High Temperature GPC Analysis with HSPgel HT Column

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Jinchuan Yang and Alice J. Di Gioia
ICPC 2006, Oct 16-18 2006, Houston, Texas
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This poster was shown at the First International Conference on Polyolefin Characterization (ICPC). Gel Permeation Chromatography (GPC) of polyolefins uses 1,2,4-trichlorobenzene (TCB) as the mobile phase at elevated temperatures (~140oC). This solvent is toxic and is on the Priority Chemicals List in the EPA National Waste Minimization Program. Replacing traditional GPC columns with columns that enable lab personnel to run experiments in less time and to generate less toxic waste (mobile phase) would benefit any lab analyzing polyolefins. The application of Waters HSPgel series columns can reduce both run time and solvent consumption. With a single HSPgel (6.0x150 mm) column a sample run may finish within 7 minutes at a flow rate of 0.6 ml/min. The run time is ~5 X less and the solvent use per run is ~9 X less compared with a traditional analysis on a bank of three columns (7.8x300 mm). Using a cumulative matching calibration technique, the GPC results from the HSPgel columns are reproducible and accurate. The data shown here illustrate the usefulness of HSPgel HT series columns for polyolefin samples.

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