Skip to Main content Skip to Navigation
Journal articles

Viscosity of hydroxypropylcellulose solutions in non-entangled and entangled states

Abstract : The viscosity of isotropic hydroxypropyl cellulose (HPC) solutions was investigated in pure water and aqueous solution of 10% glucose as solvent. The intrinsic viscosity, [η], was determined by using an approach developed by Wolf, which is able to describe the viscosity evolution over a large domain of concentrations (c) for any type of macromolecular structure. The transition between dilute solution (i.e. the state with isolated non-interacting coils) and semidilute solution (i.e. the state where coils are touching each other, but with not so many interactions between chains) was evidenced for the HPC solutions. Newtonian viscosity resulted from the flow curves determined in semidilute concentration regime. From the plot of the specific viscosity as a function of a dimensionless parameter, c×[η] (defined as reduced concentration), the entangled and non-entangled states were delimitated for the HPC aqueous solutions. A critical overlap parameter of 2.4 was determined. In aqueous solution of 10% glucose, the semidilute non-entangled state was depicted for high molecular HPC in the investigated range of concentrations (below 4 g/dL).
Complete list of metadata

Cited literature [23 references]  Display  Hide  Download
Contributor : Magalie Prudon Connect in order to contact the contributor
Submitted on : Thursday, January 10, 2019 - 12:55:54 PM
Last modification on : Wednesday, November 17, 2021 - 12:28:32 PM


Publisher files allowed on an open archive


  • HAL Id : hal-01976879, version 1


Maria Bercea, Patrick Navard. Viscosity of hydroxypropylcellulose solutions in non-entangled and entangled states. Cellulose Chemistry and Technology, Editura Academiei Romane, 2018, 52 (7-8), pp.603 - 608. ⟨hal-01976879⟩



Record views


Files downloads