Attenuated Total Reflectance Spectroscopy Of Polymers
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Attenuated Total Reflectance Spectroscopy Of Polymers
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Author : Marek W. Urban
language : en
Publisher: Polymer Surfaces and Interface
Release Date : 1996
Attenuated Total Reflectance Spectroscopy Of Polymers written by Marek W. Urban and has been published by Polymer Surfaces and Interface this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Science categories.
Combines theoretical fundamentals with practical applications of attenuated total reflectance to the analysis of polymers and polymeric materials. Provides a comprehensive quantitative novel approach to the analysis and interpretation of attenuated total reflectance. Discusses sampling and microsampling techniques suitable for use with attenuated total reflectance analyses. Examines the advantages and disadvantages of attenuated total reflectance spectroscopy.
Surface Characterization Of Polymer Materials By Fourier Transform Infrared Attenuated Total Reflection Spectroscopy
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Author : Koji Ohta
language : en
Publisher:
Release Date : 1986
Surface Characterization Of Polymer Materials By Fourier Transform Infrared Attenuated Total Reflection Spectroscopy written by Koji Ohta and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Fourier transform infrared spectroscopy categories.
Quantitative Depth Profiling Of Polymer Surfaces With Fourier Transform Infrared Ftir Attenuated Total Reflection Atr Spectroscopy
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Author : Gang-chi Chen
language : en
Publisher:
Release Date : 1993
Quantitative Depth Profiling Of Polymer Surfaces With Fourier Transform Infrared Ftir Attenuated Total Reflection Atr Spectroscopy written by Gang-chi Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Fourier transform infrared spectroscopy categories.
Protein Adsorption On Hydrophilic Polymers
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Author : Ernesto Jesus Castillo-Cordova
language : en
Publisher:
Release Date : 1985
Protein Adsorption On Hydrophilic Polymers written by Ernesto Jesus Castillo-Cordova and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with categories.
Dextran Based Polymers Derived Surfaces
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Author : Silvia Angeloni Suter
language : en
Publisher:
Release Date : 2008
Dextran Based Polymers Derived Surfaces written by Silvia Angeloni Suter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The Use Of Attenuated Total Reflection Infrared Spectroscopy To Study The Intercalation Of Molten Polymer Into Layered Silicates In Real Time
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Author : Kenneth Chesley Cole
language : en
Publisher:
Release Date : 2009
The Use Of Attenuated Total Reflection Infrared Spectroscopy To Study The Intercalation Of Molten Polymer Into Layered Silicates In Real Time written by Kenneth Chesley Cole and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Degradation Of Polymer Substrate Interfaces
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Author : Arijit Ghosh
language : en
Publisher:
Release Date : 2010
Degradation Of Polymer Substrate Interfaces written by Arijit Ghosh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Abstract: Organic coatings are extensively applied to protect metal structures from corrosion related damage. The durability of such polymer coated adhesively bonded joint structures depend upon the stability of the interfaces between the polymer and the substrate it is coated on. It is economically important to have a thorough understanding of how such interfaces react to a variety of aggressive media that are relevant to real life scenarios. In this thesis, attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy has been used to detect changes at the interfaces between poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) (PVB) and ZnSe upon exposure to ozone, humidity and UV-B light. Also, the response of PVB-aluminum interfaces to liquid water has been studied and compared with the same for eponol (epoxy resin, diglycidyl ether of bisphenol A)- aluminum interfaces. In the presence of ozone, humidity and UV-B radiation, an increase in carbonyl group intensity was observed at the PVB-ZnSe interface indicating structural degradation of the polymer near the interface. However, such changes were not observed when PVB coated ZnSe samples were exposed to moisture and UV-B light in the absence of ozone showing that ozone is responsible for the observed structural deterioration. Liquid water uptake kinetics for the degraded PVB monitored using ATR-FTIR indicated a degradation of the physical structural organization of the polymer film. Exposure of PVB coated aluminum thin film to de-ionized water showed water incorporation at the interface. There were evidences for polymer swelling, delamination and corrosion of the aluminum film under the polymer layer. On the contrary, delamination/swelling of the polymer was not observed at the eponol-aluminum interface, although water was still found to be incorporated at the interface. Al-O species were also observed to form beneath the polymer layer. A decrease of the C-H intensities was detected at the PVB-aluminum interface during the water uptake of the polymer, whereas an increase of the C-H intensities was observed for the eponol polymer under these conditions. This is assigned to rearrangement of the macromolecular polymer chains upon interaction with water.
