Influence of salinity on the slip velocity of xanthan gum solutions

Maximiliano Valdez-González*, Miguel Angel Valdez, Francisco M. Goycoolea

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The influence of three different salts (KCl, 0.0002 M; CaCl2, 0.0001 M; NaCl, 0.0002 M) on the slip velocity of 0.390 xanthan solutions, around the corresponding order-disorder conformational transition temperature, was investigated with a glass capillary rheometer. An enhancement of the slip velocity was observed very near the transition for the three salts studied. This result is similar to the one reported by us, using two different xanthan samples in the absence of salt. The behavior of the power-law parameters of the slip velocity was similar to the one obtained with xanthan without salt around the transition temperature. Slip was determined with the Mooney method, showing good results and only small discrepancies at higher temperatures (T > 34°C).

Original languageEnglish
Pages (from-to)277-281
Number of pages5
JournalRevista Mexicana de Fisica
Issue number3
StatePublished - Jun 1998


  • Capillary rheometer
  • Slip velocity
  • Transition temperature
  • Xanthan solutions


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