To predict the polymer properties produced by free-radical polymerization of N-vinylpyrrolidone (NVP) in aqueous solution a detailed kinetic model has been developed. The allows to calculate chain length distribution, number branching points, and terminal double bonds (TDB). latter is accounted for since TDBs are precondition branching. While monomer conversion can be predicted sufficiently usi...

To gain insights into the microstructure of polyvinylpyrrolidone (PVP), a detailed reaction mechanism is developed, which characterizes polymer along property coordinate chain length, terminal double bonds (TDB), and branching points. For practical purposes, calculations with three coordinates are unfeasible, model reduction needed. Here, reduced only one single without significant loss accurac...

In this research, we used the surface acoustic wave (SAW) sensor to detect chemical compounds such as ammonia, methane, and ammonia-methane mixture gases. Very low concentration of ammonia (~250 ppb) and methane (~9 ppm) can be detected by our SAW devices. And we used mesoporous carbon hollow nanosphere in Poly-N-vinylpyrrolidone (PNVP) film to increase the sensitivity to ammonia from 6.91 to 1...

Two thermoresponsive polymers based on alkyl modified poly-vinylpyrrolidone (PVP) that exhibit very sensitive and reversible temperature-dependant water solubility are described. The application of these polymers as Au nanocatalyst stabilizers leads to a "smart" thermoresponsive Au nanoparticle catalyst.

Human hexosaminidase A was covalently bound to soluble poly(N-vinylpyrrolidone), and the effect of this binding on the enzyme inactivation by various procedures was investigated. Whereas the polymer-bound hexosaminidase underwent inactivation to the same extent as the free enzyme, when exposed to heat or acidic pH, the conjugation to polymer appeared to protect the enzyme towards proteolysis. T...