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Crystallization under one-dimensional confinement in alumina nanopores of poly(trimethylene terephthalate) and its composites with single wall carbon nanotubes.

Martín-Fabiani, I, García-Gutiérrez, MC, Rueda, DR, Linares, A, Hernández, JJ, Ezquerra, TA and Reynolds, M (2013) Crystallization under one-dimensional confinement in alumina nanopores of poly(trimethylene terephthalate) and its composites with single wall carbon nanotubes. ACS Appl Mater Interfaces, 5 (11). pp. 5324-5329.

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Abstract

We report the preparation of semicrystalline polymer nanorods of PTT and of its nanocomposites with SWCNTs by infiltration of the molten polymer into disordered anodic alumina membranes. An accurate study of the crystalline orientation of these systems has been accomplished by means of X-ray microdiffraction. While polymer residual film exhibits isotropic character, edge-on lamellae are formed upon approaching the polymer/membrane interface. This effect might be due to the elongational flow that takes place in the molten state as polymer chains infiltrate the AAO membrane. At the interface, edge-on and flat-on crystalline lamellae coexist as a consequence of the strong interaction between the polymer and the AAO surface. Inside the nanopores, the confined environment induces a kinetic selection of polymer crystals which only allows the growth of crystalline lamellae with its a-axis parallel to that of the pore. In the case of PTT/SWCNT nanocomposites, this effect, in conjunction with the strong interaction between polymer and AAO surface, seems to prevail over the templating effect of the carbon nanotubes and a similar orientation to that of the neat PTT case is observed.

Item Type: Article
Authors :
NameEmailORCID
Martín-Fabiani, IUNSPECIFIEDUNSPECIFIED
García-Gutiérrez, MCUNSPECIFIEDUNSPECIFIED
Rueda, DRUNSPECIFIEDUNSPECIFIED
Linares, AUNSPECIFIEDUNSPECIFIED
Hernández, JJUNSPECIFIEDUNSPECIFIED
Ezquerra, TAUNSPECIFIEDUNSPECIFIED
Reynolds, MUNSPECIFIEDUNSPECIFIED
Date : 12 June 2013
Identification Number : https://doi.org/10.1021/am401194p
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:19
Last Modified : 17 May 2017 13:19
URI: http://epubs.surrey.ac.uk/id/eprint/838745

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