The physicochemical parameters associated with the formation of these aggregates: critical aggregation concentration, aggregation number, dissociation constant and the enthalpy of dissociation were determined.
Strong hydrophobic interaction of associated PCL grafts facilitated primary aggregate formation with DS, significantly reducing critical aggregation concentration and secondary aggregates also appeared in DLS measurements.
HPC-g-PMPC copolymers can self-assemble into spherical aggregate structure above the critical aggregation concentration (CAC) at room temperature.
In the case that the aggregates are not micelles the term critical aggregation concentration (cac) is more appropriate.
Fluorescence and surface tension studies revealed that the fluorophore aggregates in aqueous medium, and its critical aggregation concentration (CAC) is ∼3.3 × 10−5 M.
The critical aggregation concentration (C.A.C ., hydrophilic-hydrophobic balance and aggregate sizes were found to mainly depend on the type of dendrimer used.
In solution, at low surfactant concentration, these coexist as separate species, but at the critical aggregation concentration (CAC) the surfactants start to aggregate with the polymer, which then acts as a nucleation core, until the saturation concentration is reached.
Depending on the critical aggregation concentration (CAC) of EAK16-II, the oligopeptide aggregates into protofibrils through seeding and/or a nucleation process.
In addition, there also exists a lower concentration [called critical aggregation concentration, CAC (Rosen 2004)] that induces the formation of a complex aggregate structure.
Since we are interested in finding the molecular weight of the aggregates the concentration range of our studies involves concentrations higher than the critical aggregation concentration (from 5 to 10 mM).
critical aggregation concentration.
