Abstract
Polyethylene-bromine (PE-Br) was modified by nucleophilic substitution reactions with aromatic thiolate compounds. The amount of replacement was examined in terms of S/C mole ratio using X-ray photoelectron spectroscopy. The stronger the electron donating in the substituent group on thiolate anion, the higher the amount of substitution reaction at the PE-Br surface. The S/C ratio is the largest for PE-S-Ph-NH2 due to the enhancing nucleophilicity of thiolate anion by the amino group. The ratio in PE-S-Ph-COOH is the smallest because of the electron-withdrawing character of the COOH group. However, the film revealed an improvement in wettability, due to high hydrophilicity.
Original language | English |
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Pages (from-to) | 3557-3560 |
Number of pages | 4 |
Journal | Langmuir |
Volume | 16 |
Issue number | 7 |
DOIs | |
State | Published - 4 Apr 2000 |
Externally published | Yes |