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Precipitation chromatography fractionation: The effect of the ratio support weight/sample size

✍ Scribed by J.M. Alvariño; María Luz Hernández; L. Lain; M. de Renobales; Alicia Torre

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 290 KB
Volume: 14
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(78)90156-8

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✦ Synopsis

The effect of the gravimetric ratio, packing beads/polymer (r), in the chromatographic fractionation of polystyrene has been studied. Anionic polystyrene of bimodal molecular weight distribution was fractionated in three experiments with r values of 25, 50 and 130; a value of about 50 provided the most efficient separation. A GPC self-consistency analysis of this fractionation has been done with very satisfactory results. On the other hand, GPC analysis could not show any significant broadening of the molecular weight distributions of the fractions in going from r values of 130 down to 25.

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