LEPCIO, Petr, František ONDREÁŠ, Klára ZÁRYBNICKÁ, Marek ZBONČÁK, Ondřej CAHA a Josef JANČÁŘ. Bulk polymer nanocomposites with preparation protocol governed nanostructure: the origin and properties of aggregates and polymer bound clusters. SOFT MATTER. CAMBRIDGE: ROYAL SOC CHEMISTRY, roč. 14, č. 11, s. 2094-2103. ISSN 1744-683X. doi:10.1039/c8sm00150b. 2018.
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Základní údaje
Originální název Bulk polymer nanocomposites with preparation protocol governed nanostructure: the origin and properties of aggregates and polymer bound clusters
Autoři LEPCIO, Petr (703 Slovensko), František ONDREÁŠ (703 Slovensko), Klára ZÁRYBNICKÁ (203 Česká republika), Marek ZBONČÁK (703 Slovensko), Ondřej CAHA (203 Česká republika, garant, domácí) a Josef JANČÁŘ (203 Česká republika).
Vydání SOFT MATTER, CAMBRIDGE, ROYAL SOC CHEMISTRY, 2018, 1744-683X.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10404 Polymer science
Stát vydavatele Velká Británie a Severní Irsko
Utajení není předmětem státního či obchodního tajemství
Impakt faktor Impact factor: 3.399
Kód RIV RIV/00216224:14310/18:00104788
Organizační jednotka Přírodovědecká fakulta
Doi http://dx.doi.org/10.1039/c8sm00150b
UT WoS 000428224500013
Klíčová slova anglicky PARTICLE-SIZE; SPHERICAL NANOPARTICLES; GRAFTED NANOPARTICLES; MECHANICAL-PROPERTIES; DISPERSION; FILLER; TEMPERATURE; MODEL; FILMS; PMMA
Štítky rivok
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: Mgr. Ondřej Caha, Ph.D., učo 4414. Změněno: 4. 12. 2018 16:50.
Anotace
Polymer nanocomposites (PNCs) hold great promise as future lightweight functional materials processable by additive manufacturing technologies. However, their rapid deployment is hindered by their performance depending strongly on the nanoparticle (NP) spatial organization. Therefore, the ability to control nanoparticle dispersion in the process of PNC preparation is a crucial prerequisite for utilizing their potential in functional composites. We report on the bulk processing technique of tailored NP spatial organization in a model glass forming polymer matrix controlled by structural and kinetic variables of the preparation protocol. Namely, we studied the impact of solvent on the NP arrangement, which was already known as a tuning parameter of the solid-state structure. We emphasized the qualitative differences between "poorly dispersed'' NP arrays, which, by combination of rheological assessment and structural analysis (TEM, USAXS), we identified as chain bound clusters and aggregates of either thermodynamic or kinetical origin. They are characterized by substantially distinct formation kinetics and mismatched properties compared to each other and individually dispersed NPs. We quantitatively linked all the currently observed types of NP dispersion with their rheological properties during the solution blending step and the amount of polymer adsorption and depletion attraction. We propose the ratio of NP-polymer and NP-solvent enthalpy of adsorption as a parameter capable of the quantitative prediction of NP arrangement in systems similar to our current model PNC. Finally, we bring forth the comparison of glass transition temperatures to further demonstrate the importance of NP spatial organization in PNCs.
Návaznosti
LM2015041, projekt VaVNázev: CEITEC Nano
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC Nano
VytisknoutZobrazeno: 28. 3. 2024 11:52