Non Destructive Characterization Of Polymer Interphases And In Situ Polymerization Using Surface Enhanced Raman Scattering

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Non-Destructive Characterization of Polymer Interphases and In-Situ Polymerization Using Surface-Enhanced Raman Scattering

Author :
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Non-Destructive Characterization of Polymer Interphases and In-Situ Polymerization Using Surface-Enhanced Raman Scattering by :

Download or read book Non-Destructive Characterization of Polymer Interphases and In-Situ Polymerization Using Surface-Enhanced Raman Scattering written by and published by . This book was released on 1992 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The molecular structure of interphases between substrates such as metals and graphite and polymer systems cured against them was determined using surface analysis techniques such as reflection-absorption infrared spectroscopy, X-ray photoelectron spectroscopy, and surface enhanced Raman scattering. It was found that the substrates had a significant effect on the molecular structure of the interphase and that the molecular structure of the interphase was significantly different from that of the bulk polymers. In some cases, there was a vigorous reaction between components of the polymer system and the substrate. Thus, when an acrylic adhesive was cured against silver substrates, o-benzoic sulfimide, a component of the curing system, segregated to the interface and reacted with metal ions to form salts. The salts reacted with a peroxide in the curing system to form radicals which initiated polymerization. In other cases, components of the polymer preferentially adsorbed onto the substrate. Thus the curing agent dicyandiamide was adsorbed at the interface between an epoxy and silver. The behavior of polyamic acids was strongly affected by substrates they were deposited on.

Characterization of Polymer Interphases Using Surface-Enhanced Raman Scattering

Author : F. J. Boerio
Publisher :
ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Characterization of Polymer Interphases Using Surface-Enhanced Raman Scattering by : F. J. Boerio

Download or read book Characterization of Polymer Interphases Using Surface-Enhanced Raman Scattering written by F. J. Boerio and published by . This book was released on 1990 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced Raman scattering (SERS) and reflection-absorption infrared spectroscopy (RAIR) were used to determine the molecular structure of interphases between polymers and metal substrates. An interesting example was provided by pyromellitic diimide (PMDI), a model compound for polyimides, and silver substrates. Normal Raman spectra of PMDI were characterized by strong bands near 1772, 1370, 760, and 655 1/cm and medium intensity bands near 1630 and 1205 1/cm were weak in SERS spectra obtained from films of PMDI spin-coated onto silver island films while those near 1370 and 1205 1/cm and a new band near 685 1/cm were strongest. Differences between the normal Raman and SERS spectra were related to orientation effects indicating that PMDI was absorbed onto silver with a vertical conformation in which the rings were perpendicular to the surface and one imide group was in contact with the surface. Keywords: Polymer interphases, Surface enhanced raman scattering, Molecular structures, Thin films, RAIR, SERS, DD Form 1473, Spectroscopy. (JG).

Non-destructive Characterization of Polyimide/silver Interphases Using Surface-enhanced Raman Scattering

Author : Jin-Ter Young
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.:/5 (246 download)

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Book Synopsis Non-destructive Characterization of Polyimide/silver Interphases Using Surface-enhanced Raman Scattering by : Jin-Ter Young

Download or read book Non-destructive Characterization of Polyimide/silver Interphases Using Surface-enhanced Raman Scattering written by Jin-Ter Young and published by . This book was released on 1990 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Polymer Surfaces and Interfaces Using Surface-enhanced Raman Scattering

Author : Pel-Pel Hong
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.:/5 (298 download)

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Book Synopsis Characterization of Polymer Surfaces and Interfaces Using Surface-enhanced Raman Scattering by : Pel-Pel Hong

Download or read book Characterization of Polymer Surfaces and Interfaces Using Surface-enhanced Raman Scattering written by Pel-Pel Hong and published by . This book was released on 1992 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Interfaces Between Polymers and Substrates Using Surface-enhanced Raman Scattering

Author : Wen-Hsien Tsai
Publisher :
ISBN 13 :
Total Pages : 530 pages
Book Rating : 4.:/5 (261 download)

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Book Synopsis Characterization of Interfaces Between Polymers and Substrates Using Surface-enhanced Raman Scattering by : Wen-Hsien Tsai

Download or read book Characterization of Interfaces Between Polymers and Substrates Using Surface-enhanced Raman Scattering written by Wen-Hsien Tsai and published by . This book was released on 1991 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Structure and Properties of Polymer Interphases

