| Self-assembly of hyperbranched polymers is the hot topic in molecular self-assemblyfield. In this thesis, chloroplatinic acid and functional hyperbranched polymers (HBPs),including carboxyl-endeded hyperbranched polyesters, amino-ended hyperbranchedpolyesters and hydroxyl-ended hyperbranched polyesters were composited and coordinated toobtain a variety of functional end-groups hyperbranched polymers/platinum complexes, andthen their hybrid self-assembly behavior and self-assembly mechanism were studied. Thesenovel hyperbranched polymers/platinum complexes were used in catalytic hydrosilylation.The main research contents were composed of the following aspects:(1) Two types of self-assembly process of the functional hyperbranchedpolymers/platinum complexes in organic solvents and interface were studied, and a variety offactors affecting the hybrid interface self-assembly morphology of the functionalhyperbranched polymers/platinum complex were also discussed in detail, including solvent,solubility parameter, temperature, time, relative humidity, molecular weight, concentrationand molecular structure. Finally, the controllable conditions of the self-assembly morphology(dendritic, arrow-shaped, and the vesicle) were obtained.(2)The coordination process of the functional hyperbranched polymers/platinumcomplexes were characterized by FT-IR and XPS, and the hybrid self-assembly mechanismwas studied by POM, TEM, SEM, XRD and solubility parameters calculation.(3) The functional hyperbranched polymers/platinum complexes as catalysts wereapplied to catalyze the hydrosilylation reaction between styrene and tetramethyl siloxane. Theeffects of the reaction temperature, time, catalyst molecular weight, and types of end groupsof hyperbranched polymers on the catalytic activity were studied in detail. The results showedthat functional hyperbranched polymers/platinum complex heterogeneous catalytic activityowns much higher catalyst activity than that of traditional homogeneous (Sperier andKarstedt), and its catalytic mechanism was analyzed and explained by a model. |
