Abstract
The phase behavior of an amphiphilic block copolymer based on a poly(aspartic acid) hydrophilic block and a poly(n-butyl acrylate) hydrophobic block was investigated at the air–water and air–buffer interface.
Highlights
A key question in this context is the role of surfaces and interfaces: bone formation, dental de- and remineralization, calculus deposition, and arteriosclerosis are all surface- or interface driven or at least associated with the formation of a mineral deposit on a surface
At all temperatures the monolayer exhibits a transition from the 2D gas to the liquid phase, which is completed around a mean molecular area (MMA) of ~450 Å2
The current study focuses on the effects of a model oligomeric additive at the air–water interface on calcium phosphate (CP) formation
Summary
A key question in this context is the role of surfaces and interfaces: bone formation, dental de- and remineralization, calculus deposition, and arteriosclerosis are all surface- or interface driven or at least associated with the formation of a mineral deposit on a surface. The vast majority of experiments on biomimetic CP formation are on mineralization from bulk aqueous solution.[17,18,19] Only few studies address the effects of surfaces and interfaces on CP precipitation.[17,19,20,21,22,23,24,25,26] There are studies focusing on interface-controlled formation of other important (bio) minerals.[19,27,28,29,30,31]. The air–water interface is a useful model system to observe and quantify interface effects on CP formation.[32] In contrast to micelles in bulk aqueous solution (which have been used as model systems) monolayers are much closer to a surface of a bulk biomaterial.
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