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Recertification of the SRM 1483a, a Polyethylene

Published

Author(s)

Kathleen M. Flynn, William R. Blair

Abstract

The recertification of a narrow molecular weight distribution poly(ethylene) Standard Reference Material, SRM 1483a, is described. Studies by size exclusion chromatography to obtain the bottle-to-bottle homogeneity are described. The intrinsic viscosity at 130 degrees C of SRM 1483a in 1,2,4-trichlorobenzene was determined to be 80.0 mL/g with a sample standard deviation of 0.86 mL/g. The combined expanded standard uncertainty of 1.84 mL/g is estimated for this determination. The intrinsic viscosity measured for SRM 1483a is in good agreement with the intrinsic viscosity of 79.4mL/g [+ or -] 0.79 (limit of systematic error) obtained for SRM 1483 by Wagner and Verdier in 1978. Both SRM 1483 and SRM 1483a used the same source resin. The similarity in their certified intrinsic viscosity values indicate that the source resin was stable under laboratory storage conditions.
Citation
Special Publication (NIST SP) -

Keywords

intrinsic viscosity, molecular mass, polyethylene, polymer standard

Citation

Flynn, K. and Blair, W. (2021), Recertification of the SRM 1483a, a Polyethylene, Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD (Accessed February 24, 2024)
Created October 12, 2021