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An Aqueous-Based Approach for Fabrication of PVDF/MWCNT Porous Composites.

Abstract：

:In this paper, we demonstrate the fabrication of conductive porous polymers based on foaming of an aqueous dispersion of polymeric particles and multi-walled carbon nanotubes (CNT). By tuning the surface energy of the constituents, we direct their preferential adsorption at the air-liquid (bubble) interface or within the liquid film between the bubbles. Sintering this bi-constituent foam yields solid closed-cell porous structure which can be electrically conductive if CNT are able to form a conductive path. We measure transport (electrical and thermal), mechanical, and morphological properties of such porous structures as a function of CNT loading and the method used for their surface functionalization. For a fixed polymer volume fraction, we demonstrate the limit in which increasing CNT results in decreasing the mechanical strength of the sample due to lack of adequate polymer-CNT bond. Such lightweight conductive porous composites are considered in applications including EMI shielding, electrostatic discharge protection, and electrets.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Rezvantalab H,Ghazi N,Ambrusch MJ,Infante J,Shojaei-Zadeh S

doi

10.1038/s41598-017-01770-9

subject

Has Abstract

pub_date

2017-05-11 00:00:00

pages

1716

issue

1

issn

2045-2322

pii

10.1038/s41598-017-01770-9

journal_volume

7

pub_type

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