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A kinetic model for solid-state polycondensation of nylon-6 was developed by extrapolation of the melt chemistry to the amorphous phase of the solid polymer. In this way, a phenomenological description of the process was obtained that required examining al ...
In order to describe the different events occurring during the anionic polymerization of polyamide 12 (PA12), a general concept of a time, temperature, and transformation (TTT) diagram was established and related to reactive processing conditions. Polymeri ...
The partial molar volume, .hivin.V, and the partial sp. vol., .hivin.n, were estd. for more than 25 polyelectrolyte structures. The materials investigated by d. measurements in highly dild. aq. solns. (c < 10-2 monomol/L) included both synthetic polyelectr ...
Tubular recycle reactors for polymn. are characterized by their macroscopic and microscopic mixing efficiency. Static mixers show a nearly plug-flow behavior over a wide range of viscosities (10-3 - 103 Pa s). The high heat transfer capacity of the reactor ...
The time-resolved fluxes of negative polysilicon hydride ions from a power-modulated rf silane plasma have been measured by quadrupole mass spectrometry and modeled using a simple polymerization scheme. Experiments were performed with plasma parameters sui ...
A series of 66 terpolymers of dl-lactide, glycolide, and epsilon-caprolactone was synthesized for the purpose of identifying those materials which exhibited rapid degradation in vitro. Polymers having half-lives from a few weeks to several months were iden ...
Inline conversion measurements in chem. reactions are in general and esp. in polymn. reactions necessary for process monitoring and control. For polymn. monitoring, the sound propagation (UPV) can be related to the texture of the bulk with a high accuracy. ...
