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Alpha cellulose

Alpha-cellulose Alpha-cellulose, also known as chemical cellulose, is a highly refined, insoluble cellulose from which all sugars, pectin, lignin, and other soluble materials have been removed. It is commonly used in the production of nitrocellulose, carboxymethylcellu-lose, dissolving pulps, and other compounds. [Pg.444]

Alpha Cellulose. Alpha cellulose is obtained after treatment of the holocellulose with 17.5% NaOH see ASTM Standard D 1103). This procedure removes most, but not all, of the hemicelluloses. [Pg.71]

ASTM or UL test Property Alpha-cellulose Alpha-cellulose Macerated fabric Glass fiber... [Pg.327]

Cellulose Alpha-naphthol/H2S04 Reddish violet Hydroxy 10... [Pg.140]

Cellulose + alpha pulp + Copper II sulfate + ammonia... [Pg.62]

Properties Thermoplastic elastomers Urea formaldehyde, alpha-cellulose filled Vinyl ... [Pg.1058]

The AC may react with methyl chloride or alpha-chloroacetic acid via a direct displacement reaction (eq. 2). The derivatives would be methyl cellulose or carboxymethyl cellulose. [Pg.314]

Fig. 1. Primary stmctures of some common polysaccharides, (a) Alpha-glycoside linkages characterize amylose, amylopectin, and glycogen (b) cellulose has... Fig. 1. Primary stmctures of some common polysaccharides, (a) Alpha-glycoside linkages characterize amylose, amylopectin, and glycogen (b) cellulose has...
R wPrior to World War II, CN was produced mainly from cotton linters because of their higher degree of purity (alpha cellulose >98%). The high purity linters allowed a higher yield and better quaUty product compared to those obtained from less pure wood pulps or other cellulose sources. The development of highly purified chemical-grade wood pulps has allowed this material to be used in the same manner as are linters. [Pg.266]

Alternatively cellulose is produced from wood via wood pulp. A number of processes are used in which the overall effect is the removal of the bulk of the non-cellulosic matter. The most widely used are the sulphite process, which uses a solution of calcium bisulphite and sulphur dioxide, the soda process using sodium hydroxide and the sulphate process using a solution of sodium hydroxide and sodium sulphide. (The term sulphate process is used since sodium sulphate is the source of the sulphide.) For chemical purposes the sulphite process is most commonly used. As normally prepared these pulps contain about 88-90% alpha-cellulose but this may be increased by alkaline purification and bleaching. [Pg.613]

Alpha-gras, n. alfa grass, esparto, -milchsaure, /. (,o -)lactic acid, -naphtol, n. alpha naphthol, a-naphthol (l-naphthol). -strahlen, m.pl. alpha rays, -zellstoff, m. alpha cellulose. Alpranken, f.pl. bittersweet (Solanum dulcamara). [Pg.19]

Starting from a collection of samples remarkably well resolved (alpha > 6) on Chiralcel OD (Cellulose tris(3,5-dimethylphenylcarbamate) coated on aminopropyl silica), a putative three-point enantiophore for binding to CSR was derived (Fig. 4-10). This enantiophore query was used to search (CFS 3D search) within a list comprising 4203 compounds tested on Chiralcel OD. From this search domain of CHIRBASE 3D, 191 structures were found to match the enantiophore. [Pg.110]

Block copolymers of styrene and butadiene or styrene and isoprene Block copolymers of styrene and ethylene or styrene and butylene Urea formaldehyde, alpha-cellulose filled Poly(vinyl chloride) and poly(vinyl acetate) ... [Pg.1327]

Description Percent alpha cellulose Percent accessibility... [Pg.126]

See other pages where Alpha cellulose is mentioned: [Pg.524]    [Pg.524]    [Pg.93]    [Pg.140]    [Pg.280]    [Pg.400]    [Pg.575]    [Pg.440]    [Pg.59]    [Pg.43]    [Pg.627]    [Pg.30]    [Pg.524]    [Pg.524]    [Pg.93]    [Pg.140]    [Pg.280]    [Pg.400]    [Pg.575]    [Pg.440]    [Pg.59]    [Pg.43]    [Pg.627]    [Pg.30]    [Pg.1059]    [Pg.313]    [Pg.314]    [Pg.314]    [Pg.294]    [Pg.423]    [Pg.532]    [Pg.326]    [Pg.483]    [Pg.613]    [Pg.675]    [Pg.121]    [Pg.620]    [Pg.349]    [Pg.95]    [Pg.207]    [Pg.169]    [Pg.36]    [Pg.287]   
See also in sourсe #XX -- [ Pg.192 ]

See also in sourсe #XX -- [ Pg.12 , Pg.290 ]

See also in sourсe #XX -- [ Pg.192 ]

See also in sourсe #XX -- [ Pg.140 ]



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Alpha cellulose carboxymethylation

Alpha cellulose isolation

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