J 2018

Bulk polymer nanocomposites with preparation protocol governed nanostructure: the origin and properties of aggregates and polymer bound clusters

LEPCIO, Petr, František ONDREÁŠ, Klára ZÁRYBNICKÁ, Marek ZBONČÁK, Ondřej CAHA et. al.

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

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

Odkazy

Impakt faktor

Impact factor: 3.399

Kód RIV

RIV/00216224:14310/18:00104788

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000428224500013

Klíčová slova anglicky

PARTICLE-SIZE; SPHERICAL NANOPARTICLES; GRAFTED NANOPARTICLES; MECHANICAL-PROPERTIES; DISPERSION; FILLER; TEMPERATURE; MODEL; FILMS; PMMA

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 23. 4. 2024 12:44, Mgr. Michal Petr

Anotace

V originále

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 VaV
Název: CEITEC Nano
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC Nano