摘要
The interactions of sulfonated polystyrene (SPS) and cetyl trimethylammonium bromide (CTAB) have been investigated with methyl orange (MO) as spectral probe. The increasing of the solution viscosity is related closely with the presence of hydrophobic domain, which forms through the interaction between the polymer chains and CTAB molecules. The viscosity of the solution reaches two maximums at the molar ratio of CTAB:SPS [-SO 3Na unit]=～0.5 and ～1.5, which are consistent well with two hydrophobic domains appearing in solution at the same ratios. In the case of higher concentration of SPS(>0.04?mol/L), at a specific ratio of CTAB/SPS, the solution will convert to a gel due to crosslinking formed from the aggregation of CTAB molecules in micelles with SPS polymer chains.
The interactions of sulfonated polystyrene (SPS) and cetyl trimethylammonium bromide (CTAB) have been investigated with methyl orange (MO) as spectral probe. The increasing of the solution viscosity is related closely with the presence of hydrophobic domain, which forms through the interaction between the polymer chains and CTAB molecules. The viscosity of the solution reaches two maximums at the molar ratio of CTAB:SPS [-SO 3Na unit]=～0.5 and ～1.5, which are consistent well with two hydrophobic domains appearing in solution at the same ratios. In the case of higher concentration of SPS(>0.04?mol/L), at a specific ratio of CTAB/SPS, the solution will convert to a gel due to crosslinking formed from the aggregation of CTAB molecules in micelles with SPS polymer chains.
出处
《感光科学与光化学》
CSCD
1999年第4期347-351,共5页
Photographic Science and Photochemistry
基金
国家自然科学基金
关键词
聚电解质
表面活性剂
光谱探针
甲基橙
polyelectrolyte, surfactant, hydrophobic domain, spectral probe
