Hydrophobically Modified Polyelectrolyte for Improved Oxygen Barrier in Nanobrick Wall Multilayer Thin Films Academic Article uri icon


  • ABSTRACTThe influence of attaching hydrophobic side groups to a polyelectrolyte, used for deposition of a multilayer oxygen gas barrier thin film, was investigated. Polyethyleneimine (PEI) was labeled with pyrene and deposited in quadlayers of PEI, poly(acrylic acid), PEI, and sodium montmorillonite clay using layerbylayer assembly. Thin films made of three repeating quadlayers using unmodified PEI had much lower density (1.24 g/cm3) than pyrenelabeled PEIbased films (1.45 g/cm3), which is believed to be the result of greater chain coiling from the increased hydrophobicity of pendant pyrene groups. This increased density in pyrenelabeled PEI layers allowed three quadlayers to match the oxygen transmission rate of a four quadlayer film made with unmodified PEI. This discovery provides an additional tool for tailoring the barrier behavior of claybased multilayer thin films that could prove useful for a variety of packaging applications. 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2014, 52, 11531156

published proceedings


altmetric score

  • 0.5

author list (cited authors)

  • Stevens, B. E., Odenborg, P. K., Priolo, M. A., & Grunlan, J. C.

citation count

  • 10

complete list of authors

  • Stevens, Bart E||Odenborg, Patrick K||Priolo, Morgan A||Grunlan, Jaime C

publication date

  • September 2014