Antiadhesive properties

These aqueous emulsions can also be used to size paper for improving its water repeUency and antiadhesion properties (529). An increased level of organic titanate can be used to ensure the rapid curing (<5 s) for fast-paced paper or fiber curing operations (519). 

C. D. Heidecke and T. K. Lindhorst, Iterative synthesis of spacered glycodendrons as oligomannoside mimetics and evaluation of their antiadhesive properties, Chem. Eur. J., 13 (2007) 9056-9067. 

A new methodology to fabricate antimicrobial polymeric surfaces which exhibit antiadhesive properties has been developed using PP modified by air plasma and has the potential to be an excellent coating surface with activity against several pathogenic bacteria. 

Fluoropolymers Polymers prepared Irom unsaturated fluorine-containing hydrocarbons. Has good chemical resistance, weatherability, thermal stability, antiadhesive properties, low friction, and flammability, but low creep resistance, strength, and difficulty processing. The properties vary with the fluorine content. Processed by extrusion and molding. Used as liners in chemical apparatus, in bearings, films, coatings, and containers. Also called Fluoroplastics. 

In a general approach the styrene evaporation suppressants are dissolved in the UPRs. It is soluble in the resin, i.e., in the solution of imsaturated polyester in styrene and in styrene itself as well. It is, however, insoluble in the polyester. In the course of processing, styrene monomer evaporates from the surface and the suppressant forms a thin film, which exhibits barrier properties in relation to styrene. This mechanism is well known as far as solution of paraffin wax in UPRs is concerned. Nevertheless, paraffin wax cannot be applied as a styrene evaporation suppressant because of its antiadhesive properties and the decrease in interlaminar adhesion in glass fiber reinforced UPRs. Thus, a suitable styrene evaporation suppressant should contain an adhesion promotor with a waxy consistence. 

In the future we plan to clarify the role of adsorbed proteins and their influence on bacterial adhesion, involving studies with fibronectin which seems to play a key role in cellular adhesion processes. As the composition of the original polymer surface determines the nature of the adsorbed protein layer, it might be possible to modify the polymer surface in a way that proteins with antiadhesive properties are selectively adsorbed. Such an effect is known for albumin on platelet adhesion in a former study we could show that albumin is preferentially adsorbed onto radiation-modified hydrophilic surfaces. Bacterial adhesion to such surfaces is considerably reduced. 

Similarly, silk functionahzation of antiadhesive poly(methacrylic acid) brushes on titanium increased cell adhesion, but maintained its antiadhesive properties towards bacteria (Zhang et al., 2008). In some cases, the base material already represents a tissue adhesive surface and creating patches of nonadhesive PEG islands at the right separation distance excludes bacterial adhesion without negative effects on tissue cell adhesion (Wang et al., 2011). 

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