Polydisperse polymers with random trifunctional branching. I. Evaluation of the extent of branching
β Scribed by Shultz, A. R.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 612 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0449-2951
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π SIMILAR VOLUMES
The melt viscosity (,Ta) is calculated for polydisperse branched polymers by two methods: (1) by extending Graessley's theory of melt flow of polydisperse linear chains to include the effects of branching, and (2) by empirical deduction leading to the relation (~TB;'/('/L)= [(Ss:)w/ (SL2)~,] w2 for
Three branching functions are evaluated for use in the measurement of random branching by GPC. Initial evaluations of the functions g1l2, g3/2, and h3 were made by computer simulations of GPC experiments using published data of lightly and highly randomly branched polymers. Actual GPC experiments we
## Abstract The effect of longβand shortβchain branching in polymer molecules on gelβpermeation chromatographic (GPC) separation is discussed. The calculation of calibration curves for branched polymers is developed from the universal calibration technique based on the hydrodynamic volume concept a