Dynamic Control over Aqueous Poly(butadiene-b-ethylene oxide) Self-Assembly through Olefin Metathesis
Journal Article
·
· Macromolecules
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Here, we show that olefin metathesis can be used in an extremely simple process to rapidly alter the morphology of self-assembled poly(butadiene-b-ethylene oxide) (PB–PEO) dispersions in situ. The addition of a water-insoluble Hoveyda–Grubbs catalyst to aqueous assemblies of PB–PEO leads to degradation of the hydrophobic PB block by well-established metathesis pathways and a concomitant change in the composition of the block copolymer. This phenomenon drives morphological transitions characterized by rapidly decreasing sizes of the self-assembled aggregates, the ultimate extent of which is readily controlled by catalyst concentration. Exemplary cases are presented in which transitions from worm-like micelles to spherical micelles or from vesicles to worm-like micelles can be accomplished within minutes.
- Research Organization:
- Los Alamos National Laboratory (LANL); Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- 89233218CNA000001; AC04-94AL85000
- OSTI ID:
- 1465387
- Alternate ID(s):
- OSTI ID: 1479020
OSTI ID: 1484666
- Report Number(s):
- LA-UR-18-28617; SAND--2018-8649J; 666957
- Journal Information:
- Macromolecules, Journal Name: Macromolecules Journal Issue: 17 Vol. 51; ISSN 0024-9297
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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