Abstract
Gelation in a concentrated dispersion of colloidal particles containing added polymer is modelled as a binary mixture of large and small spheres interacting with a combination of hard-sphere and sticky hard-sphere pair potentials. Numerical results are reported as a function of the stickiness parameter for the effects of particle and polymer volume fractions on the gel point in systems with a diameter ratio of 5 : 1. The theory predicts network formation either by bridging flocculation or by depletion flocculation depending on whether the strength of the particle–polymer attraction is finite or negligible. The model gives insight into the extreme sensitivity of the rheology of concentrated particulate dispersions and emulsions to small additions of polymer.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
