Polyisobutylene Oligomers as Tools for Iron Oxide Nanoparticle Solubilization

Chih Gang Chao, Manyam Praveen Kumar, Nadia Riaz, Raquel T. Khanoyan, Sherzod Madrahimov, David E. Bergbreiter

Research output: Contribution to journalArticle

10 Citations (Scopus)


A series of terminally functionalized polyisobutylene (PIB) derivatives were synthesized and tested as agents for magnetic nanoparticle solubilization. PIB-bound catechol was found to be the best functionalized polyolefin at effecting such solubilization based on UV-vis spectroscopic absorbance measurements and thermogravimetric analysis. The PIB-modified magnetic nanoparticles obtained from grafting reactions contain up to 32 wt % of MNPs. They easily disperse in nonpolar and modestly polar organic solvents. The high loading (>50 wt %) of the PIB-modified magnetic nanoparticles even in alkane solvents makes the resulting solutions magnetically susceptible. This was illustrated by preliminary work where PIB-modified MNPs formed solutions with heptane that could be magnetically separated from water. These PIB-modified magnetic nanoparticles were also shown to be highly soluble in low melting polyethylene waxes and in liquid poly(α-olefin)s.

Original languageEnglish
Pages (from-to)1494-1502
Number of pages9
Issue number4
Publication statusPublished - 28 Feb 2017


ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Chao, C. G., Kumar, M. P., Riaz, N., Khanoyan, R. T., Madrahimov, S., & Bergbreiter, D. E. (2017). Polyisobutylene Oligomers as Tools for Iron Oxide Nanoparticle Solubilization. Macromolecules, 50(4), 1494-1502. https://doi.org/10.1021/acs.macromol.6b02407