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Mixed Surfactant-Polyelectrolyte Multilayers Containing Sodium Dodecylsulfate

Permanent Link: http://ncf.sobek.ufl.edu/NCFE003306/00001

Material Information

Title: Mixed Surfactant-Polyelectrolyte Multilayers Containing Sodium Dodecylsulfate
Physical Description: Book
Language: English
Creator: St. John, Ashlee
Publisher: New College of Florida
Place of Publication: Sarasota, Fla.
Creation Date: 2003
Publication Date: 2003

Subjects

Subjects / Keywords: Surfactant
Polyelectrolyte
Thin Films
Genre: bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: Understanding the complex relationships in polyelectrolyte-surfactant systems at the molecular level is important to a number of biological and industrial technologies. This study was undertaken to better understand the fundamental properties of polyelectrolyte-surfactant interactions in polyelectrolyte multilayers. Mixed surfactant-polyelectrolyte multilayer films were fabricated by spinassembly and electrostatic self-assembly. The charge alternating layers were comprised of PEI (poly(ethylenimine)) and PAZO (poly 1-4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido-l,2-ethanediyl, sodium salt). For the spin-assembled system, SDS was mixed with PAZO in solution. The polyanionic layers were then deposited from this mixed solution. For the electrostatically self-assembled system, bulk phase aggregates of PEI-SDS were prepared and then adsorbed directly onto polyanionic layers from aqueous solution. The amount of subsequent polyanion (PAZO) adsorption decreased as bulk solutions contained progressively greater amounts of SDS for both systems. Deposited layers from 10 mM SDS resulted in almost zero PAZO adsorption. This was attributed to charge neutralization in the polyelectrolyte layer, due to strong PEI-SDS electrostatic interactions. The spin-assembly results were compared with previous competitive adsorption studies of a mixed SDS/PAZO system coadsorbed on the pure PEI surface, and a pre 'lmfinary model for the adsorption of PEI-SDS complexes onto an anionic surface is proposed based on the UV-visible spectroscopic, ellipsometric, and contact angle data.
Statement of Responsibility: by Ashlee St. John
Thesis: Thesis (B.A.) -- New College of Florida, 2003
Electronic Access: RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE
Bibliography: Includes bibliographical references.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Local: Faculty Sponsor: Johal, Malkait

Record Information

Source Institution: New College of Florida
Holding Location: New College of Florida
Rights Management: Applicable rights reserved.
Classification: local - S.T. 2003 S2
System ID: NCFE003306:00001

Permanent Link: http://ncf.sobek.ufl.edu/NCFE003306/00001

Material Information

Title: Mixed Surfactant-Polyelectrolyte Multilayers Containing Sodium Dodecylsulfate
Physical Description: Book
Language: English
Creator: St. John, Ashlee
Publisher: New College of Florida
Place of Publication: Sarasota, Fla.
Creation Date: 2003
Publication Date: 2003

Subjects

Subjects / Keywords: Surfactant
Polyelectrolyte
Thin Films
Genre: bibliography   ( marcgt )
theses   ( marcgt )
government publication (state, provincial, terriorial, dependent)   ( marcgt )
born-digital   ( sobekcm )
Electronic Thesis or Dissertation

Notes

Abstract: Understanding the complex relationships in polyelectrolyte-surfactant systems at the molecular level is important to a number of biological and industrial technologies. This study was undertaken to better understand the fundamental properties of polyelectrolyte-surfactant interactions in polyelectrolyte multilayers. Mixed surfactant-polyelectrolyte multilayer films were fabricated by spinassembly and electrostatic self-assembly. The charge alternating layers were comprised of PEI (poly(ethylenimine)) and PAZO (poly 1-4-(3-carboxy-4-hydroxyphenylazo) benzenesulfonamido-l,2-ethanediyl, sodium salt). For the spin-assembled system, SDS was mixed with PAZO in solution. The polyanionic layers were then deposited from this mixed solution. For the electrostatically self-assembled system, bulk phase aggregates of PEI-SDS were prepared and then adsorbed directly onto polyanionic layers from aqueous solution. The amount of subsequent polyanion (PAZO) adsorption decreased as bulk solutions contained progressively greater amounts of SDS for both systems. Deposited layers from 10 mM SDS resulted in almost zero PAZO adsorption. This was attributed to charge neutralization in the polyelectrolyte layer, due to strong PEI-SDS electrostatic interactions. The spin-assembly results were compared with previous competitive adsorption studies of a mixed SDS/PAZO system coadsorbed on the pure PEI surface, and a pre 'lmfinary model for the adsorption of PEI-SDS complexes onto an anionic surface is proposed based on the UV-visible spectroscopic, ellipsometric, and contact angle data.
Statement of Responsibility: by Ashlee St. John
Thesis: Thesis (B.A.) -- New College of Florida, 2003
Electronic Access: RESTRICTED TO NCF STUDENTS, STAFF, FACULTY, AND ON-CAMPUS USE
Bibliography: Includes bibliographical references.
Source of Description: This bibliographic record is available under the Creative Commons CC0 public domain dedication. The New College of Florida, as creator of this bibliographic record, has waived all rights to it worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law.
Local: Faculty Sponsor: Johal, Malkait

Record Information

Source Institution: New College of Florida
Holding Location: New College of Florida
Rights Management: Applicable rights reserved.
Classification: local - S.T. 2003 S2
System ID: NCFE003306:00001

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