Cellulose classification

Synonyms CA Triacetate Triacetyl cellulose Classification Thermoplastic Empirical C HwO ... 

Synonyms Carboxymethyiceiiuiose, sodium salt Carboxymethyl ether cellulose sodium salt Carmellose sodium Cellulose carboxymethyl ether sodium salt Cellulose glycolic acid sodium salt Cellulose, polyanlonic Cellulose sodium glyco-late CMC sodium salt NaCMC SCMC Sodium carboxymethyiceiiuiose Sodium cellulose glycolate Sodium CMC Sodium CM-cellulose Classification Synthetic cellulose gum Definition Sodium salt of the polycarboxymethyl ether of cellulose Ionic Nature Anionic Formula [C6H702(0H),(0CH2C00Na)y] ... 

Synonyms Laurdimonium hydroxyethyi cellulose Classification Quaternary ammonium salt... 

Aquifer bioremediation, defined, 3 758t Aquifer flow, 12 842 Aquifers, 12 838-839 Aquifer sparging, defined, 3 758t AraA [9-(P-D-arabinofuranosyl)-9H-purin-6-amine], 4 713 Arabidopsis, molecular genetics of cellulose biosynthesis, 5 366 Arabinanase, 10 300 Arabinans, classification by structure, 4 723t... 

Manual code system, in searching patent literature, 18 223-225 Manual of Classification, 18 209 Manuals of Policies and Procedures (MAPPs), 13 688 Manufactured carbon, 4 735 Manufactured fibers, 11 165, 174-175 24 613-614, 616-618. See also Regenerated fibers Synthetic fibers olefin, 11 231-242 regenerated cellulose, 11 247 Manufactured graphite, 4 735 Manufactured products, nanotechnology and, 17 44-45 Manufactured water, 26 96 Manufacturing... 

ISO 3451-3 1984 Plastics - Determination of ash - Part 3 Unplasticized cellulose acetate ISO 14446 1999 Binders for paints and varnishes - Determination of the viscosity of industrial cellulose nitrate solutions and classification of such solutions ISO/ASTM 51650 2002 Practice for use of cellulose acetate dosimetry system. 

Native or processed cellulose (e.g., cotton, Avicel, filter paper) and its soluble derivatives (e.g., CMC, HEC3) are substrates most often used in the study of cellulases. The classification based on the use of these substrates (l,4-/ -D-glucan cellobiohydrolases (CBH), exo-cellulases, Avicelases and... 

From an examination of a-, / -, and y-cellulose of spruce (the classification of cellulose in a-, / -, and y-variations is described in more detail on p. 230) Ranby arrived at the idea that the a-fraction consisted to thread-like micelles 80 A dia. /3-Cellulose has a similar structure, but with shorter micelles and seems... 

Almost pure cellulose is found in pith, absorbent cotton in some filter papers. Pure cellulose is most readily obtd from cotton by treating it with dil alkalies acids and thoroughly washing, with water. Another source of cellulose is wood(mostly coniferous) which contains 50-60% cellulose and strawfmostly cereal) which contains 30-40%. A common classification of celluloses is based on their solubilities in aq alkalies If cellulose is treated with NaOH soln of ca 18% at 20°, it will swell and much of the material, which is of short chain length, will dissolve. The residue from this treatment is called alpha cellulose. 

Classification by usage or application is the principal system adopted by the Colour Index [5], Because the most important textile fibers are cotton and polyester, the most important dye types are those used for dyeing these two fibers, including polyester-cotton blends (see Chapter 4). Other textile fibers include nylon, polyacrylonitrile, and cellulose acetate. 

Direct or substantive dyes are colored compounds that are mainly used to dye materials made from natural or regenerated cellulose (e.g., cotton, jute, viscose, or paper) without employing mordants as auxiliaries. The essential requirement for classification of a dye in this group is its substantivity, i.e., its absorption from an aqueous salt-containing solution onto cellulosic materials. Absorption onto cotton takes place in a neutral to soda alkaline medium, and onto paper in a weakly acid to neutral medium. 

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