Polymerization in a tube reactor

A typical example of a tubular reactor for one-step processing of a newly synthesized polymer is described in a number of patents.183,184 This device consists of a high-pressure tube with the temperature profile regulated along its length. An extrusion die is mounted at the outlet end of the reactor. Continuous feeding is provided by a piston pump. 

Many processes involving the flow of a reactive liquid along a tube are known, which makes theoretical analysis of the flow of polymerizing liquids, i.e., fluids with time-dependent rheological properties, relevant to the tubular polymerization reactors and similar plant equipment used in reactive processing. 

There are three main sources of non-isothermal effects which can play different roles in real processes  

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