Flax

There are many reasons why animal, vegetable, or mineral oils are associated with fibre products  

Under appropriate circumstances the oils associated with fibres undergo oxidation and other reactions in the presence of air or through self-oxidation as they dry. These reactions can generate sufficient heat to cause the fibres (many of which are made of combustible materials and all of which have high relative surface area on which reactions can proceed) to reach the point of spontaneous combustion (linters present a particular risk of spontaneous 

Fabrics impregnated with weakly nitrated nitrocellulose, n.o.s. (including toe puffs, nitrocellulose base), see Nitrocellulose Products, p.l61 

Fibres impregnated with weakly nitrated nitrocellulose, n.o.s., see Nitrocellulose 

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Linamarin, acetonecyanhydrin, -D>gluco-pyranoside, CeH, 0j 0 C CH3)2 CN. M.p. I43-I45°C. Present in young flax plants and in Phaseolus lunatus and is also the glycoside of rubber seeds. Such glycosides may be regarded as primary materials for synthesis. 

Flavor transport Flavylium cation Flaws Flax... 

Soybean meal is the most frequently used source of supplemental protein in the United States (5). Cottonseed meal is another important protein supplement. Both meals are by-products from oil extraction of the seeds. Canola meal is derived from rapeseed low in emcic acid [112-86-7] and glucosinolates. Linseed (derived from flax seed), peanut, sunflower, safflower, sesame, coconut, and palm kernel meals are other sources of supplemental protein that are by-products of oil extraction (4). 

Property Cotton Flax Hemp lute Ramie Polyester... 

The microfibrils iu vegetable fibers are spiral and parallel to one another iu the cell wall. The spiral angles iu flax, hemp, ramie, and other bast fibers are lower than cotton, which accounts for the low extensibiUty of bast fibers. 

The flax fiber from the aimual plant IJnum usitatissimum (flax family, Liuaceae) has been used siuce ancient times as the fiber for linen. The plant grows iu temperate, moderately moist climates, for example, iu Belgium, France, Ireland, Italy, and Russia. The plant is also cultivated for its seed, from which linseed oil is produced. A by-product of the seed plant is the tow fiber used iu papermakiug. 

A cross-sectional view of hemp fiber is shown in Figure 3b. It has a Z twist in contrast to the S twist of flax. Hemp is regarded as a substitute for flax in yam and twine. Its eadier use in ropes has been replaced by leaf and synthetic fibers. Hemp fiber is used in Japan, China, CIS, and Italy to make specialty papers, including cigarette paper, but bleaching is difficult. The fiber is coarser and has less flexibiUty than flax. 

Phormium. The Phormium tenax plant yields a long, light-colored, hard fiber also known as New Zealand hemp or flax, although it has none of the bast fiber characteristics. The plant is a perennial of the Agavaceae with leaves up to 4 m long and 10 cm wide. The fibers are recovered by mechanical decortication. 

Uses Abaca Cantala Henequen Sisal Flax Hemp jute Kenaf Ramie Suim Kapok Coir... 

Fibers (see Fibers, survey) used in textile production can have a wide variety of origins plants, ie, ceUulosic fibers (see Fibers, cellulose esters) animals, ie, protein fibers (see Wool) and, in the twentieth century, synthetic polymers. Depending on the part of the plant, the ceUulosic fibers can be classified as seed fibers, eg, cotton (qv), kapok bast fibers, eg, linen from flax, hemp, jute and leaf fibers, eg, agave. Protein fibers include wool and hair fibers from a large variety of mammals, eg, sheep, goats, camels, rabbits, etc, and the cocoon material of insect larvae (sUk). Real sUk is derived from the cocoon of the silkworm, Bombjx mori and for a long time was only produced in China, from which it was traded widely as a highly valuable material. 

Goumanns. By treatment of flax with escuUn, a glucoside of esculetin [305-01-1] (10), a brightening effect is achieved however, this effect is not fast to washing and light. The use of P-methylumbeUiferone [90-33-5] (11) and similar compounds as brighteners for textiles and soap has been patented. 

Dimethipin. 2,3-Dihydro-5,6-dimethyl-l,4-dithiin-l,l,4,4-tetraoxide [55290-64-7] (dimethipin, oxidimetbiin, UBI-N252, Harvard) (25) is used as a cotton defoHant and has been used as an experimental desiccant in potato vines. In addition, it defoHates nursery stock, grapes, dry beans, and natural mbber and is used as a desiccant for seed of canola, flax (l lnum usitatlssimum), rice, and sunflower (He/lanthus annuus) (10). The product has been available since the mid-1970s and the experimental work was first reported in 1974 (44). 

Although most seeds contain starch as the principal food reserve, many contain other polysaccharides and some have industrial utility. The first seed gums used commercially were quince, psyUium, flax, and locust bean gum. However, only locust bean gum is stiU used, particularly in food appHcations quince and psyllium gums are only used in specialized appHcations. 

Refs. 32-37. Includes copra, cottonseed, com germ, peanuts, flax, safflower, sunflower, sesame, palm kernels, and linseed. ... 

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