Martínez Casado, Francisco Javier and Sánchez Arenas, Ángel Antonio and García Pérez, María Victoria and Redondo Yélamos, María Isabel and López Andrés, Sol and Rodríguez Cheda, José Antonio (2007) Short chain lead (II) alkanoates as ionic liquids and glass formers: A d.s.c., X-ray diffraction and FTIR spectroscopy study. Journal of chemical thermodynamics, 39 (3). pp. 455-461. ISSN 0021-9614
Three members of the lead (II) n-alkanoates (from etanoate to n-butanoate) have been synthesized, purified and studied by d.s.c., Xray diffraction, and FTIR spectroscopy. Lead (II) acetate, propanoate, and butanoate present only a melting transition at T = (452.6, 398.2, and 346.5) K, with DfH = (16.0, 13.1, and 15.6) kJ Æ mol1, and DfS = (35.3, 32.8, and 45.1) J Æ mol1 Æ K1, respectively. These temperature data correct to a great extent the historical values reported in the literature. These three members readily quench into a glass state. Their corresponding Tg values are (314.4, 289.0, and 274.9) K, respectively, measured by d.s.c. at a heating rate of 5 K Æ min-1.
|Uncontrolled Keywords:||Lead (II) short alkanoates; Glass; Ionic liquid; D.s.c.; FTIR; XRD|
|Subjects:||Sciences > Geology > Crystallography|
|Deposited On:||02 Feb 2010 15:44|
|Last Modified:||03 Sep 2010 08:11|
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