Format

Send to

Choose Destination
Langmuir. 2013 Aug 20;29(33):10596-602. doi: 10.1021/la401819t. Epub 2013 Aug 6.

Characterization of permeability of electrospun yarns.

Author information

1
Department of Materials Science & Engineering, Clemson University, 161 Sirrine Hall, Clemson, South Carolina 29634, USA.

Abstract

We developed a novel technique enabling determination of the permeability of electrospun yarns composed of hundreds of fibers. Analyzing the wicking kinetics in a yarn-in-a-tube composite conduit, it was found that the kinetic is very specific. The liquid was pulled by the capillary pressure associated with the meniscus in the tube while the main resistance comes from the yarn. Therefore, one can separate the yarn permeability from the capillary pressure, which cannot be done in wicking experiments with single yarns. A surface tensiometer (Cahn) was employed to collect the data on wicking kinetics of hexadecane into the yarn-in-a-tube conduits. Yarns from different polymers and blends were electrospun and characterized using the proposed protocol. We showed that the permeability of electrospun yarns can be varied in a broad range from 10(-14) m(2) to 10(-12) m(2) by changing the fiber diameter and packing density. These results offer new applications of electrospun yarns as flexible micro- and nanofluidic systems.

PMID:
23875644
DOI:
10.1021/la401819t

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center