NMR Studies of Micro-Structured and Nano-Structured Polymeric Membrane Systems

Abstract

This report describes our achievement in the investigation of the influence of structure on diffusion in styrene-ethylene/ butylene-styrene triblock copolymers (SEBS) during the period of June 1, 2006 to November 30, 2006. This type of triblock copolymers has the potential for chemical protection and fuel cell application. Our progress is made in the following fields: (I) Pulse-field- gradient (PFG) Nuclear Magnetic Resonance (NMR) study of the translational diffusion; (II) lattice model simulation of diffusion. From the study, it shows that the copolymer structure and the extent of sulfonation of SEBS have significant influence on penetrant diffusion and sulfonated SEBS (sSEBS) may have a good selectivity for water over DMMP depending on the SEBS structure.

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Document Details

Document Type
Technical Report
Publication Date
Feb 27, 2007
Accession Number
ADA471029

Entities

People

  • Guoxing Lin

Organizations

  • Clark University

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Alkenes
  • Block Copolymers
  • Chemistry
  • Copolymers
  • Diffusion
  • Diffusion Coefficient
  • Fuel Cells
  • Grain Boundaries
  • Grain Size
  • Macromolecules
  • Magnetic Resonance
  • Membranes
  • Molecules
  • Nuclear Magnetic Resonance
  • Polymers
  • Resonance
  • Simulations

Readers

  • Combustion science or combustion engineering.
  • Microbial Pathology
  • Polymer Science and Engineering.

Technology Areas

  • Biotechnology
  • Microelectronics