Browsing by Author "Ilter, Z."

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    Article
    Analysis of Physical and Thermodynamic Properties of Poly(2-Cyclopentyliden (cpdmma-St) Polymer Using Inverse Gas Chromatography
    (Chemical Publishing Co., 2015) Hamdi Karagöz, M.; Kalkan, A.; Ilter, Z.
    In this study, thermodynamic and physical properties of poly(2-cyclopentyliden-1,3-dioxolane-4-yl-methylmethacrylate-co-styrene) (%55CPDMMA-%45ST) were investigated using inverse gas chromatography. Two groups of alcohols and alkanes with different chemical natures and polarities were used to determine certain properties of (CPDMMA-ST)-solute systems. The specific retention volume (Vg0), glass transition temperature (Tg), adsorption enthalpy (ΔHa), the sorption enthalpy (ΔH1S), sorption free energy (ΔG1S), sorption entropy (ΔS1S), weight fraction activity coefficients of solute probes at infinite dilution (Ω1∞), partial molar enthalpy of solute probes at infinite dilution (ΔH1∞) and Flory-Huggins interaction parameters (χ12∞), between polymer and solvents were determined in the temperature range of 313-473 K. In addition, the solubility parameters of CPDMMA-ST at infinite dilution was determined by plotting the graph of [δ12-(ΔG1∞/V1)] versus solubility parameters (δ1), of probes.
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    Article
    Physical and Thermodynamic Properties of Poly(2-Phenyl Methyl-Methacrylate Polymer With Inverse Gas Chromatography
    (Chemical Publishing Co., 2009) Karagöz, M.H.; Erge, H.; Ilter, Z.
    In this study, the physical and thermodynamic properties of poly(2-phenyl-1,3-dioxolane-4-yl-methyl-methacrylate-co-ethylmethacrylate) (PDMMA-EM) were investigated by using inverse gas chromatography. Two groups of alcohols and alkanes with different chemical natures and polarities were used to obtain some properties of (PDMMA-EM-solvent) systems. The specific retention volume, Vg0, glass transition temperature, Tg, the sorption enthalpy, ΔH1s, sorption free energy, ΔG1s, sorption entropy, ΔG1 s, the weight fraction activity coefficients of solute probes at infinite dilution,ΩΔG1∞ and Flory-Huggins interaction parameters, XΔG12∞, between polymer and solvents were determined in the temperature range of 333-473 K. The solubility parameters of PDMMA-EM at infinite dilution was also found by plotting the graph of [δΔG12 - (ΔGΔG1∞/V1)] versus solubility parameters, δ1, of probes.