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Precipitation polymerization

Molecular reaction that creates polymers

Summary

Molecular reaction that creates polymers

are dissolved in a solvent and this continuous phase that is a nonsolvent for the formed polymer beyond a critical molecular weight. In polymer science, precipitation polymerization is a heterogeneous polymerization process that begins initially as a homogeneous system in the continuous phase, where the monomer and initiator are completely soluble, but upon initiation the formed polymer is insoluble and thus precipitates.

After precipitation, the polymerization proceeds by absorption of monomer and initiator into the polymer particles.

A distinction should be made between precipitation and dispersion polymerization, due to the similarities. A dispersion polymerization is actually a type of precipitation polymerization, but the difference lies in the fact that precipitation polymerizations give larger and less regular particles, as a result of little or no stabilizer present.

References

fr:Procédé de polymérisation#Polymérisation en dispersion

References

  1. (2011). "Terminology of polymers and polymerization processes in dispersed systems (IUPAC Recommendations 2011)". [[Pure and Applied Chemistry]].
  2. George Odian in Principles of Polymerization third edition, John Wiley and Sons, 1991, pp 302
  3. Joseph C. Salamone in Concise Polymeric Materials Encyclopedia, CRC Press, 1998, pp 1373
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polymerization-reactions
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