Fractionation of a polymer using a preparative-scale continuous chromatograph
β Scribed by P. E. Barker; B. W. Hatt; A. N. Williams
- Book ID
- 112730158
- Publisher
- Springer
- Year
- 1978
- Tongue
- English
- Weight
- 649 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0009-5893
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π SIMILAR VOLUMES
A preparative-scale elution chromatographic column is described which will fractionate 45 g. of polymer in a single operation. The size of the column is kept to manageable dimensions by reducing the temperature differential from 50 to 10Β°C. along the length of the temperature-gradient section. I t a
Trimethylsilylcellulose (TMSC) was prepared from commercial cellulose with a mixture of hexamethyldisilazane and chlorotrimethylsilane in the solvent system N,N-dimethylacetamideAithium chloride. The soluble, highly silylated polymer (degree --of substitution, DS 2.9) had a molar mass aW of 500 kg/m