Manufacturing

Polymer manufacturing processes

Introduction to Polymer Manufacturing Processes The conversion of raw polymers into finished products involves a series of polymer manufacturing processes. The first step consists of mixing additives into the polymer to achieve the required modification to the properties of the …

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Polypropylene: the Workhorse of the Plastics Industry

Polypropylene. Little did Karl Zeigler or Giulio Natta realise, 60 years ago, when they were developing a catalyst system to produce a useful thermoplastic from the inexpensive monomer, propylene, that their work would have such far reaching consequences.     …

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Polypropylene: the Workhorse of the Plastics Industry

Polyacetal (POM): When to Select Homopolymer or Copolymer?

The production of stable thermoplastics from formaldehyde was discovered around 60 years ago, using two independent approaches.  To prevent unzipping of the polymer chains at high temperature, DuPont used an end cap mechanism. Celanese opted for incorporation of a comonomer …

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Polyacetal (POM): When to Select Homopolymer or Copolymer?

How to A-Void that Sinking Feeling

A previous knowledge base article addressed mould shrinkage. We recognised mould shrinkage (the difference between the mould cavity dimensions and the final dimensions of the moulding) depends on the material (amorphous v semi-crystalline; filled v unfilled) and also on the …

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How to A-Void that Sinking Feeling

What is Environmental Stress Cracking?

Environmental stress cracking (esc) is not the result of the continual battle that the plastics industry has in convincing environmentalists and politicians that plastics can be the solution to environmental problems and not the cause. Esc is the consequence of …

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