2 edition of Mass spectrometric investigation of some polymer degradations. found in the catalog.
Mass spectrometric investigation of some polymer degradations.
MSc thesis, Chemistry.
For copolymer analysis, this is a powerful tool to measure polymer composition and assess the distribution of the composition. The 3-D ion trap-time-of-flight mass spectrometer (LCMS-IT-TOF) is used to analyze the mass of components eluting Author: Scott Kuzdzal. Mass Spectrometric Studies of Oxides N. S. Jacobson Structures and Materials Division, NASA Glenn Research Center, Cleveland, OH USA Current studies at NASA Glenn on oxide thermodynamics are discussed. Previous studies on the vaporization of B 2 O 3 in reducing atmospheres led to inconsistent studies when B was used as a reductant. Title: Mass spectrometric detection of short-living radicals produced by a plasma needle: Authors: Stoffels, E.; Aranda Gonzalvo, Y.; Whitmore, T. D.; Seymour, D. L.; Rees, J. A. Affiliation: AA(Department of Biomedical Engineering, Eindhoven University of Technology, PO Box , MB Eindhoven, The Netherlands), AB(Plasma and Surface Analysis Division, Hiden . Mass spectrometric techniques are critical in ____ research because it is possible to analyze constituents of large macromolecular assemblies. MALDI-TOF. The advantage to ____-____ protein synthesis is that the desired product is bound to beads and excess reagents can be easily removed at each step.
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Mass Spectrometric Investigation of the Thermal Decomposition of Polymers1 By Leo A. Wall The application of the mass spectrometer to the study of the thermal decomposition of polymers is described.
The relationships between the structure of polymers and yield of monomers on decomposition are discussed. A quantitative treatment relating the com. Nina Aminlashgari Minna Hakkarainen Emerging Mass Spectrometric Tools for Analysis of Polymers and Polymer Additives Wolfgang Buchberger Martin Stiftinger Analysis of Polymer Additives and Impurities by Liquid Chromatography/Mass Spectrometry and Capillary Electrophoresis/Mass Spectrometry Jale Hacaloglu Direct Insertion Probe Mass Spectrometry.
New interesting mass spectrometric techniques have arrived and there have been further developments in the existing methods that have opened up new possibilities for the analysis of increasingly complex polymer structures and compositions.
Some of the most interesting emerging techniques for polymer analysis are briefly reviewed in this by: 9. Mass Spectrometry (MS) has rapidly become an indispensable tool in polymer analysis, and modern MS today complements in many ways the structural data provided by Nuclear Magnetic Resonance (NMR) and Infrared (IR) methods.
Recent advances have sparked a growing interest in this field and established a need for a summary of progress made and. Mass Spectrometry of Polymers – New Techniques (Advances in Polymer Science ()) [Hakkarainen, Minna] on *FREE* shipping on qualifying offers.
Mass Spectrometry of Polymers – New Techniques (Advances in Polymer Science ())Format: Hardcover. Introduction. Radical chemistry is a powerful method of forming both intra-molecular (a), (b), (c) and inter-molecular C–C bonds on the solid-phase.
These reactions have been mediated by a variety of reagents such as tributyltin hydride (TBTH) (a), (c), triethylborane and diethylzinc, but there is still a need for new, cost effective, non-toxic radical chain carriers Cited by: 1.
The gaseous products of radiolysis were analysed on an MKh mass spectrometer. The mass spectra of the compounds under study were taken on a Jms C mass spectro- meter, with direct introduction (to the feed tube).
Mass spectrometer resolution, ionizing voltage 70 V, ionization current /~A, accelerating voltage 10 by: 1.
Recently De Maria et al. (ref. 1) made a high temperature, molecular-beam mass spectrometric investigation of the vapor phase in thermodynamic equilibrium with the yttrium-carbon condensed system.
Over the temperature range from to K, yttrium (Y) and yttrium dicarbide (YC,) were reported to be important species in the vapor : F. Kohl, C. Stearns. Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher Mass‐Spectrometric Investigation of the Primary Processes in the Photodissociation of 1,3‐Butadiene Some results concerning the original excited state and fragment Cited by: 8.
The binary packages. The libpolyxmass and polyxmass-bin packages contain code that is exclusively written in the C dependencies of the GNU polyxmass software are described in Figure Figure1.
maintain a clean separation between low-level code and graphical user interface high-level code, the software project is organized in two distinct code Cited by: 9.
