Adsorption of tannic acid on chitosan-montmorillonite as a function of pH and surface charge properties

Study on the interaction between anionic and cationic latex particles and Portland cement

The interactions between nanoparticles (NPs) and proteins in complex biological application media such as blood serum are capable of inducing aggregate formation which can lead to subsequent changes in biological activity Here, we correlate surface charge, aggregation-tendency, and surface serum protein adsorption with cellular uptake and biodistribution in mice 
Polystyrene-based NPs (80 - 170 nm) with different surface functionalizations were synthesized and incubated with human serum Interaction of NPs with serum proteins and aggregate formation were analyzed by mass spectrometryanalysis and dynamic light-scattering Influence of surface functionalization on specific cellular uptake and organdistribution was characterized 
Localization and organ targeting of intravenously applied NPs preferentially depended on their aggregationbehavior in the presence of serum Whereas strongly aggregating particles mainly located to liver, non-aggregating particles distributed to all organs Determination of aggregate formation of NPs in the presence of serum and further analysis of the protein corona allows for pre-selection of NPs for in vivo application

/pdf/aggregation-behavior-of-polystyrene-nanoparticles-in-human-3se4hg1wmi.pdf

Aggregation Behavior of Polystyrene-Nanoparticles in Human Blood Serum and its Impact on the in vivo Distribution in Mice

Polyelectrolyte complex characterization with isothermal titration calorimetry and colloid titration

Clarification of olive mill and winery wastewater by means of clay–polymer nanocomposites

The main features of polyelectrolyte titrations with end-point indication by means of a particle-charge detector (PCD) were investigated. Because of their well-defined character, the charges of different synthetic polyelectrolytes and of latex samples with different functional groups were measured at different pH and ionic strength. The results show that PCD is a valuable tool for detecting effective or dissociated counterion charge without additional model assumptions. For negatively charged samples with exclusively strong acid functional groups, an excellent agreement was obtained between cation-exchange capacity and the charge measured by PCD over a wide pH range. For samples with additional carboxyl groups, the PCD charge was significantly lower than the total charge calculated from cation-exchange results. It can be concluded that counterion immobilization by a Stern layer-type arrangement is responsible for this effect.

Determination of electrokinetic charge with a particle-charge detector, and its relationship to the total charge

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Determination of electrokinetic charge with a particle-charge detector, and its relationship to the total charge