Accurate description of intrinsic viscosity changes under polymer degradation: The schulz broad distributions

✍ Scribed by A. V. Shyichuk

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 255 KB
• Volume: 61
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/(sici)1097-4628(19960801)61:5<725::aid-app1>3.0.co;2-q

✦ Synopsis

For the Schulz broad distributions with initial weight-polydispersity from 2 to 10, the correlation between the intrinsic viscosity and the degradation degree, DD = ln(M,,JM,,), has been found as the following equation system: ln[v] = 1n[qloa(ln Po -In P + DD); P = P F + (Po -P F ) X exp((So -1.43)(exp(-S X DD) -l)/SS -1.43 X DD); So = 0.33 + 0.557 X Pw0; SS = 1.962 + 0.9428 X ln(P,, -1). Here Po, P, and PF are viscositypolydispersities: initial, current, and that of the Flory distribution, respectively. This correlation inaccuracy has been assessed to be about 2%.