Roles of Chain Conformation and Interpenetration in the Growth of a Polyelectrolyte Multilayer
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- 作者：Guangming Liu ; Sirui Zou ; Li Fu ; Guangzhao Zhang
- 刊名：Journal of Physical Chemistry B
- 出版年：2008
- 出版时间：April 10, 2008
- 年：2008
- 卷：112
- 期：14
- 页码：4167 - 4171
- 全文大小：136K
- 年卷期：v.112,no.14(April 10, 2008)
- ISSN：1520-5207
文摘
In the present study, we have investigated the growth of a multilayer formed by poly(sodium 4-styrene sulfonate)(PSSS) and poly(diallyldimethylammonium chloride) (PDDA) at different salt concentrations by use of quartzcrystal microbalance with dissipation (QCM-D). The frequency change (
f) demonstrates that the exponentialgrowth mode gradually becomes dominant as NaCl concentration (CNaCl) increases. On the other hand, thedissipation change (D) reveals that the deposition is dominated by chain conformation at CNaCl < 1.0 M,where the change of the characteristic growth parameter agrees well with the results fit with Debye length.At CNaCl 
1.0 M, the growth is not determined by chain conformation but by chain interpenetration.
f) demonstrates that the exponentialgrowth mode gradually becomes dominant as NaCl concentration (CNaCl) increases. On the other hand, thedissipation change (D) reveals that the deposition is dominated by chain conformation at CNaCl < 1.0 M,where the change of the characteristic growth parameter agrees well with the results fit with Debye length.At CNaCl 1.0 M, the growth is not determined by chain conformation but by chain interpenetration.