Abstract
Infrared spectroscopy was employed, in the mode of attenuated total reflection (ATR), to measure PS adsorption to the native surface of a silicon infrared prism. Infrared spectra were collected, and the silicon ATR prism was prepared using methods described previously. The temperature of measurement was 30.0°C, which is the Θ temperature, Tθ, for deuteropolystyrene (PS-d) in cyclohexane.6 For protiopolystyrene (PS-h) in cyclohexane, Tθ = 34.5°C,6, so that PS-d at 30°C finds itself in a slightly better solvent than does PS-h. Calibrations showed that Beer's law held to a good approximation for these films of low adsorbance as expected,7 and that the PS free in solution (0.2 mg·mL-1) contributed only approximately 1% to the measured PS absorption peaks. At this solution concentration, PS-d and PS-h are completely miscible.
Original language | English (US) |
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Pages (from-to) | 685-687 |
Number of pages | 3 |
Journal | Macromolecules |
Volume | 23 |
Issue number | 2 |
DOIs | |
State | Published - 1990 |
Externally published | Yes |
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
- Inorganic Chemistry
- Materials Chemistry