The effect of short polystyrene brushes grafted from graphene oxide on the behavior of miscible PMMA/SAN blends

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F20%3A00533162" target="_blank" >RIV/61389013:_____/20:00533162 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/20:63526433
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0032386120309137?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0032386120309137?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymer.2020.123088" target="_blank" >10.1016/j.polymer.2020.123088</a>

Result language
angličtina
Original language name
The effect of short polystyrene brushes grafted from graphene oxide on the behavior of miscible PMMA/SAN blends
Original language description
A new concept of utilization of particle-polymer hybrids as multifunctional additives for polymer blends was introduced in this study. Graphene oxide particles with short densely grafted polystyrene brushes (GO-g-PS) were prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). Melt rheology studies revealed that GO-g-PS suppressed the phase separation of miscible poly(methyl methacrylate)/poly(styrene-co-acrylonitrile) (PMMA/SAN) blends. The studies suggested specific interactions of GO-g-PS with the PMMA phase and this was confirmed based on calculations of activation energies of segmental relaxations by broadband dielectric spectroscopy (BDS). These unusual interactions of GO-g-PS with PMMA phase were assigned to the specific and precise architecture of the GO-g-PS particles as well as chemical nature of PS polymer brushes. The short chains of PMMA and PS provide miscibility originating from UCST behavior of PMMA/PS blend of short polymer chains. Additionally, BDS also revealed improved charge transport in PMMA/SAN blend in presence of GO-g-PS hybrid.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10404 - Polymer science

Project
<a href="/en/project/TN01000008" target="_blank" >TN01000008: Center of electron and photonic optics</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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