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A platform for research: civil engineering, architecture and urbanism
Polylactide and carbon nanotubes/smectite-clay nanocomposites: Preparation, characterization, sorptive and electrical properties
Abstract In order to prepare polylactide nanocomposites, hybrid fillers were synthesized by direct growth of carbon nanotubes over as-purchased and Na+-exchanged clay catalysts with 15wt.% iron load. The sorptive and electrical behavior of nanocomposites obtained by the incorporation of 1–5wt.% filler was investigated. Results show that polylactide nanocomposites are endowed with increased sorption and outstandingly enhanced conductivity (up to 6 or even 9 orders of magnitude) with respect to the pristine polymer (σ =1·10−10 S/m). The origin of these changes is discussed, and the synergistic action between nanotubes and clay is evidenced.
Graphical Abstract Display Omitted Research Highlights ► Hybrid CNT-clay fillers improve sorptive and electrical properties of PDLLA. ► Increase of water vapor sorption is due to the hydrophilic part (clay) of the filler. ► CNT are responsible for 6–9 orders of magnitude electric conductivity enhancement. ► Clay and CNT exert a synergistic action in upgrading the polymer properties. ► Sodium-exchanged K10 clay allows obtaining better results than as-purchased K10 clay.
Polylactide and carbon nanotubes/smectite-clay nanocomposites: Preparation, characterization, sorptive and electrical properties
Abstract In order to prepare polylactide nanocomposites, hybrid fillers were synthesized by direct growth of carbon nanotubes over as-purchased and Na+-exchanged clay catalysts with 15wt.% iron load. The sorptive and electrical behavior of nanocomposites obtained by the incorporation of 1–5wt.% filler was investigated. Results show that polylactide nanocomposites are endowed with increased sorption and outstandingly enhanced conductivity (up to 6 or even 9 orders of magnitude) with respect to the pristine polymer (σ =1·10−10 S/m). The origin of these changes is discussed, and the synergistic action between nanotubes and clay is evidenced.
Graphical Abstract Display Omitted Research Highlights ► Hybrid CNT-clay fillers improve sorptive and electrical properties of PDLLA. ► Increase of water vapor sorption is due to the hydrophilic part (clay) of the filler. ► CNT are responsible for 6–9 orders of magnitude electric conductivity enhancement. ► Clay and CNT exert a synergistic action in upgrading the polymer properties. ► Sodium-exchanged K10 clay allows obtaining better results than as-purchased K10 clay.
Polylactide and carbon nanotubes/smectite-clay nanocomposites: Preparation, characterization, sorptive and electrical properties
Santangelo, Saveria (author) / Gorrasi, Giuliana (author) / Di Lieto, Roberta (author) / De Pasquale, Salvatore (author) / Patimo, Giovanni (author) / Piperopoulos, Elpida (author) / Lanza, Maurizio (author) / Faggio, Giuliana (author) / Mauriello, Francesco (author) / Messina, Giacomo (author)
Applied Clay Science ; 53 ; 188-194
2010-12-07
7 pages
Article (Journal)
Electronic Resource
English
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