Ionomers (polymers containing a small amount of ionic groups) are used for various current technologies, such as hydrogen fuel cells, sensors, water purifications, and drug delivery. In addition, ionomers are widely used for solution studies due to their unique behavior and potential application to processing from solution (e.g., membrane fabrication). Recently, ionic liquid was found to be an effective additive (to a low-polarity solvent) to dissolve ionomers, which will be used for processing ionomer films and fibers. Despite the usefulness of the solution study, ionomers used so far are random ionomers in which ionic groups are randomly distributed along the polymer chain and thus data analysis and model calculation become complex. In this study, a monofunctional telechelic ionomer that had an ionic group only at one chain end was used. This made analysis easier and simpler. In this work, viscosity and dynamic light scattering were used to study the effect of ionic liquid on the telechelic ionomers in nonpolar solvent, toluene. In nonpolar solvent, ionic groups formed ion pairs which were attracted each other to form ionic aggregates, resulting in molecular aggregate formation. This was confirmed by an increase in reduced viscosity and effective (hydrodynamic) diameter of the telechelic ionomer solutions. Upon addition of ionic liquid, 1-ethyl-3-methylimidazolium trifluoromethane sulfonate (EMIM-TF), ionic aggregates were disrupted and the size of molecular aggregates was decreased, approaching to that of nonionic polymer of the same molecular weight.
Subject (authority = RUETD)
Topic
Chemical and Biochemical Engineering
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_8668
PhysicalDescription
Form (authority = gmd)
electronic resource
InternetMediaType
application/pdf
InternetMediaType
text/xml
Extent
1 online resource (viii, 29 p. : ill.)
Note (type = degree)
M.S.
Note (type = bibliography)
Includes bibliographical references
Subject (authority = ETD-LCSH)
Topic
Ionic solutions
Subject (authority = ETD-LCSH)
Topic
Viscosity
Note (type = statement of responsibility)
by Lizhuo Song
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
PhysicalLocation (authority = marcorg); (displayLabel = Rutgers, The State University of New Jersey)
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.