6533b82dfe1ef96bd1290840
RESEARCH PRODUCT
RHEOLOGICAL BEHAVIOUR OF MICROCRYSTALLINE CELLULOSE HYDROGELS
M. DolzJ. V. HerraezP. SobrinoClodoaldo RoldánR. Beldasubject
ThixotropyChromatographyShear thinningMaterials sciencePolymers and PlasticsConcentration effectSurfaces Coatings and FilmsCarboxymethyl celluloseMicrocrystalline celluloseShear ratechemistry.chemical_compoundViscosityRheologyChemical engineeringchemistrymedicinePhysical and Theoretical Chemistrymedicine.drugdescription
ABSTRACT An extensive study was made of the rheological behaviour of microcrystal1ine cellulose-sodium carboxymethyl cellulose (MCC-NaCMC) gels at six different concentrations. The effect of agitation time, storage time, shear rate and temperature on the viscosity of these thixotropic gels was analysed, over 7200 resulting values of being available to this effect The pseudoplastic and thixotropic characteristics of the gels was established and a progressive decrease in gel viscosity with increasing storage time was observed, although retaining stability. On the other hand, constant agitation for five minutes was found to reduce gel viscosity by 40 to 50%, regardless of concentration.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-02-01 | Journal of Dispersion Science and Technology |