Effect of o-MMT content on properties of Poly (vinyl chloride)/Poly (acrylonitrile styrene acrylate) blends

Year 2020, Volume: 7 Issue: 3, 635 - 648, 30.10.2020

Yunus Emre Kökçan Yasemin Tamer

https://doi.org/10.18596/jotcsa.635095

Cited By: 2

Abstract

In this study, poly(vinyl chloride) (PVC)/poly(acrylonitrile styrene acrylate)
(ASA)/ organophilic montmorillonite (o-MMT) nanocomposites were prepared and
the effects of o-MMT content on the properties of PVC/ASA blends were
investigated. Surface morphology studies of the o-MMT
containing blends were also performed using scanning electron microscopy (SEM).
The thermal stability, mechanical properties and water
absorption percentage of the nanocomposites were studied. TGA test results showed that o-MMT inclusion enhanced the thermal stability of
PVC/ASA/o-MMT nanocomposites and the Td₅₀ decomposition temperature
increased by 7.5 ˚C
when the o-MMT content is 10 wt%. The tensile strength value of the neat blend was
obtained as 32.51 MPa and found to increase as 36.01 MPa when the o-MMT content
is 6 wt% in the system. The water absorption test results demonstrated that the
water-resistance of the samples enhanced as the o-MMT content increased. Moreover,
PVC/ASA blends experienced a significant increase in the contact angle by the
presence of hydrophobic o-MMT. The weathering test results demonstrate that the
PVC/ASA/o-MMT nanocomposite films can be used for outdoor applications without
losing their properties too much.

Keywords

PVC/ASA blend, o-MMT, nanocomposite, weathering test

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