Kaziyah8720 Kaziyah8720

24-05-2023
Chemistry

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Two samples (same polymer) with narrow molecular weight distributions are prepared for a new polymer. Some measurements are made in acetone and in hexane. (dl: deciliter, 1 liter=10 deciliters) `
Medium Parameter Sample A Sample B
Acetone ,25C Mn (Osmotic Pressure) 8.05x104 Not run
Acetone, 25C Second Viral Coeff. zero Acetone, 25C Intrinsic viscosity 0.87 dl/g 1.32 dl/g
Hexane, 25C Intrinsic viscosity 1.25 dl/g 2.05 dl/g
(a), what is the Mn of sample B?
(b), what are the Mark-Houwink-Sakurada parameters (K’ and a) in acetone and in hexane?

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