The Phase-behaviour Of The Complex Polymer System Confined In Cylindrical Nanotube Drived By Nanoparticles

With the nanotechnology field expanding development in furtherand depth, the investigation of the polymer nanocomposites hasbecome the hottest research topic. Through dopting nanoparticlesor adding surface field on complex polymer, we find various novelordered structures that are not accessible in the bluk. Thestructures have potential applications. In thesis, we investigate thephase-behaviour of complex polymer confined in cylindricalnanotube drived by nanoparticles, systematic study the influence ofselective nanopaticles the nanopaticles wetting strengh and theconcentration on block copolymer and block copolymer/homopolymer systems morphology by cell dynamical system (CDS)method of time dependent Ginzburg-Landau theory, andinvestigate the machanism of phase separating dynamics.Firstly, We investigate the effect of nanoparticles(NPs) on diblockcopolymer morphology confined in cylindrical nanotube. The resultsshow that various ordering structures are formed with the wettingstrength and concentration of NPs increasing in different cylindricalnanopore. Then we explain the reason of phase transformation. Theresult provide a new way to control self-assembly structures of softmaterial by adding nanoparticles, and can change the phase morphology effectively. It also help researchers to creat anorganic-inorganic hybrid material and electronic components.Secondly, we investigate the effect of nanoparticles(NPs) ondiblock copolymer/homopolymer morphology confined in cylindricalnanotube. The results show that various ordering structures areformed with the number of nanoparticles increasing in differentcylindrical nanotube. When the nanotube length and the lamellaespacing are commensurate, the system morphology transform frompancakes/cylinder structure to concentric cylindrical structure.When the nanotube length and the lamellae spacing are notcommensurate, the system morphology transforms from helical/cylinder structure to interconnected structure. The results have aimportant meanings that direct to make conductive device andchange the physicochemical property of polymer materials.Through the above-mentioned study, we learn that the polymersconfined system will be formed a variety of self-assembledstructures, which will provide a useful reference in ourexperimental system to achieve the orderly structures of the softmaterials.