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Polymer Bulletin
Published in: Polymer Bulletin 2/2018

10-05-2017 | Original Paper

The effects of styrenic oligomers on the thermomechanical properties of toughened polystyrene nanocomposites

Authors: César Pedrini Neto, Eveline Bischoff, Kelly S. Santos, Ricardo V. B. Oliveira, Raquel. S. Mauler

Published in: Polymer Bulletin | Issue 2/2018

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Abstract

Polystyrene (PS) properties are usually tuned with the addition of elastomers and fillers to broaden the application range. However, toughening and increased tensile strength are difficult to achieve simultaneously, requiring a well-controlled particle size and distribution, as well as a good degree of intercalation and exfoliation. Therefore, the effect of the addition of a PS oligomer (PSo) to the polystyrene nanocomposite toughened with grafted Styrene–Butadiene–Styrene by maleic anhydride (SEBS-g-MA) was studied. Changes were observed in the diffractogram patterns of the nanocomposites, and a better distribution with lower alignment of the layered silicates by TEM microscopy at the presence of PSo. The storage modulus (at 25 °C) of the toughened nanocomposite increased approximately 12% when the oligomer was added. This result shows great potential to overcome the strong reduction (42%) when an elastomer is used in a PS blend. Also, increase in thermal degradation (35 °C) and impact strength (166%) were obtained.
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Metadata
Title
The effects of styrenic oligomers on the thermomechanical properties of toughened polystyrene nanocomposites
Authors
César Pedrini Neto
Eveline Bischoff
Kelly S. Santos
Ricardo V. B. Oliveira
Raquel. S. Mauler
Publication date
10-05-2017
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 2/2018
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-017-2053-8

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