28.02.2013 Views

Handbook of Size Exclusion Chromatography and Related ...

Handbook of Size Exclusion Chromatography and Related ...

Handbook of Size Exclusion Chromatography and Related ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Figure 4 Result <strong>of</strong> the PBT analysis: molecular weight distribution relative to PMMA<br />

calibration.<br />

Figure 5 Elution pr<strong>of</strong>ile <strong>of</strong> a biodegradable poly(lactic acid). Eluent: 2,2,2trifluoroethanol<br />

þ 0.1 M sodium-trifluoroacetate. Flow rate: 1 mL/min. Columns: PSS<br />

PFG 100 A ˚ ,7mm, 8 300 mm þ PFG 1000 A ˚ ,7mm, 8 300 mm. Temperature: 258C.<br />

Detection RI. St<strong>and</strong>ards: 12 PSS PMMA calibration st<strong>and</strong>ards.<br />

4.2 Polyamides<br />

Most <strong>of</strong> the interest in investing polyamides is related to the aliphatic polyamides<br />

polyamide 6or 6,6. Figures 6to 8show typical results that are obtained on<br />

polyamide analysis in fluorinated eluents using PSS methods.<br />

© 2004 by Marcel Dekker, Inc.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!