In situ Investigation on Layer-by-Layer Deposition of Polyelectrolytes by Quartz Crystal Microbalance
- Received Date: 2007-11-08
- Rev Recd Date: 2007-11-30
Abstract: The effect of salt concentration on layer-by-layer deposition of poly(sodium 4-styrene sulfonate) (PSSS)/poly(vinylbenzyl trimethylammonium chloride) (PVTC) was investigated by use of quartz crystal microbalance with dissipation (QCM-D). The changes in frequency and dissipation demonstrate that the addition of NaCl leads the thickness of PSSS/PVTC multilayer to increase. The deposition of PSSS/PVTC is dominated by surface charge overcompensation level at lower salt concentrations. However, it is mainly determined by the interpenetration of polyelectrolytes at a higher salt concentration, as reflected in the oscillation of dissipation change.
|Citation:||Yun-feng Yan, Guang-ming Liu, Ye-cang Tang, Guang-zhao Zhang¤. In situ Investigation on Layer-by-Layer Deposition of Polyelectrolytes by Quartz Crystal Microbalance[J]. Chinese Journal of Chemical Physics , 2008, 21(3): 291-294. doi: 10.1088/1674-0068/21/03/291-294|