abstract
Cholinium-based ionic liquid methacrylic monomers having halide, lactate and acetate counter-anions were synthesized and polymerized by using conventional free radical polymerization. The polymer properties were characterized by NMR, SEC/GPC, TGA, and DSC and compared among eight different cationic polymethacrylic analogs. Polycations with different methacrylic alkylammonium backbones having lactate anion displayed comparatively better thermal stability than those having the acetate counter-anions and they also exhibited lower glass transition temperatures than their counterparts having acetate and halide counteranions. As an application, cholinium lactate methacrylate ionic liquid monomer was used to prepare ion gels by photopolymerization. Interestingly, these are the first examples of ion gels which are fully composed of low toxicity and biocompatible cholinium ionic liquids. Furthermore, the same ionic liquid monomer, cholinium lactate methacrylate, showed the ability to dissolve cellulose. This facilitated the preparation of transparent poly(ionic liquid)/cellulose composite coatings by photopolymerization.
keywords
TRIBLOCK COPOLYMER; SEPARATION MEMBRANES; ELECTROLYTES; COMPOSITE; POLYELECTROLYTES; CONDUCTIVITY; CYTOTOXICITY; BIOMATERIALS; DISSOLUTION; TRANSITION
subject category
Polymer Science
authors
Isik, M; Gracia, R; Kollnus, LC; Tome, LC; Marrucho, IM; Mecerreyes, D
our authors
Isabel Maria Delgado Jana Marrucho Ferreira
Full professor
Liliana C. Tomé
PhD StudentGroups
acknowledgements
The financial support of the Spanish Ministry MINECO through Project MAT2011-27993 and European Commission through Projects RENAISSANCE-ITN 289347 and ECLIPSE-CP 280786 is acknowledged. L.C.T. thanks FCT (Fundacao para a Ciencia e Tecnologia) for her Ph.D. Research Grant (SFRH/BD/72830/2010). I.M.M. also acknowledges FCT/MCTES (Portugal) for a Contract under Programa Ciencia 2007.