|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Raman analysis of aqueous solutions of ethylene glycol and 1,3-propylene glycol: Fundamental and applied aspectsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 20 ноября 2024 г.
- Авторы: Novikov V.S., Liubimovskii S.O., Kuznetsov S.M., Mel’nik N.N., Sagitova E.A., Aiyyzhy K.O., Ivchenko P.V., Kuzmin V.V., Gudkov S.V., Moskovskiy M.N., Nikolaeva G.Yu
- Журнал: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
- Том: 326
- Год издания: 2025
- Издательство: Pergamon Press Ltd.
- Местоположение издательства: United Kingdom
- Номер статьи: 125174
- DOI: 10.1016/j.saa.2024.125174
- Аннотация: Aqueous solutions of glycols, on the one hand, are widely used in many applications; on the other hand, they can serve as simple and representative models for studying intra- and intermolecular hydrogen bonds. In this work, we analyze the possibilities and limitations of Raman spectroscopy for fundamental and applied researches of such solutions on the examples of ethylene glycol (EG) and 1,3-propylene glycol (1,3-PG). It is shown that Raman spectroscopy is an effective tool for monitoring temporal changes in the structure of glycol solutions deposited on substrates. This study demonstrates that the water content in the solutions on the substrates decreases rapidly with time, and the rate of this decrease depends on the chemical structure of both glycol and substrate. It was found that the reduction in the water content leads to slight decrease in the contents of gauche-conformers in the backbones of EG and 1,3-PG molecules. It is shown that use of the 1064 nm excitation ensures a reliable Raman analysis of automotive antifreezes containing various dyes, in particular determination of the relative contents ofwater and glycol.
- Добавил в систему: Ивченко Павел Васильевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|