collodion


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collodion

(kəlō`dēən), solution of pyroxylinpyroxylin
, partially nitrated cellulose (see nitrocellulose). It is used in lacquers, plastics, and artificial leathers. Pyroxylin lacquers are made by dissolving pyroxylin in a mixture of volatile solvents and adding a plasticizer and a pigment or dye.
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 in a mixture of alcohol and ether. Upon exposure to air, the solvents evaporate, leaving a thin, colorless, elastic film on any surface upon which the collodion has been spread. Collodion is the forerunner of the lacquer paints that are now widely used in the automobile industry.

Collodion

 

an alcoholether solution of nitrocellulose; a colorless, transparent, or slightly yellowish liquid with the odor of ether. When applied to the skin, collodion congeals, forming a thin, tough film. It is used to secure surgical bandages and to coat small wounds and abrasions.

collodion

[kə′lōd·ē·ən]
(organic chemistry)
Cellulose nitrate deposited from a solution of 60% ether and 40% alcohol, used for making fibers and film and in membranes for dialysis.
References in periodicals archive ?
Needless to say, having embraced the wet collodion process and with a clearer idea of his plan, the RNLI gave Jack its blessing for his monumental project and he headed off, almost exactly a year ago, to Southwold, in Suffolk, reasoning that in the depths of winter there was more chance of good weather on the east coast.
Sent there on assignment for the New York Times Magazine, Mann hauled her cameras and wet plate collodion darkroom to Knoxville and set about photographing bodies in various stages of decay.
Civil War photographers made wide use of the glass plate negative and tintype processes--the latter of which employed wet collodion on thin sheets of metal rather than glass.
To closely monitor the reaction process, a drop of dispersion was dispensed on a copper grid coated with a collodion.
Pannu, Head, Department of Paediatrics, Guru Nanak Dev Medical College and Hospital said that a collodion baby was brought to the hospital for treatment on Friday.
For the past six months, Jonathan has been teaching vintage photo equipment supplier Paul Cordes, from North Shields, how to create collodion images.
1868: John Wesley Hyatt invented celluloid (cellulose nitrate) from cellulose and alcoholised camphor after spilling collodion and finding it developed into a hard and flexible film upon drying.
Frustrated by the ease at which digital photos can be taken and doctored, some artists are kicking it old school: They've revived wet plate collodion photography, a medium invented and popular during the mid-1800s.
Chapters cover chemical safety, materials and techniques, digital negaitves, fugitive (non-fixed and semi-fixed) printing, cyanotypes, salt and albumen prints, Van Dyke brown/kallitype/argyrotypes, platinum and palladium prints, wet plate collodion, liquid emulsion, gum printing, transfers and other ideas, and printing on ceramics.
4 Diagnosis of LI is based on the history of collodion membrane at birth and the characteristic appearance of scales, especially on the shins.
The Rise of Photography 1850-1880: The Age of Collodion.