OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy

| PUBLISHED BY SAS — AVAILABLE FROM SAS AND OSA

  • Vol. 50, Iss. 11 — Nov. 1, 1996
  • pp: 1402–1407

Characterization of a Polypropylene/Super-Absorbent Web by NMR Diffusion Studies

Lei Zeng and E. O. Stejskal

Applied Spectroscopy, Vol. 50, Issue 11, pp. 1402-1407 (1996)


View Full Text Article

Acrobat PDF (420 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

Super-absorbent fiber has the property of absorbing moisture up to several thousand times its original weight, undergoing significant expansion, and eventually becoming a gel. The hydrophilic super-absorbent fiber is usually blended with hydrophobic polymer fiber to form a polymer web with the ability to attract fluid and also to hold it under pressure. Because of the confining influence of pore boundaries on molecular translation, restricted diffusion measurements on fluids in porous systems, such as the super-absorbent web, contain important information about the pore morphology. In this work, we studied the diffusion of water in a web of super-absorbent polyacrylate and polypropylene fiber. We observed restricted diffusion of the water by means of the pulsed-field-gradient spin-echo (PFGSE) NMR technique. Several mathematical models were used to interpret the data and yield estimates of the gross pore dimensions and the surface-to-volume ratio of the pores.

Citation
Lei Zeng and E. O. Stejskal, "Characterization of a Polypropylene/Super-Absorbent Web by NMR Diffusion Studies," Appl. Spectrosc. 50, 1402-1407 (1996)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-50-11-1402

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited