Capillary column inverse gas chromatography to determine the thermodynamic parameters of binary solvent poly (styrene-block-butadiene) rubber systems

• Main Authors: Hassiba Benguergoura, Amina Allel, Waseem Sharaf Saeed, Taïeb Aouak
• Format: Article
• Language: English
• Published: Elsevier 2021-04-01
• Series: Arabian Journal of Chemistry
• Subjects: Inverse gas chromatography; Capillary column; Poly(styrene-block-butadiene) rubber; Thermodynamic parameters; Nonrandom two-liquid model; Universal quasichemical model
• Online Access: http://www.sciencedirect.com/science/article/pii/S1878535221000551

Capillary column inverse gas chromatography (CCIGC) was adapted to determine the thermodynamic properties of poly (styrene-co-butadiene) rubber (SBR) and various molecules, including aliphatic alkanes (C6, C7 and C8), alicyclics (C5 and C6)), aromatics (benzene and toluene), ethanol, tetrahydrofuran and acetonitrile. Capillary column inverse gas chromatography (CCIGC) was adapted to determine the thermodynamic properties of poly (styrene-co-butadiene) rubber (SBR) and various molecules, including aliphatic alkanes (C6, C7 and C8), alicyclics (C5 and C6)), aromatics (benzene and toluene), ethanol, tetrahydrofuran and acetonitrile. The results obtained were compared with those of the literature determined by packed column (PCIGC) and by other methods. It was revealed that the values ​​of the heat of vaporization and the Hansen solubility parameter determined by CCIGC in some cases agree well with those of the literature, while in other cases deviates significantly. The comparison of the values of the literature obtained by PCIGC determined by different authors, significant differences were also observed in certain cases. This gap is undoubtedly related to the experimental errors occurred during the support treatment and/or during the preparation of the column. The activity coefficients of the solvents at infinite dilution were calculated and compared with those obtained by fitting the non-random two-liquid and universal quasichemical models.