Study On Graft Copolymerization Of Vinyl Pyridine To Macromolecules Initiated By Cu(III)

This paper is mainly about the study on the graft copolymerization of vinyl pyridine onto macromolecules and will be discussed in three sections.Chapter I: The present research situation and development as well as the present study on vinyl pyridine. In addition, the theoretical and practical significance of vinyl pyridine's application in graft copolymerization onto macromolecules were pointed out.Chapter II: Cu(III), paired with characteristic groups with reducibility on the macromolecules' backbones was used to initiate the graft copolymerization of vinyl pyridine monomers onto poly(vinyl alcohol), nylon-6 and poly (ethylene terephthalate). High grafting parameters were obtained. The dependence of grafting parameters on such reaction conditions as temperature, reaction time, initiator concentration and the amount of monomer were also investigated. The resultant graft copolymers were characterized through FTIR, X-ray diffraction, and TGA:The quaternized nylon-g-PVP is used to adsorb heavy metal ions. The static adsorption saturation capacity of the production for Cr(VI) showed it's good adsorbability to heavy metal ions.Chapter III: FeCl₂/benzeneacetic acid as initiating system, acetone as solvent, controlled cationic polymerization of styrene has been studied. The results show that FeCl₂/benzeneacetic acid is particularly effective initiating system for controlled cationic polymerization of styrene. Well-defined polymer with low polydispersity (1.2W/M_n<1.5) was obtained. The number-average molecular weight of polymers increases linearly with monomer conversion.