Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution
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Nastasović, Aleksandra B.Ignjatović, Nenad L.
Uskoković, Dragan
Markovic, Dana D.
Ekmescic, Bojana M.
Maksin, Danijela D.
Onjia, Antonije E.
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Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308-378 K for PLLA and 308-398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, , and the Flory-Huggins interaction parameters, , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, , the partial molar heat of mixing, , the sorption molar free energy, , the sorption enthalpy, , and the sorption entropy, , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene,... dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.
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Journal of Materials Science, 2014, 49, 14, 5076-5086Funding / projects:
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
- Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
DOI: 10.1007/s10853-014-8214-3
ISSN: 0022-2461; 1573-4803
WoS: 000335451700041
Scopus: 2-s2.0-84900419171
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VinčaTY - JOUR AU - Nastasović, Aleksandra B. AU - Ignjatović, Nenad L. AU - Uskoković, Dragan AU - Markovic, Dana D. AU - Ekmescic, Bojana M. AU - Maksin, Danijela D. AU - Onjia, Antonije E. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5987 AB - Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308-378 K for PLLA and 308-398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, , and the Flory-Huggins interaction parameters, , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, , the partial molar heat of mixing, , the sorption molar free energy, , the sorption enthalpy, , and the sorption entropy, , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents. T2 - Journal of Materials Science T1 - Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution VL - 49 IS - 14 SP - 5076 EP - 5086 DO - 10.1007/s10853-014-8214-3 ER -
@article{ author = "Nastasović, Aleksandra B. and Ignjatović, Nenad L. and Uskoković, Dragan and Markovic, Dana D. and Ekmescic, Bojana M. and Maksin, Danijela D. and Onjia, Antonije E.", year = "2014", abstract = "Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308-378 K for PLLA and 308-398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, , and the Flory-Huggins interaction parameters, , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, , the partial molar heat of mixing, , the sorption molar free energy, , the sorption enthalpy, , and the sorption entropy, , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.", journal = "Journal of Materials Science", title = "Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution", volume = "49", number = "14", pages = "5076-5086", doi = "10.1007/s10853-014-8214-3" }
Nastasović, A. B., Ignjatović, N. L., Uskoković, D., Markovic, D. D., Ekmescic, B. M., Maksin, D. D.,& Onjia, A. E.. (2014). Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution. in Journal of Materials Science, 49(14), 5076-5086. https://doi.org/10.1007/s10853-014-8214-3
Nastasović AB, Ignjatović NL, Uskoković D, Markovic DD, Ekmescic BM, Maksin DD, Onjia AE. Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution. in Journal of Materials Science. 2014;49(14):5076-5086. doi:10.1007/s10853-014-8214-3 .
Nastasović, Aleksandra B., Ignjatović, Nenad L., Uskoković, Dragan, Markovic, Dana D., Ekmescic, Bojana M., Maksin, Danijela D., Onjia, Antonije E., "Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution" in Journal of Materials Science, 49, no. 14 (2014):5076-5086, https://doi.org/10.1007/s10853-014-8214-3 . .