Application of silane grafted titanate nanotubes in reinforcing of polyamide 11 composites
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Pontón, Patricia I.
Costa, Antonio Mario Leal Martins
Marinković, Bojan A.
Rizzo, Fernando C.
Article (Published version)
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Polyamide 11 (PA11) composites reinforced with pristine and silanized titanate nanotubes (TTNT) were prepared using twin-screw melt compounding. A better dispersion of silanized TTNT in PA11 caused increase of crystallinity and decrease of the long period of PA11 lamellar structure. The increase of glass transition (∼33%) and decomposition temperature (∼3%), as well as, the improvement of Young's, storage and loss modulus (of 17, 27 and 17% respectively) was achieved in the composites loaded with the highest content (2 wt%) of nanofiller silanized by 3-aminopropyltriethoxysilane (APTES), owning to a chemical interaction established at the silanized TTNT-PA11 interface. Contrary to it, lack of compatibility at the pristine TTNT-PA11 interface led to drop (up to 20%) in the strength at break in these composites.
Keywords:polymer-matrix composites / mechanical properties / thermal properties / injection moulding
Source:Composites Part B: Engineering, 2016, 93, 153-162
- Foundation for Research Support of the State of Rio de Janeiro, Brazil, Grant no. E-26/100.055/2014
- National Council for Scientific and Technological Development, Brazil, Research productivity Grant