title: Ammonium Y zeolite applied as a thermochemolysis reagent for identification of polyethers and polyesters.
abstract: A potential thermochemolysis reagent has been tested for the pyrolysis gas chromatographic identification of polyether, polyester and polyether- or polyester-based thermoplastic polyurethane. The main advantage of ammonium Y zeolite over liquid reagents is that it does not react prior to pyrolysis, and its reactions have no incomplete products. The procedure of the thermochemolysis is as simple as running a pyrolysis-GC/MS analysis sampling a powder mixture of roughly equal mass of polymer and ammonium Y zeolite. The GC/MS chromatograms obtained show that the products of thermochemolysis are specific to the diol and dicarboxylic units of the polymer. It was observed that ethanal or 1,4-dioxane forms from ethylene oxide components of polyethers and polyesters, tetrahydrofuran from butylene oxide units, hexanedinitrile from adipate groups, and benzodinitrile from terephthalate groups.
authors.affiliation: Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Pusztaszeri út 59-67, 1025 Budapest, Hungary. blazso.marianne@ttk.mta.hu
authors.forename: Marianne
authors.initials: M
authors.lastname: Blazsó
authors.forename: János
authors.initials: J
authors.lastname: Bozi
mesh_terms: D055598:Chemical Phenomena; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D006358:Hot Temperature; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry; D011091:Polyesters / Q000032:analysis / Q000737:chemistry; D011140:Polyurethanes / Q000032:analysis / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D009930:Organic Chemicals; D011091:Polyesters; D011140:Polyurethanes; D000644:Quaternary Ammonium Compounds; D017641:Zeolites