Researches on Cellulose 1895-1900, Volumen1Longmans, Green, and Company, 1901 - 180 páginas |
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Página 15
... gave rise to the original mantles . ' It has further been found that the oxides themselves can be dissolved in the cellulose alkaline sulphocarbonate ( viscose ) solution , and artificial threads have been spun con- taining from 25 to ...
... gave rise to the original mantles . ' It has further been found that the oxides themselves can be dissolved in the cellulose alkaline sulphocarbonate ( viscose ) solution , and artificial threads have been spun con- taining from 25 to ...
Página 17
... . , and the latter treated a second time loses a further 4-5 p.ct. It is clear , therefore , that the process is of purely empirical value . C Schulze . This process gave a yield of 47.6 p.ct. Separation - Estimation 17.
... . , and the latter treated a second time loses a further 4-5 p.ct. It is clear , therefore , that the process is of purely empirical value . C Schulze . This process gave a yield of 47.6 p.ct. Separation - Estimation 17.
Página 18
... gave also variable numbers , 44 to 49 per cent . It was found possible to limit these variations by altering the conditions in the later stages of isolating the product ; but further experiments on the celluloses themselves previously ...
... gave also variable numbers , 44 to 49 per cent . It was found possible to limit these variations by altering the conditions in the later stages of isolating the product ; but further experiments on the celluloses themselves previously ...
Página 19
... gave 9 p.ct. of this aldehyde showing the presence of celluloses , other than the normal type . Conclusions . - The subjoined table gives the mean numerical results for yield of end - product or ' cellulose ' by the various methods . In ...
... gave 9 p.ct. of this aldehyde showing the presence of celluloses , other than the normal type . Conclusions . - The subjoined table gives the mean numerical results for yield of end - product or ' cellulose ' by the various methods . In ...
Página 42
... gave this same product , the trinitrate of the anhydride ( levulosan ) by both methods of nitration ( supra ) . The bisaccharides or bioses all give the octonitrates . The degree of instability is variable . Cane - sugar gives a very un ...
... gave this same product , the trinitrate of the anhydride ( levulosan ) by both methods of nitration ( supra ) . The bisaccharides or bioses all give the octonitrates . The degree of instability is variable . Cane - sugar gives a very un ...
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Términos y frases comunes
acetic acetone action alcohol aldehydic alkaline ammonia B.Sc benzoate bleached boiling C. F. CROSS carbohydrates carbon cellulose nitrates Chem chemical CHEMISTRY chlorine College collodion Coloured compounds condensation constitution cotton Cross and Bevan Crown 8vo denitration derivatives dextrose Diagrams dibenzoate digestion dilute dissolved ELEMENTARY Engineering ester ester reaction ether extract fermentation fibre fibrous furfural furfural-yielding furfuroids grms groups heating hemicellulose hexoses hydrate hydrazone hydrolysis Illustrations industrial insoluble investigation isolated jute ketoses lignocellulose lignone LL.D Lond lustra-celluloses mercerisation method molecular molecule NaOH nitric acid nitrocellulose normal cellulose numbers obtained ordinary original osazone oxidation oxidised oxycellulose p.ct paper patent pentosanes pentoses PHYSIOLOGY plant Plates PRACTICAL precipitated Professor proportion purified quantitative reagent residue Royal 8vo Science Scientific Works published silk soda soluble solution solvents starch structural substance sulphocarbonate sulphuric acid temperature thread tion tissue Tollens treated treatment Tussah viscose weight wood Woodcuts yield