The Dynamic Response of Polymer Melts Subjected to Shear from the Quiescent State BRYCE MAXWELL Chapter 8, DOI: /bach Publication Date (Print):. Secondary ion mass spectrometric investigation of penetration of coconut and mineral oils into human hair fibers: relevance to hair damage.
Ruetsch SB(1), Kamath YK, Rele AS, Mohile RB. Author information: (1)TRI/Princeton, Princeton, NJby: crimination against low-mass oligomers in MALDI experiments. Solubility of the polymer in a suitable solvent and miscibility between the polymer and matrix solutions is important for a successful characterization by MALDI.
Detergents37 can be used to enhance or to aid the miscibility of the polymer and matrix Size: KB. Mass-Spectrometric Analysis of Water Desorption upon Polyurethane Wear in Vacuum. polymer, wear, wa ter, mass-spectrometry, Mass-Spectrometric Investigation. Article. In his book, the internationally renowned expert, Michael Przybylski, provides a comprehensive overview of this still relatively young methodology, which will soon be as much an integral part of polymer structural analysis as X-rays and NMR : $ The utility of a new mass spectrometric technique for detecting and identifying peptide by-products pro- duced in the synthesis of peptides is demonstrated.
The technique involves three sequential steps: (1) practi- cally nondestructive Cf plasma desorption mass spectrometric analysis of monolayer amounts of the. New inlet and vacuum ionization methods provide advantages of specificity, simplicity and speed for the analysis of synthetic polymers and polymer additives directly from surfaces such as fibers using mass spectrometry (MS) on different commercial mass spectrometers (Waters SYNAPT G2, Thermo LTQ Velos).
Characterization of Polymer Membranes by MALDI Mass-Spectrometric Imaging Techniques Article in Analytical Chemistry 85(10) April with 45 Reads How we measure 'reads'. We have developed a new method to estimate the permeation coefficient of gases through polymer membranes.
A fixed volume of gas is put in a gas cell and introduced into ultrahigh vacuum. After positioning the gas cell to face a quadrupole mass spectrometer, the partial pressure of the gases are measured as function of by: book will be useful to both novices and experienced practitioners in polymer MS.” Unquestionably, they have achieved this objective.
Mass Spectrometry of Poly-mers is highly recommended to anyone engaged in polymer science or in mass spectrometry of polymeric materials.
J Am Soc Mass Spectrom13, – BOOK REVIEW Cited by: Surface and Thin Film Analysis with Electron and Mass Spectrometric Techniques A. Wucher Fachbereich Physik, Universität Kaiserslautern D Kaiserslautern Abstract We give a short overview of recent analytical techniques for compositional surface analysis and the determination of concentration depth profiles.
More specifically, the. Mass spectrometric estimation of gas permeation coe ﬃcients for thin polymer membranes Holger Nörenberg∗a, T. Miyamotob,arab, G. Smitha a aUniversity of Oxford, Department of Materials, Parks Road, Oxford, OX1 3PH, United KingdomCited by: Pair your accounts.
Export articles to Mendeley. Get article recommendations from ACS based on references in your Mendeley library. How a quadrupole mass filter works This is a very, very simple handwavy explanation of a complicated device.
A quadrupole is a set of four rods with a space down the middle. The ions enter this space. The rods are electrically connected to each other in opposite pairs.
A (U) voltage (changing as afunction of. Information on the outgassing properties of a number of plastic materials has been obtained by the use of a bakeable mass spectrometer.
This was fitted with vacuum locks to avoid affecting the residual gas compositions by introduction of the by: Common Mass Spectrometry Contaminants and their Sources The contaminant information below is taken from "Interferences and contaminants encountered in modern mass spectrometry" Bernd O.
Keller, Jie Sui, Alex B. Young and Randy M. Whittal Analytica Chimica Acta,Issue1, 3 OctoberPages REPEATING UNITS, positive mode. Liquid extraction surface analysis mass spectrometry (LESA -MS) is a direct analysis method suitable for the analysis of polymers.
It is based on a fast and efficient extraction of polymer components, such as non-intentionally added species (NIAS), post-polymerization residues, or additives, and residues resulting from specific uses followed by their MS : Ambre Issart, Joanna Szpunar.
secondary ion mass spectrometry (SIMS), etc., in this paper, we categorize according to applications of MS for polymer analysis.
Even this choice is arbitrary. The main chapters are focused on New Techniques and Principles, Polymer Synthesis, Copolymer Analysis, Fragmenta-tion Techniques, Polymer Degradation, and Polymer Surface and Size: KB. OPs are both GC-MS and LC-MS/MS amenable and the choice often depends upon instrument availability, what other pesticide chemical classes are analyzed for and whether there is a need to also analyze degradation products or metabolites of OPs [9, 12, 13].In general, a greater diversity of OPs has been analyzed simultaneously by GC-MS or GC-MS/MS methods as compared to Cited by: 2.
