Celluloid
Encyclopedia
Celluloid is the name of a class of compounds
Chemical compound
A chemical compound is a pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances by chemical reactions. Chemical compounds have a unique and defined chemical structure; they consist of a fixed ratio of atoms that are held together...

 created from nitrocellulose
Nitrocellulose
Nitrocellulose is a highly flammable compound formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it is also known as guncotton...

 and camphor
Camphor
Camphor is a waxy, white or transparent solid with a strong, aromatic odor. It is a terpenoid with the chemical formula C10H16O. It is found in wood of the camphor laurel , a large evergreen tree found in Asia and also of Dryobalanops aromatica, a giant of the Bornean forests...

, plus dyes and other agents. Generally regarded to be the first thermoplastic
Thermoplastic
Thermoplastic, also known as a thermosoftening plastic, is a polymer that turns to a liquid when heated and freezes to a very glassy state when cooled sufficiently...

, it was first created as Parkesine
Parkesine
Parkesine is the trademark for the first man-made plastic. It was patented by Alexander Parkes in 1856. In 1866 Parkes formed the Parkesine Company to mass produce the material. The company, however, failed due to poor product quality as Parkes tried to reduce costs...

in 1862 and as Xylonite in 1869, before being registered as Celluloid in 1870. Celluloid is easily molded
Molding (process)
Molding or moulding is the process of manufacturing by shaping pliable raw material using a rigid frame or model called a pattern....

 and shaped, and it was first widely used as an ivory
Ivory
Ivory is a term for dentine, which constitutes the bulk of the teeth and tusks of animals, when used as a material for art or manufacturing. Ivory has been important since ancient times for making a range of items, from ivory carvings to false teeth, fans, dominoes, joint tubes, piano keys and...

 replacement. Celluloid is highly flammable and also easily decomposes, and is no longer widely used. Its most common uses today are in table tennis balls
Table tennis
Table tennis, also known as ping-pong, is a sport in which two or four players hit a lightweight, hollow ball back and forth using table tennis rackets. The game takes place on a hard table divided by a net...

 and guitar pick
Guitar pick
A guitar pick is a plectrum used for guitars. A pick is generally made of one uniform material; examples include plastic, nylon, rubber, felt, tortoiseshell, wood, metal, glass, and stone...

s.

Nitrocellulose

Nitrocellulose-based plastics slightly predate celluloid. Collodion
Collodion
Collodion is a flammable, syrupy solution of pyroxylin in ether and alcohol. There are two basic types; flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible cellulose film...

, invented in 1848 and used as a wound dressing and an emulsion for photographic plates, is dried to a celluloid-like film.

Alexander Parkes

The first celluloid as a bulk material for forming objects was made in 1855 in Birmingham
Birmingham
Birmingham is a city and metropolitan borough in the West Midlands of England. It is the most populous British city outside the capital London, with a population of 1,036,900 , and lies at the heart of the West Midlands conurbation, the second most populous urban area in the United Kingdom with a...

, England, by Alexander Parkes
Alexander Parkes
Alexander Parkes was a metallurgist and inventor from Birmingham, England. He created Parkesine, the first man-made plastic.-Biography:...

, who was never able to see his invention reach full fruition, after his firm went bankrupt due to scale-up costs. Parkes patented his discovery after realising a solid residue remained after evaporation of the solvent from photographic collodion
Collodion
Collodion is a flammable, syrupy solution of pyroxylin in ether and alcohol. There are two basic types; flexible and non-flexible. The flexible type is often used as a surgical dressing or to hold dressings in place. When painted on the skin, collodion dries to form a flexible cellulose film...

.

Parkes patented it as a clothing waterproof for woven fabrics in the same year. Later in 1862, Parkes showcased Parkesine at the Great Exhibition in London, where he was awarded a bronze medal for his efforts. The introduction of Parkesine is generally regarded as the birth of the plastics industry. Parkes mixed cellulose nitrate with camphor
Camphor
Camphor is a waxy, white or transparent solid with a strong, aromatic odor. It is a terpenoid with the chemical formula C10H16O. It is found in wood of the camphor laurel , a large evergreen tree found in Asia and also of Dryobalanops aromatica, a giant of the Bornean forests...

, producing a hard, flexible, and transparent material. Cellulose nitrate was dissolved in a small measure of solvent, this was then heated and rolled on a purpose-built machine which extracted a proportion of the solvent. Finally, the use of pressure or dyes completed the manufacturing process. In 1866, Parkes tried again with his invention, and he created a company to manufacture and market Parkesine, but this failed in 1868 after trying to cut costs to enable further manufacture.

