Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 22nd May 2019 from 11:00 AM to 1:00 PM (GMT).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.



Connectivity dependence of gelation and elasticity in AB-type polymerization: An experimental comparison of dynamic process and stoichiometrically imbalanced mixing

Abstract

To control various physical properties of polymer gels, it is important to control the connection probability between functional groups of network structure (connectivity). In this study, we compare two methodologies tuning the connectivity in AB-type polymerization: one is stopping the reaction intentionally at a certain conversion, and the other is mixing two prepolymers in a stoichiometrically imbalanced ratio. By experimentally examining relationships between elastic modulus and connectivity, we find that the relationships are almost the same for these two methodologies. However, critical connectivity for gelation is different. These results are well reproduced by a kind of the phantom network model whose structural parameters are estimated by using a mean-field approximation.

Back to tab navigation

Publication details

The article was received on 05 Apr 2019, accepted on 13 May 2019 and first published on 14 May 2019


Article type: Paper
DOI: 10.1039/C9SM00696F
Soft Matter, 2019, Accepted Manuscript

  •   Request permissions

    Connectivity dependence of gelation and elasticity in AB-type polymerization: An experimental comparison of dynamic process and stoichiometrically imbalanced mixing

    Y. Yoshikawa, N. Sakumichi, U. Chung and T. Sakai, Soft Matter, 2019, Accepted Manuscript , DOI: 10.1039/C9SM00696F

Search articles by author

Spotlight

Advertisements