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X-ray Reflectometry of Thin Films Formed during Phase Separation of Organic Solutions of Aliphatic Polyethers in Water.

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Title: X-ray Reflectometry of Thin Films Formed during Phase Separation of Organic Solutions of Aliphatic Polyethers in Water.
Authors: Asadchikov, V. E.1 (AUTHOR) asad@crys.ras.ru, Volkov, Y. O.1 (AUTHOR), Roshchin, B. S.1 (AUTHOR), Nuzhdin, A. D.1 (AUTHOR), Chernavskaya, E. R.2 (AUTHOR), Tikhonov, A. M.3 (AUTHOR), Mironov, A. V.1 (AUTHOR), Mariyanac, A. O.1 (AUTHOR), Popov, V. K.1 (AUTHOR)
Source: Crystallography Reports. Feb2023, Vol. 68 Issue 1, p104-109. 6p.
Subjects: X-ray reflectometry, Thin films, Phase separation, Polyethers, Polyester films, X-ray scattering
Abstract: The possibilities of X-ray reflectometry for studying the structure of planar liquid-phase membranes are demonstrated by the example of polyester films formed on the surface of deionized water from solutions of polylactoglycolide (PLG) in chloroform and tetraglycol (TG). It is found that the use of solutions with PLG concentrations ranging from 1 to 4 wt % or above 6 wt % leads to a proportional increase in the density of these films with preservation of their structure and thickness up to 25 Å. At a PLG concentration close to 5 wt % the PLG/TG system transits to an unstable state, characterized by intense penetration of PLG aliphatic chains into the water substrate bulk to a depth up to 100 Å. [ABSTRACT FROM AUTHOR]
Copyright of Crystallography Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: X-ray Reflectometry of Thin Films Formed during Phase Separation of Organic Solutions of Aliphatic Polyethers in Water.
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  Data: <searchLink fieldCode="JN" term="%22Crystallography+Reports%22">Crystallography Reports</searchLink>. Feb2023, Vol. 68 Issue 1, p104-109. 6p.
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  Data: <searchLink fieldCode="DE" term="%22X-ray+reflectometry%22">X-ray reflectometry</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Phase+separation%22">Phase separation</searchLink><br /><searchLink fieldCode="DE" term="%22Polyethers%22">Polyethers</searchLink><br /><searchLink fieldCode="DE" term="%22Polyester+films%22">Polyester films</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+scattering%22">X-ray scattering</searchLink>
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  Data: The possibilities of X-ray reflectometry for studying the structure of planar liquid-phase membranes are demonstrated by the example of polyester films formed on the surface of deionized water from solutions of polylactoglycolide (PLG) in chloroform and tetraglycol (TG). It is found that the use of solutions with PLG concentrations ranging from 1 to 4 wt % or above 6 wt % leads to a proportional increase in the density of these films with preservation of their structure and thickness up to 25 Å. At a PLG concentration close to 5 wt % the PLG/TG system transits to an unstable state, characterized by intense penetration of PLG aliphatic chains into the water substrate bulk to a depth up to 100 Å. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Crystallography Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Feb2023
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