John Wesley and Isaiah Hyatt

In the 1860s, an American, John Wesley Hyatt
John Wesley Hyatt
John Wesley Hyatt was an American inventor. He is mainly known for simplifying the production of celluloid, the first industrial plastic. Hyatt, a Perkin Medal recipient, is an inductee into the National Inventors Hall of Fame.-Biography:Hyatt was born in Starkey, New York, and began working as a...

, acquired Parkes' patent and began experimenting with cellulose nitrate with the intention of manufacturing billiard ball
Billiard ball
A billiard ball is a small, hard ball used in cue sports, such as carom billiards, pool, and snooker. The number, type, diameter, color, and pattern of the balls differ depending upon the specific game being played...

s, which until that time were made from ivory
Ivory
Ivory is a term for dentine, which constitutes the bulk of the teeth and tusks of animals, when used as a material for art or manufacturing. Ivory has been important since ancient times for making a range of items, from ivory carvings to false teeth, fans, dominoes, joint tubes, piano keys and...

. He used cloth, ivory dust, and shellac
Shellac
Shellac is a resin secreted by the female lac bug, on trees in the forests of India and Thailand. It is processed and sold as dry flakes , which are dissolved in ethyl alcohol to make liquid shellac, which is used as a brush-on colorant, food glaze and wood finish...

, and on April 6, 1869, patented a method of covering billiard balls with the addition of collodion, and formed the Albany Billiard Ball Company in Albany, New York
Albany, New York
Albany is the capital city of the U.S. state of New York, the seat of Albany County, and the central city of New York's Capital District. Roughly north of New York City, Albany sits on the west bank of the Hudson River, about south of its confluence with the Mohawk River...

, to manufacture the product. In 1870, John and his brother Isaiah patented a process of making a "horn-like material" with the inclusion of cellulose nitrate and camphor. Alexander Parkes and Spill listed camphor during their earlier experiments, calling the resultant mix "xylonite", but it was the Hyatt brothers who recognized the value of camphor and its use as a plasticizer for cellulose nitrate. Isaiah Hyatt dubbed his material "celluloid" in 1872.

Daniel Spill and legal disputes

English inventor Daniel Spill
Daniel Spill
Daniel Spill was born in Winterbourne, Gloucestershire, England. He became a rubber and an early thermoplastics manufacturer. For over 20 years Spill had pursued the goal of making a successful business from Alexander Parkes' invention Parkesine, the first man made plastic.-Career:Although he...

 had worked with Parkes and formed the Xylonite Co. to take over Parkes' patents, describing the new plastic products as Xylonite. He took exception to the Hyatts' claims and pursued the brothers in a number of court cases between 1877 and 1884. Initially the judge found in Spill's favour, but ultimately it was judged that neither party held an exclusive claim and the true inventor of celluloid/xylonite was Alexander Parkes, due to his mention of camphor in his earlier experiments and patents. The judge ruled all manufacturing of celluloid could continue both in Spill's British Xylonite Company and Hyatts' Celluloid Manufacturing Company.
The name Celluloid actually began as a trademark
Trademark
A trademark, trade mark, or trade-mark is a distinctive sign or indicator used by an individual, business organization, or other legal entity to identify that the products or services to consumers with which the trademark appears originate from a unique source, and to distinguish its products or...

 of the Celluloid Manufacturing Company, first of Albany, NY, and later of Newark, New Jersey
Newark, New Jersey
Newark is the largest city in the American state of New Jersey, and the seat of Essex County. As of the 2010 United States Census, Newark had a population of 277,140, maintaining its status as the largest municipality in New Jersey. It is the 68th largest city in the U.S...

, which manufactured the celluloids patented by John Wesley Hyatt. Hyatt used heat and pressure to simplify the manufacture of these compounds. Over the years, celluloid has become the normal term used for this type of plastic. In 1878 Hyatt was able to patent a process for injection moulding thermoplastics, although it took another 50 years before it could be realised commercially, and in later years celluloid was later used as the base for photographic film
Photographic film
Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and resolution of the film...

.

Photography

English photographer John Carbutt founded the Keystone Dry Plate Works in 1879 with the intention of producing gelatin dry plates. The Celluloid Manufacturing Company was contracted for this work by means of thinly slicing layers out of celluloid blocks and then removing the slice marks with heated pressure plates. After this, the celluloid strips were coated with a photosensitive gelatin emulsion. It is not certain exactly how long it took for Carbutt to standardize his process, but it occurred no later than 1888. A 15 inches (381 mm) sheet of Carbutt's film was used by William Dickson
William Dickson (film pioneer)
William Kennedy Laurie Dickson was aFrench-born Anglo-Scots inventor who devised an early motion picture camera under the employment of Thomas Edison .-Biography:...

 for the early Edison
Thomas Edison
Thomas Alva Edison was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb. In addition, he created the world’s first industrial...

 motion picture experiments on a cylinder drum Kinetograph. However, the celluloid film base
Film base
A film base is a transparent substrate which acts as a support medium for the photosensitive emulsion that lies atop it. Despite the numerous layers and coatings associated with the emulsion layer, the base generally accounts for the vast majority of the thickness of any given film stock...

 produced by this means was still considered too stiff for the needs of motion picture photography.

