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Authors
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Khoubi-Arani, Z. ; Mohammadi, N. ; Moghbeli, M. R. ; Pötschke, P.
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Title
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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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Date
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08.02.2016
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Number
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47966
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Abstract
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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, ·T, over the absolute average size differentiation between the agglomerated CSRs and the matrix primary particles, |·D|. The contribution of dispersion state, interfacial adhesion and their interplay was quantified by |·D|, ·T and |·T/·D| 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.
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Publisher
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RSC Advances
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Wikidata
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Citation
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RSC Advances 6 (2016) 3377-3385
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DOI
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https://doi.org/10.1039/C5RA23206F
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