Time-dependent behavior in analyte-, temperature-, and shear-sensitive Pluronic PE9400/water systems

N. Calero, J. Santos, C. Echevarría, J. Muñoz, M. T. Cidade

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Pluronic PE9400/water binary systems at different concentrations were characterized by means of rheological and microstructural techniques. Temperature ramps revealed a structural transition defined by three zones, which determine time-dependent behaviors. Thus, non-time-dependent, antithixotropic, and thixotropic behaviors were observed depending on Pluronic’s concentration and temperature. These phenomena were analyzed resorting to rheological tools, namely hysteresis loops and transient tests, and supported by Cryo-SEM. The results obtained demonstrated the shear-sensitive character of these systems. All properties presented by these systems make them adequate and interesting for many applications such as injectable systems for tissue repair.

Original languageEnglish
Pages (from-to)1515-1522
Number of pages8
JournalColloid and Polymer Science
Volume296
Issue number9
DOIs
Publication statusPublished - 1 Sep 2018

Keywords

  • Pluronic PE9400
  • Shear-induced structures
  • Start-up at inception shear tests
  • Stimuli-sensitive hydrogels
  • Temperature ramp
  • Time-dependent behavior

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