The effect of polypropylene-graft-maleic anhydride on the morphology and dynamic mechanical properties of polypropylene/polystyrene blends

Parameswaranpillai, Jyotishkumar, Joseph, George, Chellappan, Resmi Veliyath, Zahakariah, Ajesh K and Hameed, Nishar 2015, The effect of polypropylene-graft-maleic anhydride on the morphology and dynamic mechanical properties of polypropylene/polystyrene blends, Journal of polymer research, vol. 22, no. 2, pp. 1-11, doi: 10.1007/s10965-014-0641-y.

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Title The effect of polypropylene-graft-maleic anhydride on the morphology and dynamic mechanical properties of polypropylene/polystyrene blends
Author(s) Parameswaranpillai, Jyotishkumar
Joseph, George
Chellappan, Resmi Veliyath
Zahakariah, Ajesh K
Hameed, Nishar
Journal name Journal of polymer research
Volume number 22
Issue number 2
Start page 1
End page 11
Total pages 11
Publisher Springer
Place of publication Berlin, Gemany
Publication date 2015-01-22
ISSN 1022-9760
Keyword(s) Polymer blends
Phase separation
Compatibility
Glass transition temperature
Morphology
Summary Polypropylene (PP) and polystyrene (PS) blends were prepared by melt processing in a haake at 180 °C. PP/PS blends are immiscible and the blend morphologies were characterized by scanning electron microscopy. The viscoelastic properties were characterized using dynamic mechanical analysis (DMA) with reference to blend ratio. The blend morphologies such as matrix droplet and phase inverted morphologies were observed. The storage modulus of the blends increased with increase in PS content and the value was maximum for neat PS. DMA showed changes in the polystyrene glass transition temperatures (Tg) over the entire composition range. There was a sharp increase in the Tg of PS with increasing PP content in the blend and a 12 °C elevation in Tg was observed. The increase in Tg was explained by proposing a new model based on the physical interaction between the blend components. It is assumed that the different effects by the PP phase resulted in the formation of constrained PS chains leading to high Tg values. The addition of PP-g-MAH has a positive effect on the morphology, increases the storage modulus, and decreases the Tg till 80/20 blends. However, for PP/PS blends with higher concentrations of PS, the PP-g-MAH has little effect or adverse effect on the morphology, and storage modulus, but decreases the Tg.
Language eng
DOI 10.1007/s10965-014-0641-y
Field of Research 0912 Materials Engineering
091209 Polymers and Plastics
091202 Composite and Hybrid Materials
Socio Economic Objective 860606 Plastics in Primary Forms
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074006

Document type: Journal Article
Collection: Institute for Frontier Materials
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