Abstract
The surface properties of polyetherimide (PEI) hyperbranched polymers (HBPs) are tunable over a broad range of surface energies by proper functionalization of their end-groups. In turn, our data indicate that the surface segregation of PEI HBPs in blends with polystyrne (PS) is primarily determined by the differences in their surface energies. Therefore, HBPs with higher surface energies than that of PS segregate near the substrates, while HBPs with lower surface energies tend to concentrate near the air interface of thin films. The stability (wettability) of low molecular weight PS thin films on a silicon substrate was improved by the addition of high surface energy PEI HBPs.
Original language | English (US) |
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Pages (from-to) | 9985-9989 |
Number of pages | 5 |
Journal | Langmuir |
Volume | 18 |
Issue number | 25 |
DOIs | |
State | Published - Dec 10 2002 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry