Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution
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2014
Authors
Nastasović, Aleksandra
Ignjatović, Nenad

Uskoković, Dragan

Marković, Dana
Ekmeščić, Bojana
Maksin, Danijela

Onjia, Antonije

Article (Published version)

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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, V0g , 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, Ω∞1 , and the Flory–Huggins interaction parameters, χ∞12 , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, ΔG∞1 , the partial molar heat of mixing, ΔH∞1 , the sorption molar free energy, ΔGS1 , the sorption enthalpy, ΔHS1 , and the sorption entropy, ΔSS1 , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of Ω∞1 indicated n-alkanes, diethyl ether, tet...rahydrofurane (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.
Keywords:
inverse gas chromatography / poly(l-lactide) / biphasic calcium phosphate / composite materialsSource:
Journal of Materials Science, 2014, 49, 14, 5076-5086Publisher:
- Springer US
Funding / projects:
- Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-45004)
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
DOI: 10.1007/s10853-014-8214-3
ISSN: 0022-2461 (Print); 1573-4803 (Online)
WoS: 000335451700041
Scopus: 2-s2.0-84900419171
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Nastasović, Aleksandra AU - Ignjatović, Nenad AU - Uskoković, Dragan AU - Marković, Dana AU - Ekmeščić, Bojana AU - Maksin, Danijela AU - Onjia, Antonije PY - 2014 UR - https://dais.sanu.ac.rs/123456789/555 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, V0g , 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, Ω∞1 , and the Flory–Huggins interaction parameters, χ∞12 , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, ΔG∞1 , the partial molar heat of mixing, ΔH∞1 , the sorption molar free energy, ΔGS1 , the sorption enthalpy, ΔHS1 , and the sorption entropy, ΔSS1 , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of Ω∞1 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. PB - Springer US T2 - Journal of Materials Science T1 - Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution SP - 5076 EP - 5086 VL - 49 IS - 14 DO - 10.1007/s10853-014-8214-3 UR - https://hdl.handle.net/21.15107/rcub_dais_555 ER -
@article{ author = "Nastasović, Aleksandra and Ignjatović, Nenad and Uskoković, Dragan and Marković, Dana and Ekmeščić, Bojana and Maksin, Danijela and Onjia, Antonije", 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, V0g , 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, Ω∞1 , and the Flory–Huggins interaction parameters, χ∞12 , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, ΔG∞1 , the partial molar heat of mixing, ΔH∞1 , the sorption molar free energy, ΔGS1 , the sorption enthalpy, ΔHS1 , and the sorption entropy, ΔSS1 , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of Ω∞1 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.", publisher = "Springer US", journal = "Journal of Materials Science", title = "Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution", pages = "5076-5086", volume = "49", number = "14", doi = "10.1007/s10853-014-8214-3", url = "https://hdl.handle.net/21.15107/rcub_dais_555" }
Nastasović, A., Ignjatović, N., Uskoković, D., Marković, D., Ekmeščić, B., Maksin, D.,& Onjia, A.. (2014). Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution. in Journal of Materials Science Springer US., 49(14), 5076-5086. https://doi.org/10.1007/s10853-014-8214-3 https://hdl.handle.net/21.15107/rcub_dais_555
Nastasović A, Ignjatović N, Uskoković D, Marković D, Ekmeščić B, Maksin D, Onjia A. Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite by inverse gas chromatography at infinite dilution. in Journal of Materials Science. 2014;49(14):5076-5086. doi:10.1007/s10853-014-8214-3 https://hdl.handle.net/21.15107/rcub_dais_555 .
Nastasović, Aleksandra, Ignjatović, Nenad, Uskoković, Dragan, Marković, Dana, Ekmeščić, Bojana, Maksin, Danijela, Onjia, Antonije, "Determination of thermodynamic interactions of poly(l-lactide) and biphasic calcium phosphate/poly(l-lactide) composite 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 ., https://hdl.handle.net/21.15107/rcub_dais_555 .