Degradation of polyacrylamide in dilute solution

Taeho Rho, Jongseong Park, Chongyoup Kim, Hyung Kee Yoon, Hang Suk Suh

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38 Citations (Scopus)


The degradation of polyacrylamide in aqueous solution was investigated experimentally from the point of view of developing the polymer solution as a drag reducing fluid in district heating systems. Aqueous 200 wppm solutions of polyacrylamide were subjected to turbulent pipe flow to induce degradation. The Reynolds number was between 15 000-35 000 and the temperature was in the range of 15-70°C. To assess the degradation of the polymer, the friction factor vs Reynolds number was monitored. The results show that, in high shear flow, the degradation is caused not only by scission of polymer chains but also by a radical propagation reaction initiated by scission of polymer chains. This was confirmed by adding sodium sulfite, which effectively suppressed the degradation.

Original languageEnglish
Pages (from-to)287-293
Number of pages7
JournalPolymer Degradation and Stability
Issue number3
Publication statusPublished - 1996 Mar
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by the Korean Ministry of Science and Technology under ‘94 MOST research project entitled New Housing Technology Development/Efficient Energy Transportation.

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Polymers and Plastics
  • Materials Chemistry


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