A New Inverse GC Method for Separating Surface Retention Volume from Total Retention Volume for Characterization of the Surface Properties of Polymers at Temperatures above T (g)

作者：He Mingjia; Shi Baoli

来源：Chromatographia, 2009, 69(5-6): 567-570.

DOI：10.1365/s10337-008-0909-7

• Inverse gas chromatography
• Glass transition temperature
• Polymers

This paper introduces a new inverse gas chromatographic method for separating surface retention volume (V (s)) from total retention volume (V (n)), to enable characterization of the surface properties of polymeric material with low T (g). P(VDF-co-HFP) was chosen to prove the method. After correction for 'inert' solid support effect and extrapolation of the flow rate to zero, V (s) of every probe was separated successfully from V (n). The surface properties of P(VDF-co-HFP) calculated from V (s) were: dispersive free energy 21.5 +/- A 0.2 mJ m(-2), Lewis acid number, K (a), 0.091 +/- A 0.002, and base number, K (b), 0.209 +/- A 0.008.

• 出版日期2009-3
• 单位东北林业大学