By 1889, more flexible celluloids for photographic film
Photographic film
Photographic film is a sheet of plastic coated with an emulsion containing light-sensitive silver halide salts with variable crystal sizes that determine the sensitivity, contrast and resolution of the film...

 were developed, and both Hannibal Goodwin
Hannibal Goodwin
Hannibal Goodwin , was an Episcopal priest at the House of Prayer in Newark, New Jersey, patented a method for making transparent, flexible roll film out of nitrocellulose film base, which was used in Thomas Edison's Kinetoscope, an early machine for viewing animation.-Biography:He was born in...

 and the Eastman Kodak Company obtained patents for a film product (Ansco
Ansco
Ansco was the name of a photographic company based in Binghamton, New York, which produced inexpensive cameras for most of the 20th century. It also sold rebadged versions of cameras made by other manufacturers, including Agfa and Chinon...

, which purchased Goodwin's patent when he died, was eventually successful in an infringement suit against Kodak). This ability to produce photographic images on a flexible material (as opposed to a glass or metal plate) was a crucial step toward the advent of motion pictures.

Uses

Celluloid was extremely useful for creating cheaper jewellery, jewellery boxes, hair accessories and many items that would earlier have been manufactured from ivory, horn or other expensive animal products. It was therefore often referred to as "Ivorine" or "French Ivory". It was also used for dressing table sets, dolls, picture frames, charms, hat pins, buttons, buckles, stringed instrument parts, accordions, cutlery handles and kitchen items. The main disadvantages the material had were that it was flammable and fragile. Items made in celluloid are collectible today and increasingly rare in good condition. It was soon taken over by the more robust Bakelite and Catalin
Catalin
Catalin is a brand name for a thermosetting polymer popular in the 1930s. Developed when the American Catalin Corporation took over the patents for Bakelite in 1927, Catalin is a cast phenolic, which can be worked with files, grinders and cutters and polishes to a fine sheen. Chemically, it is a...

. Celluloid is still being used for decorative borders and inlays on Indian Sitar
Sitar
The 'Tablaman' is a plucked stringed instrument predominantly used in Hindustani classical music, where it has been ubiquitous since the Middle Ages...

s.

Formulation

A typical formulation of celluloid might contain 70 to 80 parts nitrocellulose
Nitrocellulose
Nitrocellulose is a highly flammable compound formed by nitrating cellulose through exposure to nitric acid or another powerful nitrating agent. When used as a propellant or low-order explosive, it is also known as guncotton...

, nitrated to 11% nitrogen
Nitrogen
Nitrogen is a chemical element that has the symbol N, atomic number of 7 and atomic mass 14.00674 u. Elemental nitrogen is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard conditions, constituting 78.08% by volume of Earth's atmosphere...

, 30 parts camphor
Camphor
Camphor is a waxy, white or transparent solid with a strong, aromatic odor. It is a terpenoid with the chemical formula C10H16O. It is found in wood of the camphor laurel , a large evergreen tree found in Asia and also of Dryobalanops aromatica, a giant of the Bornean forests...

, 0 to 14 parts dye
Dye
A dye is a colored substance that has an affinity to the substrate to which it is being applied. The dye is generally applied in an aqueous solution, and requires a mordant to improve the fastness of the dye on the fiber....

, 1 to 5 parts ethyl alcohol
Ethanol
Ethanol, also called ethyl alcohol, pure alcohol, grain alcohol, or drinking alcohol, is a volatile, flammable, colorless liquid. It is a psychoactive drug and one of the oldest recreational drugs. Best known as the type of alcohol found in alcoholic beverages, it is also used in thermometers, as a...

, plus stabilizers and other agents to increase stability and reduce flammability.

External links

  • "Celluloid"
  • "Celluloid" Plastics Historical Society
    Plastics Historical Society
    The Plastics Historical Society was formed in 1986 and aims to encourage the study of all historical aspects of plastics and other polymers, including synthetic fibres, rubber and elastomers. It is an independent society, affiliated to the Institute of Materials, Minerals and Mining and is based...

  • "Collodion"
  • "History of Plastics" Society of the Plastics Industry
    Society of the Plastics Industry
    Founded in 1937, The Society of the Plastics Industry, Inc. is the trade association representing one of the largest manufacturing industries in the United States. SPIs members represent the entire plastics industry supply chain in the US, including processors, machinery and equipment manufacturers...

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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