐sorption study of polyvinyl alcohol based hydrogels with grafted hydrophilic and hydrophobic segments

Cited by 29 publications

References 40 publications

Monomer diffusion rates in photopolymer material Part II High-frequency gratings and bulk diffusion

Monomer diffusion rates in photopolymer material Part II High-frequency gratings and bulk diffusion

Mechanical and microstructural properties of hybrid poly(ethylene glycol)–soy protein hydrogels for wound dressing applications

The effect of polymer surface modification via interfacial polymerization on polymer–protein interaction

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