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Authors
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Jaeger, S. ; Zawadzki, S. F. ; Leuteritz, A. ; Wypych, F.
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Title
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New alternative to produce colored polymer nanocomposites: Organophilic Ni/Al and Co/Al layered double hydroxide as fillers into low-density polyethylene
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Date
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19.09.2017
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Number
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53745
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Abstract
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Green (Ni2+/Al3+) and pink (Co2+/Al3+) layered double hydroxides (LDH) (molar ratio of 3:1) were intercalated with several organic anions and used as functional colored fillers into low density polyethylene (LDPE) by melt mixing in amounts of 0.2 to 7 wt.%. Scanning electron microscopic (SEM) results of LDPE nanocomposites indicated that with low percentage of filler, all the LDH samples showed efficient delamination/exfoliation in the polymer matrix. Fillers added to LDPE with concentrations of 0.2, 0.5, 2 and 5% presented, in general, maintenance of Youngs modulus and tensile strength, tending to the reduction with a loading of 7%. Most of the nanocomposites presented similar elongations, although NiUS stood out, with an elongation increase of 300%. Differential scanning calorimetry (DSC) indicated the effect of the Co/Al-LDH in inducing the formation of LDPE crystalline domains, especially at higher temperature than neat LDPE.
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Publisher
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Journal of the Brazilian Chemical Society
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Wikidata
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Citation
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Journal of the Brazilian Chemical Society (2017) 1-11
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DOI
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https://doi.org/10.21577/0103-5053.20170093
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Tags
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colored layered double hydroxides polymer-matrix composites intercalation
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