Dissertation > Excellent graduate degree dissertation topics show

Preparation of Mesoporous Silica Inorganic Antibacterial and Its Application on Cotton Fabrics

Author: SunBin
Tutor: ChenJianYong
School: Zhejiang University of Technology
Course: Textile Engineering
Keywords: mesoporous SBA-15 modification silver loading antibacterial
CLC: TS195.6
Type: Master's thesis
Year: 2011
Downloads: 38
Quote: 0
Read: Download Dissertation

Abstract


Inorganic antibacterial agents with good properties of long lasting, stability, safe and broad-spectrum antibiosis, overcome the drawbacks of organic antibacterial agents, and with excellent antibacterial activity against both bacteria and funguses, having attracted many researchers’interest in the field of antimicrobials since 1980s. In all metals, silver has widely applied in many fields for its advantages in catalytic, electronic and optical, otherwise, silver is good at broad-spectrum antibiosis. The principal inorganic antibacterial agents have been originated from metal ions, it will not lead up to drug resistance.Mesoporous silicas present high superficial areas and large uniform pores, non-toxic and biological compatibility.The property of drug loading and controlled release is much better, compared with other carriers.Their silica wall surface can be modified with organic groups to adjusted their properties and achieve specific purposes. These inherent characteristics make the adsorption performance to silver ions of mesoporous silica much better than other inorganic carrier. The structure of mesoporous material, especially for the pores, which is bigger than the bacteria, can increase the chance of contacts with antibacterial agent and bacteria, improving the antibacterial efficiency and make the silver antibacterial agent an increasingly wide utilization in all fields.Mesoporous molecular sieves SBA-15 was synthesized by sol-gel process using tri-block copolymer P123 as a template agent and TEOS as silicon source in this paper. APTES (3-aminopropyl-triethoxysilane) was grafted on the surface of the SBA-15. Then the antibacterial agent was obtained at moderate condition. Finally, the cotton fabric was finished by the synthesized compound antibacterial agent through one time dipping. Besides,the problem of Ag type antibacterial agent tamishing has been resolved. The effect on the antibacterial property of the antibacterial fabrics was also tested.The main conclusions are as follows: (1) The prepared SBA-15 had the structure of two dimensional mesoporous with highly ordered hexagonal phase. The size distribution of mesoporous pore was verynarrow and uniform, the specific surface area of SBA-15 was 611m~2/g, the pore volume of mesoporous pore was 0.65cm~3/g. Highly ordered structure did benefit to the improvement of drug loading.(2) The surface of SBA-15 was modified by APTES. The amino groups were grafted on the surface of channels, the ordered structure and thermal ability remained.(3) The relationship between initial concentration of silver nitrate, loading time, temperature and the amount of loaded silver was studied.(4) Optimal design on finishing was chosen to give the cotton fabric functional finish, which made the fabric antibacterial. Besides, the problem of Ag type antibacterial agent tarnishing has been resolved.(5) The antibacterial test showed that this powder had 100% bacterial action on E.coli, S.aures and C.albicans within 1h by adding 1.00wt% antimicrobial on the fabrics. Antibacterial fabric are excellently antibiotic against the bacteria mentioned above and fairly wash fast.After washed ten times , the antibacterial rate of the antibacterial agent remained above 95%.

Related Dissertations

  1. Optimizition of Compositions and Processing Parameters and Wear Properties of Cemented Carbides YG11R Modified by Nanosized Rare Earth,TG135.5
  2. Research of High Speed Image Pre-processing System Based on FPGA,TP391.41
  3. Study on the Syntheses and Antibacterial Acticity of Metal Organic Complexes Built from Three Carboxylate Ligands,O621.13
  4. Study on Phylogenetic Diversity and Bioactivity of Symbiotic Fungi of Coral,R284
  5. First- principles calculations of doped anatase titanium dioxide photocatalytic properties,O643.36
  6. Synthesis of Polysulfones and Modification for Epoxy Adhesives,TQ433.437
  7. Synthesis and Performance Study of Bisphenol AP-based Polybenzoxazines,TQ320.1
  8. Preparation of Crop Stalk-Based Sorption Materials with High Performances and Their Applications for Pah Removal from Water,X712
  9. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  10. Study on Durability and Poisoning Resistant Performance of Pt/C and Pt/OMC Catalysts,O643.36
  11. Hydrophilic structure of different types of surface -modified polyurethane material and coagulation 12 factor nine peptide fragments,and fibrinogen P1 fragment of computer simulation of the interaction,O631.3
  12. Research on the Interface Modification of Epoxy Resin/Metallic Substrates and Epoxy Resin/Pigment,TQ630.1
  13. The Effects of Exposure to Bisphenol-a between Adolescence and Early Adulthood on Behaviors in Mice and Its Molecular Mechanism,R965
  14. Photodegradation of Orange Ⅱ by Mesoporous TiO2,X791
  15. Study on Screening of Bacterial Quorum Sensing from Plant Extraction and Their Inhibitions on Biofilm Formation,Q93
  16. Effect of Single and Double Mutations of Yeast H3K79L、H4K20L on the Function of ELP3 and Expression of SSA3,Q75
  17. Research on the Modified Methods of Fly Ash for Ammonia-nitrogen Wastewater Treatment,X703
  18. New aza- carbene complexes immobilized palladium and catalytic chlorinated aromatic Suzuki coupling reaction,O643.32
  19. Phosphate modification of nano- TiO 2 Photoelectrochemical Properties of the,TB383.1
  20. Modification of SEBS Rubber Via Living Radical Polymerization,TQ330.6
  21. Preparation of Silica Hollow Spheres with Mesopores in the Walls,TB383.1

CLC: > Industrial Technology > Light industry,handicrafts > Textile industry,dyeing and finishing industry > Dyeing and finishing industry > Finishing > The finishing of a variety of fiber and its products
© 2012 www.DissertationTopic.Net  Mobile