NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2017, 8 (3), P. 397–405
Cryometry data and excess thermodynamic functions in the binary system: water soluble bis-adduct of light fullerene C70 with lysine. Assymmetrical thermodynamic model of virtual gibbs energy decomposition – VD-AS
N. A. Charykov – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013; Saint Petersburg Electrotechnical University “LETI”, ul. Professora Popova 5, 197376 Saint Petersburg, Russia
K. N. Semenov – Saint Petersburg State University,7/9 Universitetskaya emb., Saint Petersburg, 199034, Russia
V.V. Keskinov – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia; keskinov@mail.ru
P.V. Garamova – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
D. P. Tyurin – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
I.V. Semenyuk – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
V.V. Petrenko – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
A.V. Kurilenko – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
M.Yu. Matuzenko – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
N. A. Kulenova – D. Serikbayev East Kazakhstan state technical university, A. K. Protozanov Street, 69, Ust-Kamenogorsk city, 070004, The Republic of Kazakhstan
A. A. Zolotarev – Saint Petersburg State Technological Institute (Technical University), Moskovsky prospect, 26 Saint Petersburg, 190013, Russia
D. G. Letenko – Saint Petersburg State University of Architecture and Civil Engineering (SPSUACE), 2-nd Krasnoarmeiskaya St. 4, 190005 Saint Petersburg, Russia
The temperature of water-ice crystallization initiation decreases (ΔT) were determined in the binary water solutions of water soluble derivative of light fullerene C70 with amino-acid lysine at 272.99 – 273.15 K. Partial molar excess functions for H2O were calculated. For the thermodynamic description of our systems, we have elaborated an original semi-empirical model VD-AS (Virial Decomposition Asymmetric Model), based on the virial decomposition of the molar Gibbs energy of the component molar fractions in the solution. With the help of the VD-AS model, partial molar functions of nanoclusters were calculated. Excess and full average Gibbs energies for the solutions and miscibility gaps concentration regions (with the help of diffusional instability equations) were calculated. Thus, the VD-AS model excellently describes pre-delamination or micro-heterogeneous-structure formation in the considered solutions. These calculations were accordingly confirmed by dynamic light scattering data.
Keywords: cryometry, light fullerene C70, lysine, thermodynamic model.
PACS 61.48.+c
DOI 10.17586/2220-8054-2017-8-3-397-405