PMMA/SAN Blends with Graphene Oxide Polymer Hybrids – Investigation of Compatibility by Melt Rheology

Kód výsledku v IS VaVaI

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RIV/70883521:28610/19:63524213

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

PMMA/SAN Blends with Graphene Oxide Polymer Hybrids – Investigation of Compatibility by Melt Rheology

Popis výsledku v původním jazyce

Polymer blending enables to prepare materials with properties that are hardly to achieve with parent homopolymers themselves. However due to high surface tension between the polymers at the interphase the materials are not stable, that manifest in loss of mechanical properties, and loss of transparency of final materials in time [1]. To diminish these drawbacks, the compatibilisers are commonly used. The new challenge is to use the hybrid particles that would act as compatibilisers. The utilization of particles brings the additional properties such as electrical, magnetic, mechanical properties according to the particle nature. In our work we introduce the concept of using polymer brushes tethered on the graphene oxide. Polymer chains are grafted from GO surface using surface-initiated atom transfer radical polymerization (SI-ATRP). SI-ATRP is a versatile method that allows designing the molecular architecture of polymer chains [3]. Moreover, as was reported recently in our laboratory, it enables the control of electrical conductivity of GO as well [4]. Herein, the poly(methyl methacrylate) brushes were grafted from GO surface (GO-g-PMMA) and used as compatibilisers of poly(methyl methacrylate)/poly(styrene-coacrylonitrile) (PMMA/SAN) blend. The effects of polymer brushes on the viscoelastic properties of the blends were revealed. The frequency dependence of η&quot; versus η &apos; was plotted and the relaxation times were calculated by using Cole-Cole model. The polymer brushes enhanced the relaxation times compared to PMMA/SAN blend and PMMA/SAN blend with neat GO significantly.

Název v anglickém jazyce

PMMA/SAN Blends with Graphene Oxide Polymer Hybrids – Investigation of Compatibility by Melt Rheology

Popis výsledku anglicky

Polymer blending enables to prepare materials with properties that are hardly to achieve with parent homopolymers themselves. However due to high surface tension between the polymers at the interphase the materials are not stable, that manifest in loss of mechanical properties, and loss of transparency of final materials in time [1]. To diminish these drawbacks, the compatibilisers are commonly used. The new challenge is to use the hybrid particles that would act as compatibilisers. The utilization of particles brings the additional properties such as electrical, magnetic, mechanical properties according to the particle nature. In our work we introduce the concept of using polymer brushes tethered on the graphene oxide. Polymer chains are grafted from GO surface using surface-initiated atom transfer radical polymerization (SI-ATRP). SI-ATRP is a versatile method that allows designing the molecular architecture of polymer chains [3]. Moreover, as was reported recently in our laboratory, it enables the control of electrical conductivity of GO as well [4]. Herein, the poly(methyl methacrylate) brushes were grafted from GO surface (GO-g-PMMA) and used as compatibilisers of poly(methyl methacrylate)/poly(styrene-coacrylonitrile) (PMMA/SAN) blend. The effects of polymer brushes on the viscoelastic properties of the blends were revealed. The frequency dependence of η&quot; versus η &apos; was plotted and the relaxation times were calculated by using Cole-Cole model. The polymer brushes enhanced the relaxation times compared to PMMA/SAN blend and PMMA/SAN blend with neat GO significantly.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10404 - Polymer science

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů