Dissertation > Excellent graduate degree dissertation topics show

Study of Fluoroalcohol Effects on SET-LRP

Author: WangWenXiang
Tutor: ZhuXiuLin
School: Suzhou University
Course: Polymer Chemistry and Physics
Keywords: Single- electron transfer living / controlled radical polymerization (SET-LRP) 1,1,1,3,3,3 - hexafluoro isopropanol (HFIP) Methyl methacrylate (MMA) Solvent effect Methacrylate propynyl ester (PgMA)
CLC: O631.3
Type: Master's thesis
Year: 2011
Downloads: 23
Quote: 0
Read: Download Dissertation

Abstract


\In 2006, Percec, who proposed a single electron transfer \body (such as vinyl chloride) polymerization catalyst with less, so other than \In this thesis, SET-LRP study mechanisms of polymerization for the purpose of specific study of (1) a fluorine alcohol solvent on the polymerization behavior; (2) under the action of fluoride alcohol solvent, initiator structure and the type of the polymerization of halogen; (3 ) fluoride presence of an alcohol, propargyl methacrylate ester (PgMA) The SET-LRP. Specifically concluded as follows: (1) 1,1,1,3,3,3 - hexafluoro isopropanol (HFIP) as the solvent a methyl methacrylate (MMA) / EBiB / Cu (0) / PMDETA single electron transfer system \Polymerization results are presented typical \Increasing the solvent (HFIP) concentrations, can improve the controllability of the polymerization, the initiator exhibit higher efficiency and more narrow molecular weight distribution. HFIP presence of the polymer can be achieved for the control of stereoregularity. High solvent (HFIP) concentrations and lower temperatures, may improve the stereoregularity of the polymer. The results show, HFIP as a SET-LRP solvent of PMMA can be achieved and the stereoregularity of the dual control. (2) with benzyl halide as initiator, MMA monomer through a single-electron transfer \Polymerization results are presented typical \The results showed that, HFIP presence can improve the controllability of polymerization bromide, in addition, also inspected the halogen initiator initiator properties on efficiency. (3) In RAFT agent: α-naphthoic acid isobutyronitrile dithio ester (CPDN) of modulators investigated HFIP solvent effect, in the absence of any group for protection conditions, to achieve the acetylenic monomers : methacrylate propynyl ester, (PgMA) The SET-LRP. Polymerization kinetics of the polymerization reaction is first displayed, and the molecular weight conversion of the monomers with the increase in linear growth. The polymerization conversion rate of less than 50% of the cases, the molecular weight distribution index of the controllable range, the ends of the polymer and a high degree of functionalization.

Related Dissertations

  1. Theoretical Study on Catalytic Mechanism of Dehalogenation Catalyzed by Dehalogenases,O621.25
  2. Study on the Effects of Solvent and Acylating Agent on Lipase-catalyzed Resolution of Chiral Alkyl Alcohols,R917
  3. Solvent Effect on Infrared Spectra of Propionic Acid, 2-Chloropropionic Acid, Ethyl Propionate and Ethyl 2-Chloropropionate in Single and Binary Solvent Systems,R914
  4. The Effects of Solvents and Charge-transfer on Fermi Resonance,O433
  5. Preparation and Characterization of Some New Acrylate Monomers and Research of Their Polymerization,O631.5
  6. The Stability of the Complexes Combined by Metal Ions Na+ 、K+ 、Ca2+ 、Mg2+ 、Zn2+) and DNA Bases（A、T、G、C） Isomer,O641.4
  7. Studies of the Solvent Effect on Some Organic Reactions,O621.2
  8. Study on the Morphology Control of Solution Crystallization Processes for Organic Compound,O782
  9. Applications of Laser-induced Fluorescence Spectroscopy in Heterogeneous Catalysis,O657.3
  10. Theoretical Study on Tautomerism and QSAR of Multi-carbonyl Compound,O621.13
  11. Theoretical Study of Electron Transfer in Organic Systems and Non-equilibrium Solvation,O621.13
  12. Theoretical Study of the Dynamics of Electron Transfer in Biomolecular System,O641
  13. Studies and Applications of a Combined Discrete-continuum Solvation Model,O645
  14. Atom Transfer Radical Polymerization of Methyl Methacrylate and Styrene under Microwave Irradiation and Conventional Heating,O631.5
  15. Study on the Process and Mechanism of Aromatic Aldehyde Preparation via Liquid Autoxidation of Mono-substituted Toluene,TQ244.4
  16. Synthesis and molecular recognition of the role of the \,R313
  17. Synthesis, Structures and Properties of Transition Metal Complexes with Pyridyl, Bipyridyl Ligands,O621.13
  18. Theoretical Studies on Electronic and Vibrationally Resolved Multi-Photon Absorption and Dichroism,O437
  19. Method Development on Valence Bond Theory and Its Applications,O641.1
  20. Study on Catalytic Reaction Process for Synthesis of Cyclohexanol from Hydration of Cyclohexene,TQ233.1
  21. Theoretical Studies of the Interaction and Protection Mechanism between Carbon-based Nanomaterials and Biomolecules,TB383.1

CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The chemical nature of polymers
© 2012 www.DissertationTopic.Net  Mobile