The Phase Behaviors Of Polymer Mixtures With Photochemical Reaction And Nanoparticles Induced By Masks

A variety of ordered morphologies are formed by the directed self-assembly of multi-component polymer mixtures under the influence of external conditions.These systems not only have the excellent performance of the original components,but also show many unique physical and chemical properties,and they therefore have very broad application prospects in the field of material manufacturing.The phase behaviors of polymer mixtures with photochemical reaction and nanoparticles induced by masks are investigated via using the Cell Dynamical System(CDS)based on the Ginzburg-Landau theory.First of all,we briefly introduce the soft matter,the thermodynamic and kinetic theory of phase separation in polymer mixtures systems in the first chapter.Second,we study the self-assemble behavior of photosensitive binary blend and nanoparticles composite system under illumination in the second chapter.We discuss the effects of the strength of light irradiation,nanoparticle concentration,wetting intensity,and composition ratio on the domain structure and formation.The results show that the occurrence of the photochemical reaction can effectively reduce the size of the domain.The stronger the light strength is,the smaller the size of the fomation is.Moreover,the addition of the particles slows down the growth of the domain.The synergy interaction between chemical reaction and the nanoparticles drives the system to form variety s table nanoscale structures.The system forms ordered lamellar structure when the particle concentration and the intensity of infiltration in the appropriate conditions.This model provide a novel way to create and manipulate nanoscale ordered structures.Third,we study the phase behaviors of a ternary blend with photochemical reaction induced by a mask in the third chapter.We discuss the effects of the composition ratio,the length-width ratio of the photomask,and photoreaction rate coefficient on the domain structure and formation.Through analysis of the phase diagram,we obtain the conditions of formation of the ordered structures,such as island-like,network-like,and lamellar structures.We also carry out a linear stability analysis.The results show that these ordered structures can still be stable after the removal of the mask.This study not only provides new ideas for the formation and control of the ordered structures,but also provides an useful reference for the manufacture of high-precision polymer devices.In the fourth chapter,we study the phase behaviors of a ternary blend with photochemical reaction driven by nanoparticles induced by a mask.By constructing a detailed two-dimensional phase diagram,we obtain abundant ordered structures,such as island-like,network-like structure,and we also obtain the conditions of existence of various ordered structures by adjusting the particle concentration,particle infiltration intensity,photochemical reaction rate and composition ratio.These results not only provide a reference for the preparation of ordered films,but also provide some guidance for the design and processing of materials in the field of materials.Finally,in the fifth chapter,we summarize the main conclusions of this paper,and hope to provide some reference for the future research work.