Degradation of polyacrylamide in dilute solution

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

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

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
Volume51
Issue number3
DOIs
Publication statusPublished - 1996 Mar 1
Externally publishedYes

Fingerprint

Polyacrylates
degradation
Degradation
Polymers
polymers
cleavage
Reynolds number
sodium sulfites
pipe flow
friction factor
District heating
Pipe flow
Shear flow
Polymer solutions
shear flow
drag
Drag
Sodium
polyacrylamide
Friction

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics

Cite this

Degradation of polyacrylamide in dilute solution. / Rho, Taeho; Park, Jongseong; Kim, Chongyoup; Yoon, Hyung K.; Suh, Hang Suk.

In: Polymer Degradation and Stability, Vol. 51, No. 3, 01.03.1996, p. 287-293.

Research output: Contribution to journalArticle

Rho, Taeho ; Park, Jongseong ; Kim, Chongyoup ; Yoon, Hyung K. ; Suh, Hang Suk. / Degradation of polyacrylamide in dilute solution. In: Polymer Degradation and Stability. 1996 ; Vol. 51, No. 3. pp. 287-293.
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