Dn/dc, IV of polystyrene in m-cresol?

11 July 2022 0 9K Report

Hi,

I'd like to determine the molecular weight of polyamides using m-cresol with high-temperature GPC. A triple detector method is needed for the molar mass estimation. For doing so, I need to estimate K values for DI, LS, and VS. In all calculations, I want to need to run a polystyrene sample in m-cresol for the estimation but it seems like dn/dc and intrinsic viscosity of polystyrene in m-cresol is critical for the calculation.

Any idea of how to estimate dn/dc or IV value for polystyrene in m-cresol? Or any advice on polyamide mw estimation.

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