Spectroscopic investigation of hydrocellulose phenylosazones in cadoxen solution
β Scribed by H. S. Blair; R. Cromie
- Publisher
- John Wiley and Sons
- Year
- 1974
- Tongue
- English
- Weight
- 327 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0021-8995
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Determinations of individual terminal carboxylic acid endgroups and terminal reducing sugar moieties together with analysis of spent liquor revealed that the same reactions occur during treatment of hydrocellulose with hot sodium bicarbonate as with sodium hydroxide solution. Some fragmentation reac
The fractionation of cellulose in cadoxen solutions has been carried out by precipitation with aqueous propanol. The reproducibility of the method has been tested by means of parallel fractionations, and shown to be good, for both research and routine work. The fractionation data have been analysed
l'he dynamics ot relaxation from upper vibrational levels of the ST state and from the upper vibronic states S: and .S: of per) Icnc dis';olvcd m orgmc solvents of vGz~us vlscositles and pohities have been invcstipnted. Uneqxcted slow dewy times hvc been me,wwd. of 11~ order of 30 ps for vibrational