%0 Journal Article
%A Ji, Wenxi
%A Yan, Jingjing
%A Chen, Erqiang
%A Li, Zichen
%A Liang, Dehai
%D 2008
%T In Situ and Online Monitoring Polymerization-Induced Micellization
%U https://acs.figshare.com/articles/journal_contribution/In_Situ_and_Online_Monitoring_Polymerization_Induced_Micellization/2929222
%R 10.1021/ma8005312.s001
%2 https://ndownloader.figshare.com/files/4627741
%K chain transfer agents
%K PEO
%K induction period
%K size micelles
%K formation
%K CHCl 3
%K laser light
%K polymerization process
%K micellization process
%K polymerization rate
%K polymer concentrations
%X The polymerization-induced micellization of poly(ethylene oxide)-b-poly(styrene-alt-maleic anhydride) (PEO-b-P(S-alt-MAn)) in CHCl3 was monitored in situ by laser light scattering. Reversible addition−fragmentation chain transfer (RAFT) polymerization was used to grow the P(S-alt-MAn) block onto the PEO macromolecular chain transfer agents (macro-CTAs) at 55 °C. The whole process underwent three stages over time: the induction period, the formation of loose aggregates, and the formation of micelles. The polymerization process and the micellization process were affected mutually: the increase in the degree of polymerization induced the micellization of PEO-b-P(S-alt-MAn); meanwhile, the formation of core−shell micelles retarded the polymerization rate. At higher polymer concentrations, the mutual effect was even stronger, where smaller size micelles with higher density were obtained.
%I ACS Publications