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Nano select: progress in the synthesis of polymer particles with internal nanostructures: Based on but not limited to block copolymers

wallpapers News 2020-07-23

polymer particles with complex internal nanostructures are widely used in polymer science biology energy storage environmental protection analysis technology. The geometry size internal nanostructure of nanoparticles are important factors to determine their physicochemical properties potential functions. Self assembly of polymer in solution or melt is a common method to prepare polymer nanoparticles which can be used to construct multi-layered nanostructures at different scales. From the experimental point of view the internal structure of polymer particles is directly related to the synthesis method is directly determined by the properties of polymer structural units surface chemistry solvent properties size geometry of confined space. Although there are a lot of researches on polymer (self) assembly there is still a lack of carding in-depth discussion on the internal factors of different synthesis strategies the formation of internal micro / mesoscopic structure. Moreover most of the reports focus on block polymers with different physical chemical properties most of them regulate the internal structure of nanoparticles through fine design of molecular structure which is relatively expensive difficult to exp according to practical application.

therefore the Helmholtz energy Materials Research Institute in Berlin Germany summarizes the frontiers of research in this field systematically summarizes summarizes the important synthetic strategies for polymer nanoparticles with internal nanostructures. These strategies include: 1) the self exchange method of self-assembly of nano particles by solvent exchange 2) based on the interaction between emulsion droplets the medium. The emulsion solvent evaporation method 3) template assisted synthesis method 4 "one pot method" based on polymerization assembly synergistic process in situ polymerization. In each method the key factors affecting the formation evolution of the internal structure of nanoparticles such as interface relationship solvent properties physical chemical properties of polymers were discussed in detail. Finally the potential problems in the synthesis of polymer assemblies with complex structures their potential applications are prospected.

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