Inverse gas chromatographic study of polymer blend interactions and their temperature dependence

✍ Scribed by Z. H. Shi; H. P. Schreiber

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 572 KB
• Volume: 46
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1992.070460506

✦ Synopsis

The temperature dependence of the thermodynamic interactions in blends of polypropylene and a fluorochemical was studied by inverse gas chromatography (IGC) . A modified procedure has been proposed to evaluate the effective surface composition in polyblends. This shows that the low surface energy component preferentially concentrates in the surface region of blends. Moreover, the new procedure greatly reduces the probe-to-probe variation of Xz3, a problem frequently encountered in thermodynamic applications of the IGC method. As a result, IGC may now be used with increased confidence for the determination of interaction thermodynamics in polymer systems over broad temperature ranges.