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1 Cellulose
Cellulose is a constituent of all vegetable matter - cotton, trees, grass, sugar-cane, leaves, etc. It is found in the highest degree of purity in the cotton fibre, and for this reason cotton has played a leading part in the development and rapid growth of the celluloid, rayon and other products. Long staple cotton was used at first, but later on linters were found to produce a very pure cellulose. -
2 длинноволокнистая целлюлоза
Русско-английский политехнический словарь > длинноволокнистая целлюлоза
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3 целлюлоза
* * *целлюло́за ж.1. ( клетчатка) cellulose2. ( целлюлозная масса) cellulose pulpобезво́живать целлюло́зу — dewater (the) celluloseобесцве́чивать целлюло́зу — decolorize (the) celluloseоблагора́живать целлюло́зу — refine (the) celluloseотбе́ливать целлюло́зу — bleach (the) celluloseочища́ть целлюло́зу — purify (the) celluloseпроце́живать целлюло́зу — strain (the) celluloseформова́ть целлюло́зу в полотно́ — form (the) cellulose into a continuous sheetвиско́зная целлюло́за — rayon [viscose] celluloseдлинноволокни́стая целлюло́за — long-fibre celluloseцеллюло́за для хими́ческого произво́дства — chemical celluloseдреве́сная целлюло́за — wood celluloseдреве́сная целлюло́за для произво́дства бума́ги ( бумажная масса) — woodpulpкормова́я целлюло́за — fodder celluloseкоротковолокни́стая целлюло́за — short-fibred celluloseсульфа́тная целлюло́за — sulphate celluloseсульфи́тная целлюло́за — sulphite celluloseтова́рная целлюло́за — market [commercial] celluloseхло́пковая целлюло́за — cotton [linters] pulp, cotton lintersщелочна́я целлюло́за — alkali(ne) [sodium] cellulose -
4 целлюлоза
1. ж. cellulose2. ж. cellulose pulp -
5 длинноволокнистый
1. long-fibered2. long-fibred -
6 Cross, Charles Frederick
[br]b. 11 December 1855 Brentwood, Middlesex, Englandd. 15 April 1935 Hove, England[br]English chemist who contributed to the development of viscose rayon from cellulose.[br]Cross was educated at the universities of London, Zurich and Manchester. It was at Owens College, Manchester, that Cross first met E.J. Bevan and where these two first worked together on the nature of cellulose. After gaining some industrial experience, Cross joined Bevan to set up a partnership in London as analytical and consulting chemists, specializing in the chemistry and technology of cellulose and lignin. They were at the Jodrell laboratory, Kew Gardens, for a time and then set up their own laboratory at Station Avenue, Kew Gardens. In 1888, the first edition of their joint publication A Textbook of Paper-making, appeared. It went into several editions and became the standard reference and textbook on the subject. The long introductory chapter is a discourse on cellulose.In 1892, Cross, Bevan and Clayton Beadle took out their historic patent on the solution and regeneration of cellulose. The modern artificial-fibre industry stems from this patent. They made their discovery at New Court, Carey Street, London: wood-pulp (or another cheap form of cellulose) was dissolved in a mixture of carbon disulphide and aqueous alkali to produce sodium xanthate. After maturing, it was squirted through fine holes into dilute acid, which set the liquid to give spinnable fibres of "viscose". However, it was many years before the process became a commercial operation, partly because the use of a natural raw material such as wood involved variations in chemical content and each batch might react differently. At first it was thought that viscose might be suitable for incandescent lamp filaments, and C.H.Stearn, a collaborator with Cross, continued to investigate this possibility, but the sheen on the fibres suggested that viscose might be made into artificial silk. The original Viscose Spinning Syndicate was formed in 1894 and a place was rented at Erith in Kent. However, it was not until some skeins of artificial silk (a term to which Cross himself objected) were displayed in Paris that textile manufacturers began to take an interest in it. It was then that Courtaulds decided to investigate this new fibre, although it was not until 1904 that they bought the English patents and developed the first artificial silk that was later called "rayon". Cross was also concerned with the development of viscose films and of cellulose acetate, which became a rival to rayon in the form of "Celanese". He retained his interest in the paper industry and in publishing, in 1895 again collaborating with Bevan and publishing a book on Cellulose and other technical articles. He was a cultured man and a good musician. He was elected a Fellow of the Royal Society in 1917.[br]Principal Honours and DistinctionsFRS 1917.Bibliography1888, with E.J.Bevan, A Text-book of Papermaking. 1892, British patent no. 8,700 (cellulose).Further ReadingObituary Notices of the Royal Society, 1935, London. Obituary, 1935, Journal of the Chemical Society 1,337. Chambers Concise Dictionary of Scientists, 1989, Cambridge.Edwin J.Beer, 1962–3, "The birth of viscose rayon", Transactions of the Newcomen Society 35 (an account of the problems of developing viscose rayon; Beer worked under Cross in the Kew laboratories).C.Singer (ed.), 1978, A History of Technology, Vol. VI, Oxford: Clarendon Press.RLHBiographical history of technology > Cross, Charles Frederick
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7 Bevan, Edward John
