Magnetic Resonance Imaging (MRI) of water diffusion in 2-Hydroxyethyl Methacrylate (HEMA) gels

Guy Raguin, Cibele V. Falkenberg, Shaurya Prakash, Heather R. FitzHenry, Glennys Mensing, Luisa Ciobanu, John G. Georgiadis, Mark A. Shannon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A fundamental study focusing on correlating the local water self-diffusion coefficient to the local free water content in 2-hydroxyethyl methacrylate (HEMA) gels was conducted. HEMA gels were synthesized with different nominal water content (50% to 90%). MRI measurements of local diffusion coefficient distribution and local water content profiles were conducted on a 600 MHz scanner. The local water content was measured via two spin-echo images with sufficiently long repetition time (TR) to eliminate T1-weighting and two values for the echo time (TE) in order to account for T2-weighting. The local diffusion coefficient was determined using a standard pulsed-field gradient spin-echo sequence. The measured local water content and diffusion coefficient data were compared with several single-parameter diffusion models for interstitial diffusion in the hydrogel (Makie-Meares, Stokes-Einstein, and Brownian motion around overlapping spheres).

Original languageEnglish (US)
Title of host publicationMaterials Science of Water Purification
PublisherMaterials Research Society
Pages47-52
Number of pages6
ISBN (Print)155899887X, 9781558998872
DOIs
StatePublished - 2006
Event2006 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 17 2006Apr 21 2006

Publication series

NameMaterials Research Society Symposium Proceedings
Volume930
ISSN (Print)0272-9172

Other

Other2006 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/17/064/21/06

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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