Column Fractionation of High Pressure Polyethylene and Physical Properties of the Fractions II. Effects of Selective Deposition on the Fractionation
In order to fractionate high pressure polyethylene successfully, the solubility of the samples with difflerent branches and molecular weights in p-xylene-ethylcellosolve mixtures was measured. It was found that the selective deposition of high pressure polyethylene with increasing molecular weight w...
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| Published in | Kobunshi Kagaku Vol. 26; no. 292; pp. 542 - 547 |
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| Main Authors | , |
| Format | Journal Article |
| Language | Japanese |
| Published |
The Society of Polymer Science, Japan
25.08.1969
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| Online Access | Get full text |
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| Summary: | In order to fractionate high pressure polyethylene successfully, the solubility of the samples with difflerent branches and molecular weights in p-xylene-ethylcellosolve mixtures was measured. It was found that the selective deposition of high pressure polyethylene with increasing molecular weight was accomplished in the mixed solvent of xylene-ethylcellosolve (volume ratio 100/50). The Effect of loading of high pressure polyethylene on the efficiency of fractionation was checked by comparing cumulative molecular weight distribution curves and by ultracentrifugation method. In addition, the small scale fractionation was compared with the large scale one. The Schlieren patterns of the fractions obtained in both cases show satisfactory fractionation. |
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| ISSN: | 0023-2556 1884-8079 |
| DOI: | 10.1295/koron1944.26.542 |