<div class="csl-bib-body">
<div class="csl-entry">Consolati, G., Quasso, F., Yaynik, E., Briatico Vangosa, F., Šauša, O., Ehrmann, K., & Švajdlenková, H. (2022). Thermal expansion of free volume in “classic” and regulated dimethacrylates: photocured directly and via a mask to study pillar formation. <i>Physical Chemistry Chemical Physics</i>, <i>24</i>(23), 14299–14309. https://doi.org/10.1039/d2cp00882c</div>
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dc.identifier.issn
1463-9076
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/148152
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dc.description.abstract
The temperature dependence of free volume in dimethacrylates (poly2M), cured by direct irradiation (poly2M-A) or via a mask (poly2M-B), and in a thiol-based 2M sample (poly2M-co-EDDT), was investigated by positron annihilation lifetime spectroscopy (PALS) and dilatometry (DIL) to study the influence of thiol regulation on the microstructure via free volume characteristics. It was found that the free volume fraction as determined from experimental data by using the standard spherical approach for the hole shapes showed systematic differences from the analogous quantity as evaluated from the lattice-hole theory. Much better results were obtained for cylindrical holes, which expand 'anisotropically' in poly2M samples and 'isotropically' in the poly2M-co-EDDT resin. In addition, the hydrogen bond changes and the conversion of monomers in cured samples studied by near infra-red spectroscopy (NIR) revealed spectrum-structure correlations for the final cured thermosets.
en
dc.language.iso
en
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dc.publisher
ROYAL SOC CHEMISTRY
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dc.relation.ispartof
Physical Chemistry Chemical Physics
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dc.subject
Spectrum Analysis
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dc.subject
Temperature
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dc.subject
Electrons
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dc.subject
Sulfhydryl Compounds
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dc.title
Thermal expansion of free volume in "classic" and regulated dimethacrylates: photocured directly and via a mask to study pillar formation
