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Issue 4, 2016
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Quantifying the synergistic effect of dispersion state and interfacial adhesion contributions on impact strength of core shell rubber-toughened glassy polymers

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Abstract

Artificially made aggregates of core–shell rubber (CSR) nano-particles were latex blended with an emulsion-grade poly(vinyl chloride) (PVC), cast, dried, sintered, and annealed into soft nano-composites. The agglomeration of CSR aggregates and their interfacial adhesion evolution through thermal annealing resulted in temperature-dependent impact strength increase to a maximum, followed by its decrease. Surprisingly, the observed maxima at different annealing temperatures appeared at constant coagulant content to form the aggregates. In addition, the impact strengths of all samples showed a universal linear correlation with the annealing temperature and matrix glass transition disparity, ΔT, over the absolute average size differentiation between the agglomerated CSRs and the matrix primary particles, |ΔD|. The contribution of dispersion state, interfacial adhesion and their interplay was quantified by |ΔD|, ΔT and |ΔTD| representing 2, 20 and 39 fold impact strength improvement, respectively. The synergistically enhanced impact strength was nicely reflected in a theoretical interlayer model prediction implying double loading of the feed CSR particles.

Graphical abstract: Quantifying the synergistic effect of dispersion state and interfacial adhesion contributions on impact strength of core shell rubber-toughened glassy polymers

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Publication details

The article was received on 04 Nov 2015, accepted on 16 Dec 2015 and first published on 21 Dec 2015


Article type: Paper
DOI: 10.1039/C5RA23206F
Citation: RSC Adv., 2016,6, 3377-3385
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    Quantifying the synergistic effect of dispersion state and interfacial adhesion contributions on impact strength of core shell rubber-toughened glassy polymers

    Z. Khoubi-Arani, N. Mohammadi, M. R. Moghbeli and P. Pötschke, RSC Adv., 2016, 6, 3377
    DOI: 10.1039/C5RA23206F

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