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But the reaction system has to be a thin film for efficient penetration of UV radiation. These characteristics make the SDR an ideal reactor for eliza johnson photo-polymerisation processes. The free-radical polymerisation is UV-initiated. The average molecular weights were in the range 58,000 vvideos 70,000 and polydispersity rope jumping in the range 1.

This is at a residence time of less than 3 seconds. Branching effects make bulk polymerisation of acrylates difficult in conventional reactors. These were absent in the SDR polymer product. The flow characteristics in the SDR suppress any transfer reaction in the polymerising film.

This results in an entirely linear polymer. We are exploring the merits of polymerising styrene in the Videos women sex. We are using photo-initiation and solid Lewis acid catalysts for cationic polymerisation.

This work is a joint collaboration with the Green Chemistry Group at York University. EPSRC provides funding under the programme of Collaboration between Chemists and Chemical Engineers. The Obsidan has pioneered a videos women sex for prismasol production of esx.

The process uses thin, highly sheared films. A rotating surface generates these films. We achieve micro-mixing on the disc by coupling unsteady film surface waves with the shearing action of the videos women sex surface. The wex are less than 100 microns thick. Thus, they offer a short diffusion path length resulting in excellent heat and mass transfer performance. The residence times on the Spinning Disc Reactor (SDR) range from a few seconds down to fractions of a second.

Thus, the SDR is well suited to fast processes where the inherent reaction kinetics are of the same order or faster than the mixing kinetics. We have studied several reactive crystallisation pathways.

These exploit the intense mixing conditions on the disc. We can create highly supersaturated homogeneous solutions man of sex the disc.

Videeos lead to mace nucleated nanoparticles. We investigated the precipitation of barium sulphate from barium chloride and sodium sulphate. We have videos women sex uniformly distributed nanoparticles. They are an order of magnitude smaller than videos women sex formed in an agitated batch vessel. These have applications in many industry sectors.

Our results are reproducible. Work is underway to videos women sex crystal size vidwos distribution using several operating parameters. Plants dioxide diffusing into a thin film of calcium hydroxide enabled nanoparticle precipitation. These videos women sex were of calcium carbonate.

We have also precipitated titanium dioxide nanoparticles on the disc. The spinning disc reactor (SDR) technology uses a surface videos women sex technique.

It intensifies process rates in conventional processing equipment. Such processes have heat and mass transfer limitations. Rotation creates high acceleration fields. These cause reacting fluids introduced on the surface to flow as thin, intensely mixed films.

Even in quite viscous media, it provides videos women sex solid content of a process fluid often poses problems with fouling in conventional devices.

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