Abstract
A detailed study of the role that solution pH plays in the layer-by-layer processing of the weak polyelectrolytes poly(acrylic acid) and poly(allylamine hydrochoride) was carried out. It was found that dramatically different polymer adsorption behavior is observed as one systematically increases (or decreases) the charge density of a weak polyelectrolyte including transitions from very thick adsorbed layers (ca. 80 angstrom) to very thin adsorbed layers (ca. 4 angstrom) over a very narrow pH range. By controlling pH, it is possible to vary the thickness of an adsorbed polycation or polyanion layer from 5 to 80 angstrom. In addition, control over the bulk and surface composition of the resultant multilayer thin films is readily achieved via simple pH adjustments. These studies have provided new insights into the polyelectrolyte sequential adsorption process and have already opened up some interesting technological applications.
| Original language | English |
|---|---|
| Pages (from-to) | 4213-4219 |
| Number of pages | 7 |
| Journal | Macromolecules |
| Volume | 33 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2000 May 30 |
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ASJC Scopus subject areas
- Materials Chemistry
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pH-dependent thickness behavior of sequentially adsorbed layers of weak polyelectrolytes. / Shiratori, Seimei; Rubner, M. F.
In: Macromolecules, Vol. 33, No. 11, 30.05.2000, p. 4213-4219.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - pH-dependent thickness behavior of sequentially adsorbed layers of weak polyelectrolytes
AU - Shiratori, Seimei
AU - Rubner, M. F.
PY - 2000/5/30
Y1 - 2000/5/30
N2 - A detailed study of the role that solution pH plays in the layer-by-layer processing of the weak polyelectrolytes poly(acrylic acid) and poly(allylamine hydrochoride) was carried out. It was found that dramatically different polymer adsorption behavior is observed as one systematically increases (or decreases) the charge density of a weak polyelectrolyte including transitions from very thick adsorbed layers (ca. 80 angstrom) to very thin adsorbed layers (ca. 4 angstrom) over a very narrow pH range. By controlling pH, it is possible to vary the thickness of an adsorbed polycation or polyanion layer from 5 to 80 angstrom. In addition, control over the bulk and surface composition of the resultant multilayer thin films is readily achieved via simple pH adjustments. These studies have provided new insights into the polyelectrolyte sequential adsorption process and have already opened up some interesting technological applications.
AB - A detailed study of the role that solution pH plays in the layer-by-layer processing of the weak polyelectrolytes poly(acrylic acid) and poly(allylamine hydrochoride) was carried out. It was found that dramatically different polymer adsorption behavior is observed as one systematically increases (or decreases) the charge density of a weak polyelectrolyte including transitions from very thick adsorbed layers (ca. 80 angstrom) to very thin adsorbed layers (ca. 4 angstrom) over a very narrow pH range. By controlling pH, it is possible to vary the thickness of an adsorbed polycation or polyanion layer from 5 to 80 angstrom. In addition, control over the bulk and surface composition of the resultant multilayer thin films is readily achieved via simple pH adjustments. These studies have provided new insights into the polyelectrolyte sequential adsorption process and have already opened up some interesting technological applications.
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UR - http://www.scopus.com/inward/citedby.url?scp=0033746585&partnerID=8YFLogxK
U2 - 10.1021/ma991645q
DO - 10.1021/ma991645q
M3 - Article
VL - 33
SP - 4213
EP - 4219
JO - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 11
ER -