Search results for "Glycol units"

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A statistical design of experiments for optimizing the MALDI-TOF-MS sample preparation of polymers. An application in the assessment of the thermo-me…

2011

[EN] The sample preparation procedure for MALDI-TOF MS of polymers is addressed in this study by the application of a statistical Design of Experiments (DoE). Industrial poly (ethylene terephthalate) (PET) was chosen as model polymer. Different experimental settings (levels) for matrixes, analyte/matrix proportions and concentrations of cationization agent were considered. The quality parameters used for the analysis were signal-to-noise ratio and resolution. A closer inspection of the statistical results provided the study not only with the best combination of factors for the MALDI sample preparation, but also with a better understanding of the influence of the different factors, individua…

Solucions polimèriquesEthylenePolymersAnalytical chemistryDegradation kineticsBiochemistryThermo-mechanical degradationSample preparation procedureAnalytical ChemistryMatrix (chemical analysis)chemistry.chemical_compoundDegradationGlycolsMatrix assisted laser desorption ionization time of flight mass spectrometryPolyethylene terephthalateMechanismsCationizationSample preparationRecyclingMechanical recyclingSpectroscopyPriority journalchemistry.chemical_classificationDithranolSignal to noise ratioPolyethylene terephthalateHydrolysisMultiple processingPolymerPoly (ethylene terephthalate)Potential reactionsInjection cyclesMAQUINAS Y MOTORES TERMICOSInductively coupled plasmaSimulationEthersMatrix-assisted laser desorption/ionization time-of-flightQuality parametersDesign of ExperimentsGlycol unitsSample preparationArticleEthyleneEnvironmental ChemistryPolyethylene terephthalatesMALDI TOF MSSignal noise ratioMass spectrometryMatrixTermoplàsticsSignal to noiseTransesterificationDegradation mechanismMatrix-assisted laser desorption/ionizationStatistical design of experimentsTransesterificationchemistryChemical engineeringOligomersDesorptionEthylene glycolControlled studyProcess optimizationAnalytica chimica acta
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