Abstract
AbstractPolymer/polymer interaction parameters χ′23 have been measured at 120°C as a function of polymer concentration for six different poly(vinyl chloride)/linear aliphatic polyester blends. The technique used is inverse‐phase gas chromatography with several molecular probes. The polymers investigated are poly(DL‐lactide), poly(ethylene succinate), poly(ethylene adipate), poly(butylene adipate), poly(δ‐valerolactone), poly(ε‐caprolactone) and poly(hexamethylene sebacate). Probe/polymer interaction parameters χ12 and polymer/polymer interaction parameters χ′23 values are dependent upon the methylene to carbonyl ratio of the polyester, reaching a minimum for a value of 5, this ratio corresponding to poly(ε‐caprolactone) blends. Results are interpreted in terms of pairwise interactions between carbonyl, methylene, and [CHCl] groups.
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