Attenuated Total Reflection Studies Of The Adsorption Of Polymers From Solution Onto Solid Surfaces
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Author : Sandra Maria Nelson
language : en
Publisher:
Release Date : 1988
Attenuated Total Reflection Studies Of The Adsorption Of Polymers From Solution Onto Solid Surfaces written by Sandra Maria Nelson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Attenuated Total Reflection Spectroscopy
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Author : Oscar Ahumada
language : en
Publisher:
Release Date : 1998
Attenuated Total Reflection Spectroscopy written by Oscar Ahumada and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
In Situ Monitoring Of The Polymerization Of Styrene On Gold Via Surface Initiated Atom Transfer Radical Polymerization Si Atrp Via Attenuated Total Reflection Fourier Transform Infrared Atr Ftir Spectroscopy At Low Temperatures
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Author : Richard Oluwarotimi Ademola Osibanjo
language : en
Publisher:
Release Date : 2013
In Situ Monitoring Of The Polymerization Of Styrene On Gold Via Surface Initiated Atom Transfer Radical Polymerization Si Atrp Via Attenuated Total Reflection Fourier Transform Infrared Atr Ftir Spectroscopy At Low Temperatures written by Richard Oluwarotimi Ademola Osibanjo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
The big picture for this work is the development of a biosensor that will determine contaminants in aqueous systems via surface-bound thin films. In order to make this a reality, it is important to have an understanding of the initial stages during polymerization. Details of the mechanisms and structures created in the earliest stages of surface-bound polymer films affect the nature and structure of the films in profound ways. The two major methods on tethering polymers onto various substrates are the "grating from" and the "grafting to" methods. This study used the grafting from approach owing to its ability to produce denser grafting densities and thus produce thicker films. This study investigates the stability, structure, kinetics and density of initiator binding to Au surfaces and formulation of polymers via atom transfer radical polymerization (ATRP) on Au surfaces at low temperatures (25 -50 °C). Though restricted by the lability of thiol-gold at 50 °C, advantages of lower temperatures includes; absence of side reactions, chain transfer reactions, thermal crosslinking and increased quality of the produced polymer film. Time-dependent molecular information is obtained in situ from deposition of thiol-based initiator on the substrate, addition of monomer and catalyst during surface initiated ATRP on a Au substrate.Surface initiated atom transfer radical polymerization (SI-ATRP) is accompanied by tethering an initiator molecule such as 11-Mercaptobromoisobutyrate bromides onto a gold surface via formation of a Au-S bond. As a monolayer of the compound binds to the surface, the chains line up to form a quasi-crystalline self-assembled monolayer. The bromine can be abstracted with a catalyst, such as CuBr/CuBr2 or photochemically to produce a radical which then takes part in polymerization. ATR-FTIR is the method of choice because it is a surface specific technique and information regarding the nature of the adsorbed initiator molecule and details concerning polymer orientation desorption, mechanisms and kinetics can be obtained. These studies will contribute to further understanding the implementation of overlayer enhancement for IR spectroscopy at interfaces and understanding of the structure and dynamics of supported polymer films. It will also help provide an in depth look into the reactions of thin films and the development of thin film sensor technologies. Research into newer catalysts may be required for Cu-SI-ATRP owing to findings showing that Cu catalysts aide the desorption of thiol based initiator molecules which result in extensive termination reactions and production of thin films.