02409naa a2200349 a 450000100080000000500110000800800410001902200140006002400520007410000250012624501550015126000090030652013120031565000130162765000130164065300280165365300310168165300320171265300290174465300340177365300310180765300130183870000200185170000190187170000140189070000220190470000170192670000220194370000240196570000220198977300480201121664062024-11-27       2024    bl uuuu     u00u1 u    #d  a0969-02397 ahttps://doi.org/10.1007/s10570-024-06085-32DOI1 aPETERSOHN JUNIOR, E.  aRheological properties of microfibrillated cellulose and hydroxypropyl methylcellulose blends in ethanol/water solvent systems.h[electronic resource]  c2024  aMicrofibrillated cellulose (MFC) and hydroxypropyl methylcellulose (HPMC) were employed as gelling agents in hydroalcoholic solu- tions. However, a limited number of studies have explored the interactions between MFC and cellulose derivatives in organic solvents. Most of these stud- ies have primarily focused on either the interactions between MFC and polymers in aqueous solutions. To investigate their collaborative effect, phase diagrams were constructed by varying the concentration of the constituent elements, confirming phase separa- tion, and identifying liquid-like and gel-like proper- ties through oscillatory rheological measurements. Oscillatory amplitude, frequency, oscillatory swing temperature and viscosity were performed. Addition- ally, aerogels were fabricated with and without etha- nol for microscopic analysis. It was demonstrated that ethanol significantly influences the rheological char- acteristics of MFC and MFC + HPMC dispersions, resulting in an increase in the elastic modulus (G’), decreased thixotropic behavior, and increased stabil- ity. Tests were also conducted with urea, a strongly chaotropic agent, providing evidence of the types of interactions governing the systems, and demonstrat- ing that intermolecular hydrogen bond interactions play a predominant role.  aRheology  aCelulose  aCelulose microfibrilada  aHidroalcoólico soluções  aHidroxipropilmetil celulose  aHydroalcoholic solutions  aHydroxypropyl methylcellulose  aMicrofibrillated cellulose  aReologia1 aLUCIZANI, A. C.1 aVERÍSSIMO, V.1 aPIRES, C.1 aANDRADE, A. S. de1 aMATOS, M. de1 aPERISSUTTI, G. E.1 aMAGALHAES, W. L. E.1 aFREITAS, R. A. de  tCellulosegv. 31, n.13, p. 7925-7940, 2024.