Open Access System for Information Sharing

Login Library

 

Article
Cited 6 time in webofscience Cited 8 time in scopus
Metadata Downloads

Failure Mechanism of the Polymer Infiltration of Carbon Nanotube Forests SCIE SCOPUS

Title
Failure Mechanism of the Polymer Infiltration of Carbon Nanotube Forests
Authors
PARK, HYUNG GYUBuchheim, Jakob
Date Issued
2016-11-18
Publisher
Institute of Physics Publishing
Abstract
Polymer melt infiltration is one of the feasible methods for manufacturing filter membranes out of carbon nanotubes (CNTs) on large scales. Practically, however, its process suffers from low yields, and the mechanism behind this failure is rather poorly understood. Here, we investigate a failure mechanism of polymer melt infiltration of vertical aligned (VA-) CNTs. In penetrating the VA-CNT interstices, polymer melts exert a capillarity-induced attractive force laterally on CNTs at the moving meniscus, leading to locally agglomerated macroscale bunches. Such a large configurational change can deform and distort individual CNTs so much as to cause buckling or breakdown of the alignment. In view of membrane manufacturing, this irreversible distortion of nanotubes is detrimental, as it could block the transport path of the membranes. The failure mechanism of the polymer melt infiltration is largely attributed to steric hindrance and an energy penalty of confined polymer chains. Euler beam theory and scaling analysis affirm that CNTs with low aspect ratio, thick walls and sparse distribution can maintain their vertical alignment. Our results can enrich a mechanistic understanding of the polymer melt infiltration process and offer guidelines to the facile large-scale manufacturing of the CNT-polymer filter membranes.
URI
https://oasis.postech.ac.kr/handle/2014.oak/98769
DOI
10.1088/0957-4484/27/46/464002
ISSN
0957-4484
Article Type
Article
Citation
Nanotechnology, vol. 27, no. 46, 2016-11-18
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher

박형규PARK, HYUNG GYU
Dept of Mechanical Enginrg
Read more

Views & Downloads

Browse