Chromatographic mass of a polymer and its use for determining the molecular mass characteristics
The method has been proposed for determining the molecular characteristics of flexible-chain polymers that obey the universal calibration principle and for which there are available experimental data on the intrinsic viscosity. This method is based on studying the dependence of the hydrodynamic volume M n[η], M w[η], M z[η], and M η[η] on parameter a in the Mark-Kuhn-Houwink equation. It has been found that, for parameter a varying in the range from 0.5 to 0.8, the weight-average hydrodynamic volume M w[η] remains almost unchanged. This allows estimation of M w based on a single intrinsic viscosity value. The notion of the chromatographic mass of a polymer is advanced and is employed for determining other molecular mass parameters.
KeywordsPDMS Polymer Science Series Intrinsic Viscosity Molecular Parameter Chromatographic Mass
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- 1.B. G. Belen’kii and P. P. Nefedov, Vysokomol. Soedin., Ser. A 14, 1658 (1972).Google Scholar
- 3.A. A. Savitskii and I. I. Skorokhodov, Vysokomol. Soedin., Ser. B 33, 669 (1991).Google Scholar
- 4.A. A. Savitskii and I. I. Skorokhodov, Polymer Science, Ser. B 44, 329 (2002) [Vysokomol. Soedin., Ser. B 44, 2245 (2002)].Google Scholar
- 5.E. L. Styskin, L. B. Itsikson, and E. V. Braude, Practical High-Performance Liquid Chromatography (Khimiya, Moscow, 1986) [in Russian].Google Scholar