The work detailed herein describes the developments made using new mass spectrometric techniques for the structural characterisation of synthetic polymers. Electron-based tandem mass spectrometry techniques Electron Induced Dissociation (EID) and Hot Electron Capture Dissociation (HECD) have proven to be highly effective methods of characterising synthetic.
development and application of mass spectrometric methods for the determination of maillard reaction products in foodstuffs doctoral thesis masspektrometrisko metoŽu izstrĀde un pielietoŠana maijĀra reakcijas produktu noteikŠanai pĀrtikĀ promocijas darbs iveta pugajeva scientific supervisors:dr.
chem. vadims bartkevičs. On 10th Decemberthe Environmental Chemistry Group and the Molecular Physics Group of the Institute of Physics co-organised a half-day meeting to discuss recent applications and developments of soft chemical ionisation mass spectrometric techniques in the field of environmental sciences, with a focus on the areas of atmospheric chemistry and physics.
uncertainty in mass assignments above m/z is placed at +, e.g. uncertainty in m/z is + 5. If, however, it is assumed that the type of ions formed above m/z with the mass, and samples are the same as those formed with the mass sample, the mass assignments at all. Polymer Analysis by Mass Spectrometry Mass spectrometry (MS) has become an indispensable tool for polymer analysis and has been widely used to study: polymer structure, polymer composition, molecular weight and molecular weight distribution, bulk and surface properties, impurity content, and so on.
MS based on accurate mass measurement and. some problems • Isobaric interferences occur as a result of the isotopic composition of various elements (can also occur from oxide formation, doubly charged ions, and combination products with Ar) • e.g.: mass 48 for both Ti and Ca; can correct for the Ca contribution by measuring 44Ca and subtract of.
1 Ambient Ionisation Mass Spectrometry for the Characterisation of Polymers and Polymer Additives Martin R. Paine1*, Philip J. Barker2, and Stephen J. Blanksby1 1ARC Centre of Excellence for Free Radical Chemistry and Biotechnology, School of Chemistry, University of Wollongong, Wollongong NSWAustralia.
Electrospray ionization mass spectrometry (ESI-MS) is a powerful tool for the end-group analysis of synthetic polymers. The ESI process is particularly soft, by which macromolecules can be subjected to mass spectrometric analysis without fragmentation and even loosely bound end-group functionalities may fully be retained in the ionized molecule.
Dr Mark Blitz from the School of Chemistry at the University of Leeds then discussed Unravelling kinetics and mechanisms of atmospheric reactions using soft ionisation TOF-MS, and introduced his work using vacuum-ultraviolet (VUV) photoionisation coupled to time-of-flight mass spectrometry, where pulsed laser radiation at nm has been used to study the laboratory.
The project will utilise ion mobility mass spectrometry (IMMS) to investigate the shape and size of complexes of the bacterial replisome.
The replisome is a giant complex of proteins that efficiently copies the chromosome. 20 Tiebe C, Hübert T, Koch B et al. Investigation of gaseous metabolites from moulds by ion mobility spectrometry (IMS) and chromatography-mass spectrometry (GC–MS).
Int. Ion. Mobil. Spectrom. 13, 17–24 ().Crossref, CAS, Google Scholar; 21 Stashenko E, Martínez JR. Gas chromatography-mass spectrometry. In: Advances in Gas Cited by:. Quantitation of Amino Acids and Amines by Chromatography: Methods and Protocols - Ebook written by Ibolya Molnár-Perl.
Read this book using Google Play Books app on your PC, android, iOS devices. Download for offline reading, highlight, bookmark or take notes while you read Quantitation of Amino Acids and Amines by Chromatography: Methods and /5(3).1 Mass Analysis Gene Hart-Smith and Stephen J.
Blanksby Introduction When judging the suitability of a given mass analyzer toward the investigation of a In the context of polymer analysis, the mass resolving power is important when.A new functionalized fullerene-glycidyl azide polymer (CGAP) was synthesized for the first time using a modified Bingel reaction of fullerene (C60) and bromomalonic acid glycidyl azide polymer ester (BM-GAP).
The product was characterized by Fourier transform infrared (FTIR), ultraviolet-visible (UV-Vis), and nuclear magnetic resonance spectroscopy (NMR) by: 9.