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Absorption-induced Deformations of Nanofiber Yarns and Nanofibrous Webs

Published online by Cambridge University Press:  01 February 2011

Daria Monaenkova ,
Taras Andrukh  and
Kostya Kornev
Daria Monaenkova
Affiliation:
[email protected], Clemson University, MS&E, Clemson, South Carolina, United States
Taras Andrukh
Affiliation:
[email protected], Clemson University, MS&E, Clemson, South Carolina, United States
Kostya Kornev
Affiliation:
[email protected], United States
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Abstract

Current advances in manufacturing of nanotubular and nanofibrous materials with high surface- to - volume ratios call for the development of adequate characterization methods and predictive estimates of the materials absorption capacity. Extremely high flexibility of these materials poses a challenge: their pore structure easily changes upon contact with the fluid in question. One more complication is that the absorption process is sufficiently fast: one hundred micron droplets disappear in milliseconds. This paper sets a physical basis for analyses of absorption processes in nanotubular and nanofibrous materials. As an example, we study absorption of droplets by yarns made of nanofibers and nanofibrous webs. We show that absorption can induce different types of deformations: visible deformations of the yarn profile and deformations of the yarn diameter/length caused by the capillary forces. Using experimental data and theory, we estimate elastic and transport characteristics of the nanofibrous materials. The reported experiments and proposed theory open a new area of research on absorption-induced deformations of nanotubular and nanofibrous materials and show their potential applications as sensors to probe minute amount of absorbable liquids.

Keywords

absorptionnanoscalesimulation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1129: Symposium V – Materials and Devices for Smart Systems III , 2008 , 1129-V05-05
Copyright
Copyright © Materials Research Society 2009

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References

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