Effect of Nanoparticle Organization on Molecular Mobility and Mechanical Properties of Polymer Nanocomposites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F19%3APU133233" target="_blank" >RIV/00216305:26620/19:PU133233 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acs.macromol.9b01197" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.macromol.9b01197</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.macromol.9b01197" target="_blank" >10.1021/acs.macromol.9b01197</a>
Alternative languages
Result language
angličtina
Original language name
Effect of Nanoparticle Organization on Molecular Mobility and Mechanical Properties of Polymer Nanocomposites
Original language description
Influence of nanoparticle (NP) spatial organization on relaxation and mechanical properties of polymer nanocomposites (PNCs) was investigated. For the first time, the properties of PNCs with various nanostructures at the constant chemical composition were related to their experimentally determined structural parameters—effective interfacial surface and interparticle distance. Segmental scale reinforcement active below and above glass transition was attributed to the immobilization and frustration of polymer segments caused by attractive polymer–particle interactions. A novel reinforcing mechanism of chain bound clusters related to their internal structure was revealed while negligible reinforcement from NP–NP interactions of contact aggregates was found. The mechanical response of PNCs was correlated with appropriate relaxation properties. It provided the first experimental proof that deformation yielding dynamics of PNCs is controlled by glass transition segmental mobility. Main features of various NP spatial organizations were characterized. Chain bound clusters showed the most significant reinforcement above the glass transition temperature (Tg). Moreover, the hierarchical nature of chain bound clusters caused broadening of the ductile response compared to other nanostructures and also to the neat matrix. The most pronounced enhancement of elastic modulus, yield stress, and creep durability was found for individually dispersed NPs. The acquired nanostructure–property relationships will provide a foundation for the future design of hierarchic and multidomain nanocomposites.
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
<a href="/en/project/GA18-17540S" target="_blank" >GA18-17540S: Low density functional nano-composites</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
MACROMOLECULES
ISSN
0024-9297
e-ISSN
1520-5835
Volume of the periodical
52
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
6250-6259
UT code for WoS article
000483437500022
EID of the result in the Scopus database
2-s2.0-85071677391