Structural analysis of embedding polyethylene glycol in silica aerogel

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F21%3A00007993" target="_blank" >RIV/46747885:24410/21:00007993 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24620/21:00007993
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1387181120306363?via=ihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1387181120306363?via=ihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.micromeso.2020.110636" target="_blank" >10.1016/j.micromeso.2020.110636</a>

Result language
angličtina
Original language name
Structural analysis of embedding polyethylene glycol in silica aerogel
Original language description
Embedding of the functional materials into aerogel powders was realized via the filtration method. In this work, the effect of aerogel on the molecule structure of the embedded polyethylene glycol (PEG) was investigated by dispersing aerogel powders in 20 wt% PEG aqueous solution with subsequent filtration method. The encapsulation of the PEG in the aerogel was characterized by isothermal nitrogen (N2) adsorption/desorption. The structure of the embedded PEG in the aerogel powders was investigated via SEM-EDS, FE-SEM, FT-IR, XRD. TG-DTA, DSC, and leakage test. It was found that the only physical capillary force worked to adsorb PEG molecules from its solution by the aerogel powders. The BET surface area and the DFT pore volume of the PEG/aerogel powders were reduced obviously when compared with pure aerogel powders. The ability of the pores in the aerogel powders ranging from 14 nm to 16 nm to adsorbing the PEG molecules from the water system was weak. The crystallinity of the PEG was significantly reduced because of the limited space for crystal growth, and the decomposed temperature and thermal capacity decreased correspondingly.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10400 - Chemical sciences

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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