Topic：Polymer Nanostructures with modulated morphologies and functionalities
Speaker：Prof. Carmen Mijangos
Institute of Polylmer Science and Technology (ICTP), Spain
Time：2014.10.28 am 10:00
The fabrication of polymer nanostructures by AAO templates and Microfluids offer the possibility to generate a variety of different with structural definition on the nanometric scale. The properties of the nanostructured materials will depend on both the nature of its molecular constituents and the precise spatial positioning of them and, as the structure becomes smaller than a characteristic length, may be different from those of the bulk. With recent progress in synthetic routes and continuous emerging technologies, it is possible to reproducibly fabricate polymer nanostructures such as spherical functional gels, bymicrofluiodics (MF) polymer and polymer based composite nanotubes, nanorods and nanowires, etc. by the self-ordered porous alumina template (AAO). These materials are initiating development of new miniature devices and functional materials that exhibit unique capabilities.
Microfluidics method offers an advantage strategy for the rapid and continuous generation of polymer microparticles of highly monodisperse distribution size. By microfluidics method it is possible to prepare particles with diameters from several to hundreds of micrometers, a polydispersity below 5%, and shapes and morphologies not achievable in conventional methods. In this presentation, we will describe the fabrication of MF devices and the generation of PLGA particles.
The self-ordered porous alumina (AAO) template is recognized as one of the most versatile external shape-defined process to fabricate one-dimensional (1D) polymer nanostructures. By the so called alumina “AAO” template synthesis method it is possible to obtain polymer nanofibers, nanorods and nanotubes of very different chemical nature and tailored dimensions. Very recently, we started the study of one-step polymerization of vinyl monomers in AAO nanocavities, used as nanoreactors. In this presentation we will briefly report the radical polymerization of styrene (St) and vinyl fluoracrilate (FA) in ) in AAO nanoreactor.
Other studies, under progress, on the in situ polymerization will be also mentioned.