Author : F. James Boerio
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Structure and Properties of Polymer Interphases by : F. James Boerio

Download or read book Structure and Properties of Polymer Interphases written by F. James Boerio and published by . This book was released on 1988 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: The molecular structure of interphases between polymer systems and metal substrates was determined by using x-ray photoelectron spectroscopy (XPS), reflection-absorption infrared spectroscopy (RAIR), and attenuated total-reflection infrared spectroscopy (ATR) to characterize the failure surfaces of double cantilever beam adhesive joints prepared by curing beams of epoxies against metal beams. The structure of the interphases depended strongly on the curing agent, metal substrate, and use of a silane primer on the substrate. When joints were prepared by curing an epoxy with a tertiary amine curing agent at 75 C against a steel substrate primed with a dilute aqueous solution of gamma-aminopropyltriethoxy-silane, there was little reaction between the primer and adhesive and failure occurred near the primer/adhesive interface. The interphase consisted of low molecular weight siloxane oligomers in which the amino groups formed bicarbonates with water and carbon dioxide absorbed from the atmosphere. When similar joints were cured at 150 C, the bicarbonates dissociated, enabling the adhesive and primer to react, and shifting the locus of failure near the primer/adherend interface or into the epoxy. The use of surface-enhanced Raman scattering (sers) for non-destructive characterization of interphases between polymers and metals was demonstrated. (aw).

Government Reports Annual Index

Author :
Publisher :
ISBN 13 :
Total Pages : 1400 pages
Book Rating : 4.:/5 (89 download)

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Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Polymer Characterization Interdisciplinary Approaches

Author : Clara D. Craver
Publisher : Springer Science & Business Media
ISBN 13 : 1468419293
Total Pages : 278 pages
Book Rating : 4.4/5 (684 download)

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Book Synopsis Polymer Characterization Interdisciplinary Approaches by : Clara D. Craver

Download or read book Polymer Characterization Interdisciplinary Approaches written by Clara D. Craver and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical and spectroscopic methods have been used jointly for characterization of polymers for at least four decades. Yet, new techniques permit increasingly refined determination of polymer chemistry and morphol ogy_ The correlation of this knowledge with physical properties of polymers is helpful to planned synthesis of new products. The most prominent spectroscopic techniques through the forties and fifties were infrared and ultraviolet spectroscopy. Nuclear magnetic resonance, electron spin resonance and MOssbauer spectroscopy started making sig nificant contributions to polymer chemistry in the early sixties. Still more recently fluorescence spectroscopy and laser Raman spectroscopy have become readily appli cable to polymers and are contributing significantly to the understanding of the relationship between polymer structure and properties. Determination of the distribution of monomer se quences by molecular size has become possible through combined gel permeation chromatography and spectroscopic analysis. Fragments of polymers from chemical break down or from pyrolysis are further fractionated and structurally analyzed. The relationship between the chemistry of polymers and performance can be determined from changes in chemical structure and orientation after curing, degradation, or physical or thermal manipulation of the polymers.

Characterization of Interphases Between PMDA/4-BDAF Polyimides and Silver Substrates Using Surface-Enhanced Raman Scattering and Reflection- Absorption Infrared Spectroscopy

Download Characterization of Interphases Between PMDA/4-BDAF Polyimides and Silver Substrates Using Surface-Enhanced Raman Scattering and Reflection- Absorption Infrared Spectroscopy PDF Online Free

Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Characterization of Interphases Between PMDA/4-BDAF Polyimides and Silver Substrates Using Surface-Enhanced Raman Scattering and Reflection- Absorption Infrared Spectroscopy by :

Download or read book Characterization of Interphases Between PMDA/4-BDAF Polyimides and Silver Substrates Using Surface-Enhanced Raman Scattering and Reflection- Absorption Infrared Spectroscopy written by and published by . This book was released on 1990 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface-enhanced Raman scattering (SERS) and reflection-absorption infrared spectroscopy (RAIR) were used to determine the molecular structure of interphases formed by curing the polyamic acid of pyromellitic dianhydride (PMDA) and 2,2-BIS(4-(4-aminophenoxy)-phenyl)-hexafluoropropane (4-BDAF) against silver substrates. SERS spectra of the cured polymer were more simular to the SERS spectra of the polyamic acid than to the normal Raman spectrum of the polymide, indicating that curing of the polymer was inhibited by interaction of the polyamic acid with the substrate. Thus, the strongest band in the normal RAMAN spectrum of the polymide was near 1406 cm-1 and was assigned to the CNC axial stretching mode.

