Dissertation > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers

Tungsten Hexachloride and Its Oxide Aryl Phosphine Ligand Catalyzed DCPD Polymerization Activity and PDCPD/ MMT Nano-composites Research

Author JiangTongWu
Tutor LiJunXian;ZhangYuQing
School Henan University of Science and Technology
Course Polymer Chemistry and Physics
Keywords And triphenylphosphine oxide Tungsten hexachloride and its oxides Ligand complex catalyst Dicyclopentadiene Polydicyclopentadiene Montmorillonite Nanocomposites
CLC O631.3
Type Master's thesis
Year 2009
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The subjects of triphenylphosphine oxide and oxides of tungsten hexachloride and the reaction of the ligand of three dicyclopentadiene polymerization catalyst , the catalyst was studied dicyclopentadiene polymerization activity prepare a polydicyclopentadiene / montmorillonite nanocomposites, using infrared , X- ray diffraction and universal material testing machine polymer nanocomposites structure and properties were characterized and tested. Test results show that IR and triphenylphosphine oxide catalyst and ligand peaks have some common features , but is also observed in the core of tungsten atoms in the ligand was triphenylphosphine oxide and P and O atoms in the coordinate bond between the strong absorption peak , indicating that triphenylphosphine oxide and tungsten hexachloride was synthesized by incorporating complex catalyst is feasible . New catalyst preparation process is simple, low cost, compared with conventional catalysts , more stable under ordinary conditions , air and water vapor have a stronger tolerance, through the discovery of new catalyst activity test has a high catalytic activity . The synthesized catalyst is supported on montmorillonite (MMT) is formed on the catalyst, and using the load DCPD polymerization catalyst . XRD patterns of MMT composites described stripping a higher degree of proof successfully prepared polydicyclopentadiene / montmorillonite nanocomposite polymeric materials . Related mechanical performance test results show that the nano-composite material has high tensile and flexural strength , with the characteristics of tough and strong , especially when MMT content reaches a certain level, the impact strength of the composite up to 524.2J / m, maximum hardness of 73D, that the catalyst system may be prepared nanocomposite excellent performance .

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