Researches on Cellulose 1895-1900, Volumen1Longmans, Green, and Company, 1901 - 180 páginas |
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Página 14
... purified cotton fabric - or yarn - is treated with a concentrated solution of the mixed nitrates of thorium and cerium , and , after drying , the cellulose is burned away . A perfect and coherent skeleton of the fabric is obtained ...
... purified cotton fabric - or yarn - is treated with a concentrated solution of the mixed nitrates of thorium and cerium , and , after drying , the cellulose is burned away . A perfect and coherent skeleton of the fabric is obtained ...
Página 17
... purified by boiling with dilute acid and dilute alkali . After thorough washing it was air - dried . ( b ) Wood cellulose . - Pine wood sawdust was treated by digestion for fourteen days with dilute nitric acid with addition of chlorate ...
... purified by boiling with dilute acid and dilute alkali . After thorough washing it was air - dried . ( b ) Wood cellulose . - Pine wood sawdust was treated by digestion for fourteen days with dilute nitric acid with addition of chlorate ...
Página 18
... purified wood ' 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 ...
... purified wood ' 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 ...
Página 19
... Purified wood . 11 57'93 71.64 75 ° 27 49 27 46.56 Raw wood 47.60 1 40.82 138.87 The final conclusion drawn from the results is that none of the processes fulfil the requirements of an ideal method . Those which may be carried out in a ...
... Purified wood . 11 57'93 71.64 75 ° 27 49 27 46.56 Raw wood 47.60 1 40.82 138.87 The final conclusion drawn from the results is that none of the processes fulfil the requirements of an ideal method . Those which may be carried out in a ...
Página 28
... purified cotton cellulose from the raw product . The following ex- periments may be cited : Specimens of American ... purification , the residue was dried and weighed . The American cotton yielded 90'0 p.ct. , and the Egyptian 920 p.ct ...
... purified cotton cellulose from the raw product . The following ex- periments may be cited : Specimens of American ... purification , the residue was dried and weighed . The American cotton yielded 90'0 p.ct. , and the Egyptian 920 p.ct ...
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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