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Gelatin photography

The Collodion Processes, Positive and Neua-tive.—Collodion, so named from its adhesive nature, is a gelatinous substance made by dissolving pyroxylin -gun-cotton—in a mixture of ether and alcohol. It is extensively used in photography, as a vehicle for supporting the sensitive chemicals. [Pg.698]

Proteins crosslinked by formaldehyde are important in photography, the leather industry and in bio-medical sciences. Due to the complex structure of the gelatin molecules (consisting of approximately 20 Afferent kinds of amino acids) and the very low crosslink density, it is not possible to detect crosslink resonances under normal conditions. In order to overcome this problem a 13C enriched formaldehyde is used. By comparison with the chemical shifts of model crosslink compounds it is concluded that the predominant crosslink is formed between the lysine and arginine components in gelatin. A possible mechanism for the reaction between these two amino acid components and the formaldehyde has been proposed 154>. [Pg.52]

This recognition of silver as a possible sensitizer predated the introduction of the gelatin emulsion. Eder (91), writing in 1881 several years after gelatin emulsions began to be used in photography, suggested that... [Pg.345]


See other pages where Gelatin photography is mentioned: [Pg.132]    [Pg.7194]    [Pg.132]    [Pg.7194]    [Pg.188]    [Pg.188]    [Pg.311]    [Pg.208]    [Pg.362]    [Pg.15]    [Pg.440]    [Pg.440]    [Pg.441]    [Pg.451]    [Pg.451]    [Pg.457]    [Pg.377]    [Pg.93]    [Pg.468]    [Pg.172]    [Pg.1186]    [Pg.174]    [Pg.58]    [Pg.395]    [Pg.845]    [Pg.96]    [Pg.20]    [Pg.152]    [Pg.165]    [Pg.999]    [Pg.225]    [Pg.604]    [Pg.84]    [Pg.110]    [Pg.254]    [Pg.692]    [Pg.711]    [Pg.363]    [Pg.208]    [Pg.362]    [Pg.377]    [Pg.69]    [Pg.436]    [Pg.1290]    [Pg.1294]    [Pg.1375]    [Pg.146]   


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