Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Determination of Viscosity Average Molecular Weight from Number and Weight Average Molecular Weights

  • Park, Eun-Soo (Department of Ploymer Science and engineering Inha University) ;
  • Yoon, Jin-San (Department of Ploymer Science and engineering Inha University)
  • Published : 2000.10.01
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Abstract

can be determined from the number and weight average molecular weight. When the value of the exponent, a, appearing in the relation between the intrinsic viscosity and the viscosity average molecular weight, is in the range from 0.6 to 0.8, as is the case for the most polymers, the viscosity average molecular weight is much more close to the weight average molecular weight than to the number average molecular weight.

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References

  1. Polymer Handbook M. Kurata;Y. Tsunashima;M. Iwama;K. Kamada;J. Brandrup(Ed.);E. H. Immergut(Ed.)
  2. Text book of Polymer Science,(3rd Ed.) F. W. Billmeyer
  3. J. Chem. Phys. v.16 B. H. Zimm
  4. A computer program is available upon request for calculation of the gamma function