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Proceedings Paper

Laser Raman research of the dynamic hydratation of some sugars by isotopic H/D exchange
Author(s): Valeriy M. Klimovich; Ivan S. Gulyi
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Paper Abstract

Water - general-purpose solvent and a important component of uncountable set of objects of the living and lifeless nature. The development of molecular and structural - chemical representations has allowed to give depleting explanation of a special talent of molecules of water to derivate connection with fragments almost of any matters. Began to be elucidated also role of "bonding" water in originating major physical characteristics of hydrated matters -clay, gypsum, of a cement rock some types of ferroelectric.At last, after discovery of L. Poling in 1961 of intercoupling between a phenomenon of a narcosis and crystallization of hydrates of drug matters became apparent, that the water, bound with biological molecules, somehow participates in control ofbiochemical processes. The main role in formation of the unified approach to immense variety of problems of "bonding" water belongs to to molecular aspect. At a level of molecules all world of connections of water - hydrates both solutions and their transmutations is operated by unified force concluded in combination of hydrogen bonds and ion - dipole interplays of molecules of water with fragments of other matters. The indicated rather gentle closely coupled interfaces are responsible for unique capacity of water to derivate connections with huge set of matters, stipulate a development of major properties and features of behavior of hydrates. To their number concern a crystallization, of solid phase transformations, including ferroelectric, partial or full dehydration. In aqueous solution the modification of the short-range order in arrangement of molecules can result in to phase change in a liquid -so-called stratifjing. The combination of stratifying and reallocating between nonniixing with kinetic effects conditioned by deboosting of Brownian motion and diffusive mass transfer near to a stagnation point, gives padding capabilities for usage in problems of a transmission of information with the help of chemical signals and allow with exclusive accuracy to regulate a carrier and high scale ofspecificity ofconcentrating in one offluid phases. In activity through of isotope WD exchange the movability of 'bonding' water in solutions of a D-glucose saccharose and tretbutanol is investigated. The isotopic exchange was conducted from a vapour phase at 1 00 aliquot excess of molecules D20. It is established, that in a system a D-glucose - tretbutanol - water, saccharose - tretbutanol - water the considerable proportion of molecules H20 is unapproachable for isotope H/D of exchange, that it is possible to explain by deboosting diffusive ofmass transfer near to a stagnation point. The deboosting of diffusion near to a stagnation point of a gravitational segregation, apparently, should result in to deboosting ofchemical reactions, and, therefore, is that in physics call non-linear, or control, member.

Paper Details

Date Published: 26 February 2001
PDF: 4 pages
Proc. SPIE 4205, Advanced Environmental and Chemical Sensing Technology, (26 February 2001); doi: 10.1117/12.417470
Show Author Affiliations
Valeriy M. Klimovich, Ukrainian State Univ. of Food Technologies (Ukraine)
Ivan S. Gulyi, Ukrainian State Univ. of Food Technologies (Ukraine)

Published in SPIE Proceedings Vol. 4205:
Advanced Environmental and Chemical Sensing Technology
Tuan Vo-Dinh; Stephanus Buettgenbach, Editor(s)

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