Dissertation > Excellent graduate degree dissertation topics show

Synthesis and Interfacial Properties of Quaternary Ammonium Cationic Surface Monomer Bearing Piperazine Group

Author: HanLiNa
Tutor: ChengYuan
School: University of North
Course: Polymer Chemistry and Physics
Keywords: piperazine quaternary ammonium surface active monomer interfacial properties
CLC: TQ423
Type: Master's thesis
Year: 2010
Downloads: 32
Quote: 1
Read: Download Dissertation

Abstract


Novel monovalent quaternary ammonium surface monomer 1-undecylmethacrylate-1-bromide-1,4-dimethylpiperazine (PQⅠ) and Divalent quaternary ammonium surface monomer 1-undecylmethacrylatedibromide-1,4-dimethylpiperazine(PQⅡ) successfully synthesized using methacryloyl chloride, 11-bromoundecan-1-ol, 1,4-dimethylpiperazine and methy bromide as raw materials under the suitable conditions.The products (PQⅠand PQⅡ) were characterized by FTIR, 1H-NMR spectroscopy, 13C-NMR spectroscopy and elemental microanalysis, respectively.The results show that PQⅠand PQⅡcould be easily synthesized through three steps reaction; including one acryloyl chloridation and two alkanylations under the suitable conditions. Additionally, the critical micelle concentration (CMC) and surface tension were also measured. In pure water at 25℃, CMC of PQⅠand PQⅡare 44.6mmol/L and 67.3mmol/L, respectively, and the corresponding surface tensionγcmc are 40.95mN/m and 37.9mN/m.The solubility of PQⅠand PQⅡare determined by UV spectroscopy. Aggregation numbers of mcelle (Nagg) of PQⅠand PQⅡare determined by steady state fluorescene probe method, in which prene is used as fluorescene probe and benzophenone as quencher. Meanwhile the effects of PQⅠand PQⅡconcentration and additional salt concenttation on aggregation numbers are also investigated. The experiment results show that the solubility of PQⅠand PQⅡare large in pure water, while its ability of reducting water surface tension is weak, which suggests that PQⅠand PQⅡhave poor surface activity. Compared with the common surfactants possessily the similar structure, PQⅠand PQⅡhave low CMC value and Krafft Points. Aggregation numbers of PQⅠand PQⅡmicelle increas with the increasing PQⅠand PQⅡconcentration. In the presence of additional salt, at constant temperature, Nagg firstly shows slowly-increasing with sodium salt concentration until the concentration of additional salt is equal to the critical concentration C*, Nagg increases sharply.

Related Dissertations

  1. The Research of Emergent Dispose for Organic Liquid Spills by Modified Bentonites,X703
  2. Antibacterial Finish of Silk Fabric with Hyperbranched Polymerizable Quaternary Ammonium Salts HSDA-HTC,TS195.58
  3. The Synthesis and Application of Cationic Modifier ZY on Cotton Fibers,TS190.2
  4. Synthesis of Dissymmetric Bis-quaternary Ammonium with Imidazoline Ring and Study on Inhibitory Performance,TG174.42
  5. Characterization of the Surface Properties of the T-700 Carbon Fiber and Study of the Interface Properties of the Fiber Reinforced Composite,TB332
  6. Experimental Study of Tetramethylpyrazine Diphenylmethyl Piperazidine on Vascular Dementia Rats,R749.13
  7. Synthesis, Modification of Polyamidoamine Dendrime and Its Application in Fixing,TS529
  8. Preparation and Application of Cleaning Used Softener on Cotton Fabric,TQ649.4
  9. Study on Synthesis of Cyclohexene from H2O2 and Cyclohexene with Heteropolyphosphatotungstate or Heteropolyphosphatomolybdate as Catalyst,TQ231.1
  10. Synthesis and Properties of Alkylphenol Polyoxyethylenne Ethers Oligomer Surfactant,TQ423
  11. Synthesis, Characterization of CSTM and Application for Gene Delivery and MR Molecular Probes,TQ461
  12. Synthesis and Inhibition Performance of Novel Dissymmetric Bisquaternary Ammonium Salt,TG174.42
  13. Evolution Rules of Hygrothermal Properties of CCF300/Hby8485,TB332
  14. Relationship between Molecular Weight and Distribution of Alkyl Aryl Sulfonate and Surface Interface Properties,O621.25
  15. Synthesis of Epoxyethylbenzene with No-Solvent Method,TQ241
  16. Synthesis of Schiff Bases and Phosphoramidate Derivatives of Paeonol,R284
  17. Study on Inhibitors and Corrsion Behaviors of L360 Steel in Vapor and Liquid Phases Containing H2S/CO2,TG174.42
  18. Synthesis Process Optimization of NAF Enantiomers, Synthesis and Biological Evaluation of Chiral Phenylpiperazine Derivatives,R96
  19. Study on Interface Properties and Cracking Resistance of Thin-layer EVA-modified Cement Mortar,TU578.1
  20. The Study on Emulsifying Properties of Sweet Potato Protein,TS215
  21. Study on the Corrosion Inhibitor Used in H2S/CO2 System,TG174.42

CLC: > Industrial Technology > Chemical Industry > Reagents and the production of pure chemicals > Surfactant
© 2012 www.DissertationTopic.Net  Mobile