A new method for the simultaneous determination of surface tension and density of polymer melts
Recently, we could improve the accuracy of this new technique by using pendant rather than sessile drops (generally, perfect axisymmetry can be realized more easily for pendant than for sessile drops). To form pendant drops without having to use a heated syringe a special sample holder was constructed. The densities determined by ADSA from the shape of pendant drops are comparable to independent PVT results. Moreover, our method is advantageous over PVT measurements in that it does not require a reference density, i. e. it is an absolute method.
Fields of research
- Experimental determination of the surface tension and density of technologically relevant polymer melts as a function of temperature using drop shape analysis methods
- Surface activity of additives in polymer melts
- Wetting of reactive polymers on functionalized solid substrates; reactive polymers in thin layers - interfacial interactions
- Interfacial phenomena in powder coating systems and in reinforced polymer composites