1.1 This test method covers a liquid-chromatographic procedure for the separation of primary and secondary antioxidant and slip additives currently used in polyethylene plastics. These additives are extracted with either isopropanol (resin densities < 0.94 g/cm³) or cyclohexane (resin densities > 0.94 g/cm³) prior to liquid-chromatographic separation. The ultraviolet absorbance of the eluting compound(s) is measured and quantitation is performed using external calibration.

Product Details

Published:

11/01/2018

Number of Pages:

7

File Size:

1 file , 130 KB

Redline File Size:

2 files , 260 KB