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Synthesis and characterization of ma...

Burtovyy, Oleksandr.

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Synthesis and characterization of macromolecular layers grafted to polymer surfaces.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Synthesis and characterization of macromolecular layers grafted to polymer surfaces./
Author:	Burtovyy, Oleksandr.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2008,
Description:	292 p.
Notes:	Source: Dissertations Abstracts International, Volume: 70-10, Section: B.
Contained By:	Dissertations Abstracts International70-10B.
Subject:	Polymer chemistry. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3344257
ISBN:	9781109002140

Synthesis and characterization of macromolecular layers grafted to polymer surfaces.
Burtovyy, Oleksandr.

Synthesis and characterization of macromolecular layers grafted to polymer surfaces. - Ann Arbor : ProQuest Dissertations & Theses, 2008 - 292 p.

Source: Dissertations Abstracts International, Volume: 70-10, Section: B.

Thesis (Ph.D.)--Clemson University, 2008.

The composition and behavior of surfaces and interfaces play a pivotal role in dictating the overall efficiency of the majority of polymeric materials and devices. Surface properties of the materials can be altered using surface modification techniques. It is necessary to highlight that successful methods of surface modification should affect only the upper layer of the polymer material without changing bulk properties. The processes must introduce new functionalities to the surface, optimize surface roughness, lubrication, hydrophobicity, hydrophilicity, adhesion, conductivity, and/or biocompatibility. Research presented in this dissertation is dedicated to the synthesis, characterization, and application of thin macromolecular layers anchored to polymer substrates. Specifically, attachment of functional polymers via a "grafting to" approach has been extensively studied using PET and nylon model substrates. First, poly(glycidyl methacrylate) was used to introduce permanent functionalities to the model substrates by anchoring it to model films. Then, three different functional polymers were grafted on top of the previous layer. As one part of this study, the temperature and time dependence of grafting functional layers were studied. The surface coverage by hydrophobic polymer was determined from experimental data and predicted by a model. In general, the model has a high degree of predictive capability. Next, surface modification of polymeric fibers and membranes is presented as an important application of the polymer thin layers targeted in the study. Specifically, the procedures developed for surface modification of model substrates was employed for modification of PET, nylon, and cotton fabrics as well as PET track-etched membranes. Since epoxy groups are highly reactive in various chemical reactions, the approach becomes virtually universal, allowing both various surfaces and end-functionalized macromolecules to be used in the grafted layer synthesis. PET membranes modified with a reactive anchoring layer can be successfully used to build membrane assemblies by incorporating silica, aluminum, or titanium oxide microparticles as spacers. It is expected that the proposed approaches for the surface modification of the membranes and for the generation of multilayered membrane assemblies can be employed straightforwardly to provide an efficient platform for fabrication of breathable protective materials. Characterization of modified membranes with a cantilever-based method, which can be used for prediction of properties and behavior of thin grafted films, is reported. This technique can be used as a method for fast screening of modified membranes. The method is very robust and capable of detecting very small quantities of substance adsorbed; kinetics of the process can be tracked, as well. This approach can be further developed as a handheld sensor for early warning of the presence of chemical vapors and nerve agents.

ISBN: 9781109002140Subjects--Topical Terms:

3173488
Polymer chemistry.
Subjects--Index Terms:

Cantilever

Synthesis and characterization of macromolecular layers grafted to polymer surfaces.
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300 $a 292 p.
500 $a Source: Dissertations Abstracts International, Volume: 70-10, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Luzinov, Igor.
502 $a Thesis (Ph.D.)--Clemson University, 2008.
520 $a The composition and behavior of surfaces and interfaces play a pivotal role in dictating the overall efficiency of the majority of polymeric materials and devices. Surface properties of the materials can be altered using surface modification techniques. It is necessary to highlight that successful methods of surface modification should affect only the upper layer of the polymer material without changing bulk properties. The processes must introduce new functionalities to the surface, optimize surface roughness, lubrication, hydrophobicity, hydrophilicity, adhesion, conductivity, and/or biocompatibility. Research presented in this dissertation is dedicated to the synthesis, characterization, and application of thin macromolecular layers anchored to polymer substrates. Specifically, attachment of functional polymers via a "grafting to" approach has been extensively studied using PET and nylon model substrates. First, poly(glycidyl methacrylate) was used to introduce permanent functionalities to the model substrates by anchoring it to model films. Then, three different functional polymers were grafted on top of the previous layer. As one part of this study, the temperature and time dependence of grafting functional layers were studied. The surface coverage by hydrophobic polymer was determined from experimental data and predicted by a model. In general, the model has a high degree of predictive capability. Next, surface modification of polymeric fibers and membranes is presented as an important application of the polymer thin layers targeted in the study. Specifically, the procedures developed for surface modification of model substrates was employed for modification of PET, nylon, and cotton fabrics as well as PET track-etched membranes. Since epoxy groups are highly reactive in various chemical reactions, the approach becomes virtually universal, allowing both various surfaces and end-functionalized macromolecules to be used in the grafted layer synthesis. PET membranes modified with a reactive anchoring layer can be successfully used to build membrane assemblies by incorporating silica, aluminum, or titanium oxide microparticles as spacers. It is expected that the proposed approaches for the surface modification of the membranes and for the generation of multilayered membrane assemblies can be employed straightforwardly to provide an efficient platform for fabrication of breathable protective materials. Characterization of modified membranes with a cantilever-based method, which can be used for prediction of properties and behavior of thin grafted films, is reported. This technique can be used as a method for fast screening of modified membranes. The method is very robust and capable of detecting very small quantities of substance adsorbed; kinetics of the process can be tracked, as well. This approach can be further developed as a handheld sensor for early warning of the presence of chemical vapors and nerve agents.
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650 4 $a Polymer chemistry. $3 3173488
650 4 $a Materials science. $3 543314
653 $a Cantilever
653 $a Grafting
653 $a Macromolecular layers
653 $a Membranes
653 $a Modification
653 $a Polymer surfaces
690 $a 0495
690 $a 0794
710 2 $a Clemson University. $b Materials Science & Engineering. $3 1023649
773 0 $t Dissertations Abstracts International $g 70-10B.
790 $a 0050
791 $a Ph.D.
792 $a 2008
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3344257