Polymerization induced self-assembly: tuning of nano-object morphology by use of CO2

Autor:	Wei Zhao, Sébastien Perrier, Frank P. Lucien, Per B. Zetterlund, Siming Dong
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Dispersion polymerization Morphology (linguistics) Materials science Polymers and Plastics Organic Chemistry Bioengineering Nanotechnology Chain transfer Polymer Raft Biochemistry chemistry Polymerization Chemical engineering Nano Self-assembly
Zdroj:	Polymer Chemistry. 6:2249-2254
ISSN:	1759-9962 1759-9954
DOI:	10.1039/c4py01632g
Popis:	Polymeric nano-objects of non-spherical morphology (e.g. rods, vesicles) have a range of potential applications, and it is thus of great interest to develop synthetic approaches that enable large scale production as well as fine tuning of the morphology. To this end, we have developed reversible addition–fragmentation chain transfer (RAFT) dispersion polymerization in an alcoholic medium pressurized to low pressure (8.0 MPa) with CO2. It is demonstrated that the presence of CO2 has a profound effect on the morphology of the resulting polymer aggregates. In the presence of CO2, the formation of nano-objects with a high interfacial core/corona curvature is favoured relative to the corresponding system without CO2, e.g. rods are formed (with CO2) under conditions where vesicles (no CO2) would otherwise form. This is a convenient method for tuning the morphology without altering the recipe, and represents an attractive route to pure rod morphology, which is typically somewhat elusive.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5f62a21203b5562e2cc89425c6327fca https://doi.org/10.1039/c4py01632g Zobrazit plný text záznamu