Properties enhancement of magnesium phosphate cement by cross-linked polyvinyl alcohol
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F22%3A00547460" target="_blank" >RIV/68378297:_____/22:00547460 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.ceramint.2021.09.279" target="_blank" >https://doi.org/10.1016/j.ceramint.2021.09.279</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2021.09.279" target="_blank" >10.1016/j.ceramint.2021.09.279</a>
Alternative languages
Result language
angličtina
Original language name
Properties enhancement of magnesium phosphate cement by cross-linked polyvinyl alcohol
Original language description
A novel ceramic composite has been obtained by introducing polyvinyl alcohol in magnesium-based chemicallybonded ceramics and exploiting the cross-link reaction with glutaraldehyde during setting. The properties of the obtained material and the interaction of the polymer with the cement reaction have been investigated. Several beneficial effects were observed. Namely, an extension of the working time, a reduction in the water sensitivity, a decrease in the rate of the heat evolution during hardening. The latter has been ascribed to the intervention of surface adsorption processes, which hindered the dissolution of MgO, as well as the nucleation and growth of the magnesium phosphate products, in concert with the film forming ability of the polymer. Thanks to the complementarity of their mechanical properties, the cement and the additive operated in a synergistic fashion, allowing for the obtainment of a material possessing higher strength and better elastic properties. Threedimensional quantitative image analysis from synchrotron X-ray microcomputed tomography evidenced the development of a more compact microstructure, comprising a higher number of crystals of smaller size. As anconsequence, the pore network exhibited a higher fraction of small pores and lower pore connectivity. These characteristics contributed to hinder the water absorption, as confirmed by the fluid transport simulations within the volume. The observed correlation between the solution pH and the polymer cross-link density offers the way to effectively modulate the material performance by acting on the chemical environment thanks to its compatibility with the cross-link reaction.
Czech name
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Czech description
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Classification
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
20501 - Materials engineering
Result continuities
Project
<a href="/en/project/GA20-01280S" target="_blank" >GA20-01280S: Rate control and morphosynthesis in magnesium phosphate cements: role of additives</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ceramics International
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
48
Issue of the periodical within the volume
2
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
1947-1955
UT code for WoS article
000724480000005
EID of the result in the Scopus database
2-s2.0-85116341556