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The white block copolymer assembly is one of the emerging research field of nanotechnology. Block copolymers can self-assemble in solution to form nano-balls, rods, vesicles, and large compound micelles form. With the in-depth understanding of the process of self-assembly solution, promoting a block copolymer of potential applications in many fields, such as drug delivery, separation, electronics and catalysis. Amphiphilic block copolymers, the use of the \Similar to the small molecule surfactants, amphiphilic block copolymer in a selective solution can self-assemble to form the special structure of the association body, these associative assembly can be clearly structured spherical, rod, and a worm-like micelle morphology, but also with the unique nature of the vesicles, the tubular, and a layered double shape, its dimensions can be from the nanometer to the micron level, even greater. Wholly hydrophilic block copolymer of a block is water-soluble in order to promote the dissolution of the polymer and dispersing the other block by changing the conditions of the external environment, such as temperature, pH, ionic strength, or through, and with complexation of opposite charge of metal ions, small molecules and the polymer chains, from the hydrophilic block to the hydrophobic block, thereby having environmentally sensitive MICELLIZATION behavior. Due to their self-assembly behavior and sensitivity of the response of the external environment, it is also known as smart materials. Based on this, the paper by atom transfer radical polymerization (ATRP) designed and synthesized a series of block copolymers, and to achieve a solution polymorphous Controllable Preparation. The thesis specific studies summarized as follows: 1 using the method of atom transfer radical polymerization (ATRP), and PS-Br as macroinitiator initiator t-butyl acrylate polymerization reaction was conducted, and two block polymers synthesized PS-b- PtBA, product again after hydrolysis, to give the amphiphilic block copolymer PS-b-PAA. This polymer as a template, using ultrasound-assisted solvent-induced effects were successfully prepared a \Transmission electron microscopy (TEM), energy spectrum analysis (EDS), X-ray diffraction (XRD) characterization of nano-silver colloid prepared. 2 by 2 - bromopropionyl bromide and polyethylene glycol monomethyl ether (PMEG) terminal hydroxyl group was synthesized by esterification of the end group is Br atoms monodisperse the PMEG-Br macroinitiator. Using atom transfer radical polymerization method (ATRP), PMEG-Br as macroinitiator, cuprous bromide (CuBr) and 3 - (N, N-di methyl-amino-ethyl) amine (Me6TREN) for the catalytic system A block copolymer was prepared PMEG-b-PtBA, again in two wholly hydrophilic block copolymer obtained by hydrolysis under the action of trifluoroacetic acid (TFA) PMEG-b-PAA. Using infrared spectroscopy (IR), nuclear magnetic resonance instrument (NMR), gel permeation chromatography (GPC) on the structure and molecular weight of the polymer were characterized. Inducing agent for small molecules, study the effect of different concentrations of CTAB wholly hydrophilic block copolymer PMEG-b-PAA in the self-assembly of the aqueous solution of cetyl trimethyl ammonium bromide (CTAB), and preliminary interpretation of the reasons for these phenomena. 3 PMEG5000-Br as a macromolecular initiator, as a catalytic system, in CuBr/Me6TREN 40 ℃ achieve a styrene (St) atom transfer radical polymerization, the amphiphilic block copolymer PMEG-b-PS and characterized by its structure, molecular weight, molecular weight distribution.
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