Effect of “glutaraldehyde” functionality on network formation in poly(vinyl alcohol) membranes

Purss, Helen K.; Qiao, Greg G.

doi:10.1002/app.21511

Cited by 31 publications

(19 citation statements)

References 26 publications

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“…Hydrogels can be obtained in various ways. The following methods are most widely employed: chemical cross-linking [7] mostly using glutaraldehyde as the cross-linking agent [8]; cross-linking by γ-radiation [9] [10], by UV radiation [11], and by use of successive freezing/thawing cycles [12] [13]. Intermolecular bonds (mostly hydrogen bonds), which are formed during the freezing/thawing process of PVA water solutions, act as efficient cross-links [14].…”

Section: Introductionmentioning

confidence: 99%

Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing

Gafar¹,

El-Kelany²,

El‐Ahdal³

et al. 2014

OJPChem

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In this study the spectrophotometric response of the Toluidine Blue O (TBO)-gelatin gel dosimeter irradiated with gamma rays was characterized. Preparation of dyed-gelatin gel takes place in neutral medium; to give eventually gel dosimeter has a sharp absorbance peak at 635 nm that bleaches quantitatively upon irradiation and the colour change can be measured with UV-VIS spectrophotometer. The useful dose range was 1 -150 Gy. The radiation chemical yield (G-value) of gel dosimeter was calculated and found to increase by increasing concentration of dye. Post-irradiation storage on the response of gel is discussed. The dose response function, radiation sensitivity, and dependences of the response on environmental factors were studied.

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Section: Introductionmentioning

confidence: 99%

Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing

Gafar¹,

El-Kelany²,

El‐Ahdal³

et al. 2014

OJPChem

View full text Add to dashboard Cite

show abstract

“…The following methods are most widely employed: chemical cross-linking 6 , mostly using glutaraldehyde as the cross-linking agent 7 , crosslinking by γ radiation 8 , by UV radiation 9 , and by use of successive freezing/thawing cycles 10 . Intermolecular bonds (mostly hydrogen bonds), which form during the freezing/thawing process of PVA water solutions, act as efficient cross-links.…”

Section: Introductionmentioning

confidence: 99%

New Polymeric Hydrogel Formulations based on Poly(vinyl alcohol) for the Controlled Release of Bovine Serum Albumin

Hosseinzadeh

2013

Orientjchem.

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Poly(vinyl alcohol) hydrogels have a significant range of mechanical properties based on compositional and processing parameters. Biodegradable hydrogels based on Poly(vinyl alcohol) were prepared for controlled drug delivery of bovine serum albumin. These hydrogels were synthesized by a crosslinking technique using glutaraldehyde as a crosslinker. Hydrogels containing drug were prepared by direct adsorption method. The loading yield was found to depend on both the impregnation time and the amount of encapsulated drug. Glutaraldehyde was utilized as cross-linking agent at different concentration. Increase in the concentration of the cross-linking agent will cause a decrease in the extent of loading of the system.

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“…[27][28][29][30][31] However, due to the cytotoxic nature of glutaradehyde [32][33][34][35] several groups have prepared chemically crosslinked PVA hydrogels utilizing other crosslinkers such as epichlorohydrin, [36] diglycidyls, [37] or by incorporation of polymerizeable functionalities [38][39][40][41][42][43] onto the PVA backbone.…”

Section: Introductionmentioning

confidence: 99%

Poly(vinyl alcohol) Rehydratable Photonic Crystal Sensor Materials

Muscatello

Asher

2008

Adv Funct Materials

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We developed a new photonic crystal hydrogel material based on the biocompatible polymer poly (vinyl alcohol) (PVA), which can be reversibly dehydrated and rehydrated, without the use of additional fillers, while retaining the diffraction and swelling properties of polymerized crystalline colloidal arrays (PCCA). This chemically modified PVA hydrogel photonic crystal efficiently diffracts light from the embedded crystalline colloidal array. This diffraction optically reports on volume changes occurring in the hydrogel by shifts in the wavelength of the diffracted light. We fabricated a pH sensor, which demonstrates a 350 nm wavelength shift between pH values of 3.3 and 8.5. We have also fabricated a Pb(+2) sensor, in which pendant crown ether groups bind lead ions. Immobilization of the ions within the hydrogel increases the osmotic pressure due to the formation of a Donnan potential, swelling the hydrogel and shifting the observed diffraction in proportion to the concentration of bound ions. The sensing responses of rehydrated PVA pH and Pb(+2) sensors were similar to that before drying. This reversibility of rehydration enables storage of these hydrogel photonic crystal sensors in the dry state, which makes them much more useful for commercial applications.

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Effect of “glutaraldehyde” functionality on network formation in poly(vinyl alcohol) membranes

Cited by 31 publications

References 26 publications

Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing

Toluidine Blue O-Gelatin Gel Dosimeter for Radiation Processing

New Polymeric Hydrogel Formulations based on Poly(vinyl alcohol) for the Controlled Release of Bovine Serum Albumin

Poly(vinyl alcohol) Rehydratable Photonic Crystal Sensor Materials

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