Amphiphilic liquid-crystal block copolymer nanofibers via RAFT-mediated dispersion polymerization

Autor:	Xuewei Zhang, Chuong Bui, Bernadette Charleux, Annie Brûlet, Stéphanie Boissé, Jutta Rieger, Min-Hui Li, Pierre-Antoine Albouy
Rok vydání:	2012
Předmět:	Dispersion polymerization Materials science Small-angle X-ray scattering Chain transfer General Chemistry Condensed Matter Physics Small-angle neutron scattering chemistry.chemical_compound chemistry Nanofiber Amphiphile Polymer chemistry Copolymer Ethylene glycol
Zdroj:	Soft Matter. 8:1130-1141
ISSN:	1744-6848 1744-683X
DOI:	10.1039/c1sm06598j
Popis:	Well-defined, cholesteryl-based, amphiphilic block copolymer nanofibers have been obtained in a simple, one-pot, ethanol/water dispersion polymerization process using poly((meth)acrylic acid-co-(poly(ethylene glycol) (meth)acrylate) copolymers end-functionalized by a reactive trithiocarbonate end-group as macromolecular reversible addition–fragmentation chain transfer agents (macroRAFT agents). The resulting highly concentrated dispersions were analyzed by TEM (transmission electron microscopy), cryo-TEM, SAXS (small angle X-ray scattering) and SANS (small angle neutron scattering), which allowed the shape and size of the nanoobjects formed in situ to be fully characterized and which revealed moreover the presence of a smectic order in the hydrophobic cores. Due to this particular substructure, the nanofiber organization was observed over a broad composition range of the amphiphilic block copolymers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::50920f13691022701e89185645f688a5 https://doi.org/10.1039/c1sm06598j Zobrazit plný text záznamu