Translation of segment scale stiffening into macro scale reinforcement in polymer nanocomposites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU134543" target="_blank" >RIV/00216305:26620/20:PU134543 - isvavai.cz</a>
Result on the web
<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/pen.25317" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/pen.25317</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/pen.25317" target="_blank" >10.1002/pen.25317</a>
Alternative languages
Result language
angličtina
Original language name
Translation of segment scale stiffening into macro scale reinforcement in polymer nanocomposites
Original language description
Structuring of polymer nanocomposites (PNCs) with an aid of relatively weak external magnetic fields has been studied as a method for control of the nano- and microstructure. Magnetic nanoparticles (NPs) were assembled into high aspect ratio one-dimensional strings and unidirectionally oriented with magnetic field (B=0-50 mT) within the photopolymer matrix. The effect of the anisotropic MNPs assemblies on the mechanical properties was studied over wide temperature range for the first time. Impact of various reinforcing mechanisms was distinguished with respect to the position of the glass transition temperature (Tg). The reinforcing effect exhibits temperature dependency with a maximum ~65°C above the glass transition and only negligible effect below the Tg. In addition, significant directional anisotropy of stiffness was observed. Composites micromechanics was applied to interpret the orientation and size dependent reinforcement of PNCs and temperature dependent stiffness of the polymer-MNPs structures was quantified. The presence of polymer chains with altered dynamics surrounding the MNPs inside the anisotropic assemblies was proposed to be essential nano-scale mechanism mediating the stress transfer and contributing to mechanical robustness of the hybrid structures and PNCs.
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
10404 - Polymer science
Result continuities
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)
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymer Engineering and Science
ISSN
0032-3888
e-ISSN
1548-2634
Volume of the periodical
60
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
587-596
UT code for WoS article
000504519200001
EID of the result in the Scopus database
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