Dissertation > Excellent graduate degree dissertation topics show

Synthesis, Application and Film Morphology of Dodecyl(Polyether Block)Modified Piperazinyl Polysiloxane

Author: ZuoCaiNa
Tutor: FanHong
School: Zhejiang University
Course: Chemical Engineering
Keywords: dodecyl polyether block piperazinyl polysiloxane textile finishing film morphology
CLC: TS190.2
Type: Master's thesis
Year: 2014
Downloads: 27
Quote: 0
Read: Download Dissertation

Abstract


Mono-functionalized polysiloxanes could not meet the demand of requirement for textile finishing with pluralistic style; multi-functional modified polysiloxanes have been explored to solve the problem effectively. Long alky chain/piperazine modified polysiloxane can not only gifts fabrics with soft and smooth handle, but also improve the hydrophilic property and increase the fluffy and full sence of treated fabrics. Compared with amino polysiloxane, polyether modified amino polysiloxane can improve the hydrophilicity and anti-yellowing capability of treated fabric. The fact that polysiloxanes with various functional groups impart different properties to the fabric treated is believed to be related with the structures of polysiloxanes and their film morphology on fabric substrates. Study of the film morphology of the polysiloxane helps to reveal the film-forming mechanism and further understand the essence of the interaction between the polysiloxane and the fabric.In the first part of this thesis, with D4, concentrate hydrosilicone oil and hexa-methyldisiloxane (MM) as raw materials, emathlite as the catalyst, the low-hydro silicone oil was prepared via telomerization. A novel polysiloxane bearing dodecyl and epoxy side groups (DESO) was synthesized as an intermediate through hydrosi-lylation of polymethylhydrosiloxane with alkyl glycidyl ether and1-dodecene. Then, dodecyl/piperazine functional polysiloxane (DPSO) was prepared through the reaction of N-aminoethylpiperazine with DESO. The chemical structure of DPSO was characterized with FTIR and1H-NMR spectroscopy and its application performance on cotton fabrics was studied. DPSO with dodecyl side groups gifted the treated fabrics with good wettability and whiteness compared with piperazine functional polysiloxane, while with a slightly reduced softness as well as thickening handle. Film morphology, orientation, and performance on cotton substrates of DPSO were investigated by scanning electron microscope, atomic force microscopy, X-ray photoelectron microscope, and so on. Affected by the dodecyl side groups, DPSO formed relatively hydrophilic, macroscopically smooth but actually uneven films with many dodecyl side chain pillars on the treated substrate surfaces.The1,3-Dichlorotetramethyldisiloxane was prepared in the second part of this thesis through hydrolytic condensation of (Chloromethyl)dimethylchlorosilane. Through the reaction between it and anhydrous piperazine, the1,1,3,3-tetramethyl-1,3-bis(piperazinylmethyl)disiloxane was made. Then PPSO was synthesized by1,1,3,3-tetramethyl-1,3-bis(piperazinylmethyl)disiloxane and D4under alkaline catalysts. Polyether block amino polysiloxanes PESO was synthesized by reaction of PPSO with epoxy functional polyether (BANCOO). The chemical structure of PPSO was characterized with FTIR and1H-NMR spectroscopy and its application performance on cotton fabrics was studied. Compared with ordinary polyether block amino polysiloxanes synthesized from1,3-bis(3-amino-propyl) tetramethyldisiloxane, the samples treated with PPSO have good wettability and whiteness, while their softness suffer a slight decrease. Along with the increase of polyether section, the softness and thickening handle of the treated cotton suffer obvious decrease, while the wettability and whiteness improve.

Related Dissertations

  1. Infrared spectroscopy surfactant aqueous two- phase system of,O647.2
  2. Study on Film Morphology, Surface Properties and Film Formation Mechanism of Amino Silicone Oils,TS195.23
  3. Purification of an Estrogen Receptor from Carp and the Interaction with Phthalic Acid Esters (PAEs),S917.4
  4. Polyether block amino silicone softener Synthesis and Application,TS195.2
  5. Electrical stimulation between tredecimguttatus proteomic analysis of venom,Q51
  6. Isolation of Sodium Dodecyl Sulfate-degrading Bacteria and Its Biodegradation Behavior,X794
  7. An Approach to Study the Protective Performance of Nano ZnO, TiO2 Modified Bamboo,TS652
  8. A Study of Spinel Ferrite and Its Composite Materials,TB383.1
  9. Studies on the Properties of Organized Assemblies in Mixtures of CTAB/SDS Surfactants System by Cyclic Voltammetry,O647.2
  10. Some Drugs Molecular Spectroscopy Studies,O657.3
  11. Studies on Garment Fabric Finishing with Fibroin Finishing Agent,J523.5
  12. The Toxic Effects of Anionic Surfactant Sodium Dodecyl Sulfate (SDS) and Polycyclic Aromatic Hydrocarbons(PAHs) Anthracene on Ruditapes Philippinarum,X174
  13. Resonance Light Scattering Method for the Determination of Several Anti-inflammatory and Antiviral Drugs,O657.3
  14. Study on Synthesis of Ordered Lamellar/mesoporous Crystalline Zirconia Via Template Method,TB383.1
  15. Preparation of Polythene/Layered Double Hydrotalcide Nanocomposites,TB383.1
  16. Photocatalytic degradation of organic matter and the kinetics of,X53
  17. Preparation of Modified Aminosilicone Oil and Application on Textile Finishing,TS195.7
  18. Preparation and characterization of solid solution of cerium iron,O614
  19. SDS / cyclohexane / n-butanol / water microemulsion system, the nature of the research and the synthesis of nanomaterials,TB383.1
  20. Research on the Properties of Mixed Cationic and Anionic Surfactants Aqueous Solution,O647.2
  21. Study on the Synthesis and Properties of Dodecyl Polyglucosides,TQ423.2

CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > Dyeing and finishing industry > General issues > Dyes, pigments, pharmaceutical and additives
© 2012 www.DissertationTopic.Net  Mobile