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Temperature induced...
Temperature induced formation of strong gels of acrylamide-based polyelectrolyte
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- Pai, Ranjith Krishna (author)
- Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi
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- Ng, Jovice B.S. (author)
- Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi
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- Bergström, Lennart (author)
- Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi
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- Pillai, Saju (author)
- Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi
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- Hedin, Niklas (author)
- Stockholms universitet,Institutionen för fysikalisk kemi, oorganisk kemi och strukturkemi
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show less...
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(creator_code:org_t)
- 2009
- 2009
- English.
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In: Journal of Colloid and Interface Science. - 0021-9797 .- 1095-7103. ; 337, s. 46-53
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Very strong physical gels have been formed by moderate temperature increases in aqueous dispersions of acrylamide-based beads and dissolved polymeric molecules. Rheometry, confocal laser scanning microscopy, and differential scanning calorimetric studies of acrylamide-based copolymers with acrylic acid, [Poly(AM-co-AA)], and 2-acrylamido-2-methylpropane acid, [Poly(AM-co-NaAMPS)], suggest that the temperature induced swelling of the polymer beads and chains, create strongly entangled polymer networks, above the upper critical solution temperature. Analyses of the viscoelastic response showed that the time-scale for the gelation process is about minutes to hours. The addition of high concentrations of Ca2+ resulted in a significant decrease in the gel strength
Keyword
- polyelectrolyte
- UCST
- rheology
- storage modulus
- salt stability
- gelation
Publication and Content Type
- ref (subject category)
- art (subject category)
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