Preparation of Surfactant-Resistant Polymersomes with Ultrathick Membranes through RAFT Dispersion Polymerization.

Autor: Song Z, Huang Y, Prasad V, Baumgartner R, Zhang S, Harris K, Katz JS; Formulation Science, Corporate Research and Development, The Dow Chemical Company , Collegeville, Pennsylvania 19426, United States., Cheng J
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2016 Jul 13; Vol. 8 (27), pp. 17033-7. Date of Electronic Publication: 2016 Jul 01.
DOI: 10.1021/acsami.6b05847
Abstrakt: Surfactant-resistant polymersomes have substantial potential to be used as delivery vehicles in industrial applications. Herein, we report the preparation of poly(ethylene oxide)-block-polystyrene copolymers with ultrahigh hydrophobic-block molecular weights through RAFT dispersion polymerization, which allows the polymerization-induced self-assembly into well-defined polymersomes with ultrathick membranes up to ∼47 nm. These ultrathick membranes significantly enhance the resistance against surfactant solubilization of the vesicles, improving the vesicles' potential for use in industrial encapsulations. Vesicle-encapsulated actives are well retained in the presence of up to 40 wt % of various anionic and nonionic surfactants, with less than 7% active leakage being observed after 30 days.
Databáze: MEDLINE