[br]b. 11 December 1856 Birkenhead, Englandd. 17 October 1921 London, England[br]English co-inventor of the " viscose rayon " process for making artificial silk.[br]Bevan began his working life as a chemist in a soap works at Runcorn, but later studied chemistry at Owens College, Manchester. It was there that he met and formed a friendship with C.F. Cross, with whom he started to work on cellulose. Bevan moved to a paper mill in Scotland but then went south to London, where he and Cross set up a partnership in 1885 as consulting and analytical chemists. Their work was mainly concerned with the industrial utilization of cellulose, and with the problems of the paper and jute industries. Their joint publication, A Text-book of Paper-making, which first appeared in 1888 and went into several editions, became the standard reference and textbook on the subject. The book has a long introductory chapter on cellulose.In 1892 Cross, Bevan and Clayton Beadle discovered viscose, or sodium cellulose xanthate, and took out the patent which was to be the foundation of the "viscose rayon" industry. They had their own laboratory at Station Avenue, Kew Gardens, where they carried out much work that eventually resulted in viscose: cellulose, usually in the form of wood pulp, was treated first with caustic soda and then with carbon disulphide to form the xanthate, which was then dissolved in a solution of dilute caustic soda to produce a viscous liquid. After being aged, the viscose was extruded through fine holes in a spinneret and coagulated in a dilute acid to regenerate the cellulose as spinnable fibres. At first there was no suggestion of spinning it into fibre, but the hope was to use it for filaments in incandescent electric light bulbs. The sheen on the fibres suggested their possible use in textiles and the term "artificial silk" was later introduced. Cross and Bevan also discovered the acetate "Celanese", which was cellulose triacetate dissolved in acetone and spun in air, but both inventions needed much development before they could be produced commercially.In 1892 Bevan turned from cellulose to food and drugs and left the partnership to become Public Analyst to Middlesex County Council, a post he held until his death, although in 1895 he and Cross published their important work Cellulose. He was prominent in the affairs of the Society of Public Analysts and became one of its officials.[br]Bibliography1888, with C.F.Cross, A Text-book of Papermaking.1892, with C.F.Cross and C.Beadle, British patent no. 8,700 (viscose). 1895, with C.F.Cross, Cellulose.Further ReadingObituary, 1921, Journal of the Chemical Society.Obituary, 1921, Journal of the Society of Chemical Industry.Edwin J.Beer, 1962–3, "The birth of viscose rayon", Transactions of the Newcomen Society 35 (an account of the problems of developing viscose rayon; Beer worked under Cross in the Kew laboratories).RLH -
8 Flax
The following terms as given under the authority of the Ministry of Supply, are reprinted here with their permission. Flax Plants - of the species Linum usitatissimum cultivated for the production of seed or fibre or both. Flax, Fibre (Fibre Flax) - The variety of flax cultivated mainly for fibre production. Flax, fibre strands, or bundles - The aggregates, about 32 in number, of ultimate fibres which run from the level of the seed leaves up to the top of the branches of the flax straw. They are each composed of large numbers of ultimate fibres overlapping each other. Flax Fibres, Ultimate - The component cellulose fibres, about 11/4-in. long by 1/1000-in. wide, making up the fibre system of the flax straw. Flax, Linseed - The variety of flax cultivated mainly for seed production. Flax Seed - The term usually applied to the seed of fibre flax. A bag of flax seed in Ireland is sometimes 31/2 bushels, but it is more usual now to put up seed in 1-cwt. bags as in England. A peck of flax seed weighs approximately 14-lb. Flax Seed, Blue Blossom - Seed of a blue-flowered variety of flax. Flax Seed, Commercial - Flax seed usually named after its country or place of origin, but without a pedigree and without guarantee as to colour of flower. Flax Seed Germination - That percentage by number of a sample of seed which shows visible signs of growth within a stated time when kept under standard conditions of temperature and moisture. Flax Seed Germination, Standard - An arbitrary standard of germination of 90 per cent or more, incorporated in the flax growers' contract of the Ministry of Supply. Flax Seed, Lital - The generic name given to pedigree flax seed of several strains bred by the Linen Industry Research Association, Lambeg, and derived from those initials. Flax Seed, Minty - Seed which has been attacked by species of mites, usually owing to it being cracked and too damp. It is characterised by a dusty appearance and a distinct musty sweet smell. Flax Seed, Mixed Blue Blossom - A term used in Northern Ireland for seed from two or more blue-blossomed pedigree flaxes mixed together. Flax Seed, Pedigree - Seed of a strain of flax which has been improved by some recognised system of flax breeding and originally derived from the bulking of the seed from a single flax plant. Flax Seed, Plimmed - A local term for seed which has swollen through excess of moisture. Flax Seed Purity - That percentage by weight of seed taken from bulk which consists of whole flax seeds. Flax Seed Purity, Standard - An arbitrary standard of purity of 96 per cent or more with a weed seed content of 0.25 per cent or less, incorporated in the flax growers' contract of the Ministry of Supply. Flax Seed, Sowing - Seed of a germination and, purity making it acceptable for sowing. Flax Seed, Stormont - The generic name given to pedigree flax seed produced by the Plant Breeding Division, Ministry of Agriculture, Northern Ireland. Flax Seed, Weight per 1,000 - The weight in grams of 1,000 flax seeds picked at random from a sample. It is used as a measure of the plumpness and general quality of seed. Flax Seed, White Blossom - Seed of a white-flowered variety of flax. Flax Variety, Cross breeding - A method of flax breeding, based on fertilising the seed of a single plant of one strain by the pollen of a single plant of another strain and the study of the progeny. Flax Variety, Single Plant Selection - A method of flax breeding based on the study of a single self-fertilised flax plant and its progeny in subsequent generations. Linseed - The seed of linseed flax: and also of fibre flax when it is used for the same purposes as linseed. Moisture Content - To conform with the International ruling for seed testing the moisture content of flax seed should be expressed as a percentage of the original weight; the moisture content of other flax products being expressed as a percentage of the dry weight. Nomersan - A proprietary powder for dusting on flax seed as a prevention of certain seed-bome fungal diseases. Pickle - The term often applied to a single flax seed, i.e., a sample of seed is said to he of a large pickle or a small pickle. Weed Seed - The seed of any other species of plant present in a sample of flax seed.
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