Non-Destructive Material Characterization Methods

Author : Akira Otsuki
Publisher : Elsevier
ISBN 13 : 0323984789
Total Pages : 842 pages
Book Rating : 4.3/5 (239 download)

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Book Synopsis Non-Destructive Material Characterization Methods by : Akira Otsuki

Download or read book Non-Destructive Material Characterization Methods written by Akira Otsuki and published by Elsevier. This book was released on 2023-09-01 with total page 842 pages. Available in PDF, EPUB and Kindle. Book excerpt: Non-Destructive Material Characterization Methods provides readers with a trove of theoretical and practical insight into how to implement different non-destructive testing methods for effective material characterization. The book starts with an introduction to the field before moving right into a discussion of a wide range of techniques that can be immediately implemented. Various imaging and microscopy techniques are first covered, with step-by-step insights on characterization using a polarized microscope, an atomic force microscope, computed tomography, ultrasonography, magnetic resonance imaging, infrared tomography, and more. Each chapter includes case studies, applications, and recent developments. From there, elemental assay and mapping techniques are discussed, including Raman spectroscopy, UV spectroscopy, atomic absorption spectroscopy, neutron activation analysis, and various others. The book concludes with sections covering displacement measurement techniques, large-scale facility techniques, and methods involving multiscale analysis and advanced analysis. - Provides an overview of a wide-range of NDT material characterization methods, strengths and weaknesses of these methods, when to apply them, and more - Includes eddy current sensing and imaging, ultrasonic sensing and imaging, RF and THz imaging, internet and cloud-based methods, among many others - Presents case studies, applications and other insights on putting these methods into practice

Government Reports Announcements & Index

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ISBN 13 :
Total Pages : 852 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Government Reports Announcements & Index by :

Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1992-10 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Dissertation Abstracts International

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ISBN 13 :
Total Pages : 912 pages
Book Rating : 4.F/5 ( download)

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Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Science of Composite Interfaces

Author : R. G. Brandt
Publisher : Elsevier Science & Technology
ISBN 13 :
Total Pages : 334 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Science of Composite Interfaces by : R. G. Brandt

Download or read book Science of Composite Interfaces written by R. G. Brandt and published by Elsevier Science & Technology. This book was released on 1990 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Papers Presented at the ... Meeting

Author : American Chemical Society. Division of Polymer Chemistry
Publisher :
ISBN 13 :
Total Pages : 764 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Papers Presented at the ... Meeting by : American Chemical Society. Division of Polymer Chemistry

Download or read book Papers Presented at the ... Meeting written by American Chemical Society. Division of Polymer Chemistry and published by . This book was released on 1991 with total page 764 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Advanced Materials Testing

Author : Louise Ferrante
Publisher : CRC Press
ISBN 13 : 1482277611
Total Pages : 1036 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Handbook of Advanced Materials Testing by : Louise Ferrante

Download or read book Handbook of Advanced Materials Testing written by Louise Ferrante and published by CRC Press. This book was released on 1994-11-29 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work discusses techniques for developing new engineering materials such as elastomers, plastic blends, composites, ceramics and high-temperature alloys. Instrumentation for evaluating their properties and identifying potential end uses are presented.;The book is intended for materials, manufacturing, mechanical, chemical and metallurgical engi

Physics Briefs

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ISBN 13 :
Total Pages : 1170 pages
Book Rating : 4.3/5 (91 download)

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Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Surface-Enhanced Vibrational Spectroscopy

Author : Ricardo Aroca
Publisher : John Wiley & Sons
ISBN 13 : 9780470035658
Total Pages : 260 pages
Book Rating : 4.0/5 (356 download)

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Book Synopsis Surface-Enhanced Vibrational Spectroscopy by : Ricardo Aroca

Download or read book Surface-Enhanced Vibrational Spectroscopy written by Ricardo Aroca and published by John Wiley & Sons. This book was released on 2006-05-01 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art Offers interpretations of SEVS spectra for practicing analysts Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst