Adsorption of Gelatin to Silver Bron1ide

Kragh, A.M.; Peacock, Robert D.

doi:10.1080/00223638.1967.11737411

Cited by 8 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The adsorption isotherms of gelatin on AgBr both above and below the IEP were measured by Kragh and Peacock. 115 Direct surface force measurements between adsorbed gelatin layers on mica at various ionic strengths and solution pH were reported by Kawanishi et al 116 and by Kamiyama and Israelachvili. 117 These studies show that gelatin adsorbs via discrete ionic bonds formed between negative surface groups on mica and positive basic groups on gelatin.…”

Section: Polarization-induced Attraction and Polyampholyte Adsorptionmentioning

confidence: 89%

“…The data on the heat of adsorption by Berendsen and Borginon114 indicated that the binding energy increases at pH values below the IEP and remains roughly constant above the IEP. The adsorption isotherms of gelatin on AgBr both above and below the IEP were measured by Kragh and Peacock 115. Direct surface force measurements between adsorbed gelatin layers on mica at various ionic strengths and solution pH were reported by Kawanishi et al116 and by Kamiyama and Israelachvili 117.…”

Section: Polarization‐induced Attraction and Polyampholyte Adsorptionmentioning

confidence: 99%

See 1 more Smart Citation

Polyampholytes

Dobrynin

Colby

Rubinstein

2004

J Polym Sci B Polym Phys

311

373

View full text Add to dashboard Cite

Polyampholytes are charged polymers with both positively and negatively charged groups. The conformation of these polymers in solutions strongly depends on the distribution of charged monomers along the polymer backbone and their environment. In this review we summarize the current level of understanding of such amphoteric polymers in solutions and their interactions with surfaces and polyelectrolytes. © 2004 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 42: 3513–3538, 2004

show abstract

Section: Polarization-induced Attraction and Polyampholyte Adsorptionmentioning

confidence: 89%

Section: Polarization‐induced Attraction and Polyampholyte Adsorptionmentioning

confidence: 99%

Polyampholytes

Dobrynin

Colby

Rubinstein

2004

J Polym Sci B Polym Phys

311

373

View full text Add to dashboard Cite

show abstract

“…Die auffiillig grofle Steigung des linearen (Henryschen) Bereichs dieser Isothermen beweist die extrem hohe Gesamt-Wechselwirkung zwischen den adsorptiv ak- [6,7]. Vinylchlorid-Latex [8], AgBr-Kristallen [9][10][11][12] und Quarz [13]. …”

Section: Adsorptionunclassified

“…Messungen an den Systemen Gelatinel6-sung und rostfreier Stahl [6,7] bzw. Glas [6] Vinylchlorid-Latex [8], Silberbromid-Kristalle [9][10][11][12] oder Quarz [13] zeigten, daf~ die wesentlichen Affinit~itstrends weitgehend substratunspezifisch sind [7]. Diese Substratunspezifit~it ist nicht nut typisch f/Jr Gelatine, sondern sie wurde auch bei Humanserumalbumin und Polystyrol-Latex beobachtet [14,15].…”

Section: Introductionunclassified

Zur Adsorption von wasserl�slichen Polymeren an harten Oberfl�chen

Haller

Jošt

Schwuger

1983

Colloid & Polymer Sci

View full text Add to dashboard Cite

Zusammenfassung: Die Adsorption yon Gelatine an Chrom-Oberfl~ichen ist in w~i~riger L6sung bei 298 K deutlich pH-Wert-abh~ingig. Bei konstantem pH-Wert entspricht der Verlauf der Isothermen formell dem High-Affinity-Typ. Die gr6f~te S~ittigungskapazit~t und ellipsometrisch bestimmte Schichtdicke ]iegen zwischen den isoelektrischen Punkten der Gelatine (IEPo = 5,1) und der Chromoberfl~iche (IEPcr = 5,6 Abstract: The adsorption of gelatin on chromium-surfaces in aqueous solution at 298 K depends clearly on the pH-value. At constant pH-value the shape of the isotherms formally belong to the high-affinity-type. The largest saturation capacity and the ellipsometrically determined thickness of the layer are found between the isoelectric points of the gelatin (IEP c = 5,1) and of the chromiumsurface 6). Under these conditions the solubility of gelatin in water reaches a minimum and the apparent molecular weight a maximum. The maximal adsorption of gelatin on chromium is based largely on unspecific hydrophobic interactions. Measurements of layer thickness andwetting tension indicate, that the adsorption of gelatin on chromium is not fully reversible. Even after intensive rinsing in pure water there remains a gelatin layer of approximately 3 nm thickness, which graduelly leads to a hydrophobization of the initially hydrophilic chromium surface. This effect is also observed with weakly water soluble natural (albumin, y-globulin, Na-caseinate) and synthetic polymers (PVA, PVP, MHPC, Polypropylenglycol, which various surfaces either hydrophobize or hydrophilize, depending on the original state.

show abstract

“…The theoretical studies of the interaction of polyampholytes with charged surfaces were limited to a single chain problem. 13,14 However, such theory is needed in order to explain the results of numerous experiments [15][16][17][18][19][20][21][22] and to guide the development of new technological applications. In the present note we apply the random phase approximation ͑RPA͒ 12,[23][24][25] to describe the interaction between two identically charged surfaces immersed in polyampholyte solution.…”

Section: Introductionmentioning

confidence: 99%

Polyampholyte solutions between charged surfaces: Debye–Huckel theory

Dobrynin

Rubinstein

Joanny

1998

The Journal of Chemical Physics

View full text Add to dashboard Cite

We calculate the interaction between two identically charged surfaces immersed in a polyampholyte solution in the framework of the linear response approximation. In the case of the randomly charged polyampholyte with equal fractions of positively f ϩ and negatively f Ϫ charged groups the interaction between charged surfaces is similar to that in electrolyte solutions. The screening of the surface potential in the linear response approximation is due to the charge redistribution on the length scales of the polymer coils without the excess of the polymers. In the solution of asymmetric polyampholytes (f ϩ f Ϫ) the charge density fluctuations result in additional attractive interactions linearly proportional to the charge asymmetry.

show abstract

Adsorption of Gelatin to Silver Bron1ide

Cited by 8 publications

References 0 publications

Polyampholytes

Polyampholytes

Zur Adsorption von wasserl�slichen Polymeren an harten Oberfl�chen

Polyampholyte solutions between charged surfaces: Debye–Huckel theory

Contact Info

Product

Resources

About