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GelsPolymersChromatography, GelChromatography, High Pressure LiquidChromatography, AffinityChromatography, Ion ExchangeMolecular WeightChromatographySkin AbsorptionMolecular Sequence DataKineticsPermeabilityElectrophoresis, Polyacrylamide GelAmino Acid SequenceChromatography, GasLanolinElectrophoresis, Gel, Two-DimensionalHydrogen-Ion ConcentrationChromatography, DEAE-CelluloseChromatography, LiquidChromatography, Thin LayerSolubilityChemical FractionationElectrophoresis, Gel, Pulsed-FieldAmino AcidsPolyestersPolyethylene GlycolsSubstrate SpecificityTemperatureElectrophoresis, Agar GelCarbohydrate SequenceDrug CarriersEscherichia coliDrug StabilityAdministration, CutaneousHydrolysisPolysaccharidesMass SpectrometryCattleCell Membrane PermeabilityOligosaccharidesMagnetic Resonance SpectroscopyGlucansUltracentrifugationProtein ConformationMacromolecular SubstancesRecombinant ProteinsBacterial ProteinsChemistryProtein BindingPeptide FragmentsChemical PhenomenaSwineCarbohydratesCarbohydrate ConformationRats, HairlessHot TemperatureCloning, MolecularCircular DichroismPeptidesTrypsinChemistry, PharmaceuticalGlycoside HydrolasesPolysaccharides, BacterialMolecular StructureMicroscopy, ElectronRadioimmunoassayIsoelectric PointSpecies SpecificityWaterChromatography, AgaroseStructure-Activity RelationshipLiverIsoelectric FocusingEnzyme StabilityBase SequenceDiffusionRabbitsPorosityRats, Inbred StrainsCells, CulturedAcrylic ResinsSepharoseAdministration, BuccalCarrier ProteinsMyristatesPolyvinylsParticle SizeGlycoproteinsBiopolymersExcipientsDrug Delivery SystemsElectrophoresisGas Chromatography-Mass SpectrometryMethylationMethylcelluloseBiocompatible MaterialsViscosityBinding SitesIons
Size-exclusion chroHPLCCharacterizationSpectroscopyLiquid ChromatographyDifferential scanning caSyntheticCharacterisationAnalytes on the basiViscosityNuclear MagneticType of chromatographyRefractive indexSynthesisColumn chromatographyDeterminationAnalyticalMonomerDetectorRange of polymersMixturesChemistryProteinsStudies of polymersPolystyreneNatural polymersAmorphous polymerSolventMoleculesAnalysisMonomersElutionSeparationsMassDetectionPreparativeConjugatesColloidTechniqueComplexationCompositionBiodegradableThermalProteinPlasticsTensileSamplesTemperatureFormulationsTacticityAnalyzeMechanismTechniquesHighPolymerizationScienceApplicationsReaction
Size-exclusion chro12
HPLC4
  • That is why scientists at the Fraunhofer Institute developed a fast and selective method for characterizing functionalized polyolefins with an approach based on high performance liquid chromatography (HPLC). (fraunhofer.de)
  • The scientists further developed the HPLC approach to obtain information on the degree of functionalization of polymer chains of different lengths (different molar mass), i.e. the relationship between MMD and CCD. (fraunhofer.de)
  • Combining HPLC with gel permeation chromatography (GPC) made it possible to separate PP-g-MA samples based on their chemical composition and then on their molar mass. (fraunhofer.de)
  • Characterisation of polymer-drug conjugates and targeted nanotherapeutics by High-performance Liquid Chromatography (HPLC), Gel Permeation Chromatography (GPC), Fourier-transform infrared spectroscopy (FTIR), Nuclear Magnetic Resonance (NMR), Dynamic Light Scattering/ Electrophoretic Light Scattering (DLS/ELS), and microscopy (electron microscopy and confocal microscopy). (ibecbarcelona.eu)
Characterization8
  • He has a background in the synthesis, characterization, processing, and application of polymeric materials such as organic conjugated polymers that are commonly used in applications such as organic electrodes, thin-film transistors, and bulk-heterojunction solar cells. (exponent.com)
  • Dr. DiTullio understands how the structure of polymeric materials influences their properties and has experience investigating materials using numerous polymer characterization and electrochemical analytical techniques, including voltammetry, amperometry, electrical conductivity measurements, spectroscopy (e.g. (exponent.com)
  • He also has experience with microscopy and surface characterization techniques, including SEM and confocal microscopy, profilometry, and interferometry that are often used to characterize polymer thin films. (exponent.com)
  • The Agilent InfinityLab GPC/SEC portfolio became even more comprehensive after the recent acquisition of Polymer Standard Service Ltd. (PSS), including a dedicated GPC/SEC Column Thermostat, a Multi-Angle Light Scattering Detector, the GPC/SEC-Ready Kit, and the powerful WinGPC Software into the already existing InfinityLab GPC/SEC Solutions for advanced material characterization. (agilent.com)
  • However, increasingly widespread use of more complex synthetic polymers and macromolecules of natural origin such as proteins and peptides, requires advanced characterization technologies to allow researcher gain a thorough understanding of their shape, structure and related physical properties. (labmanager.com)
  • Having the new application laboratories is particularly exciting because not only will we showcase our complete line of chromatography systems, we'll also feature Malvern's entire product offering of particle characterization and imaging systems, along with our rheometers. (powderbulksolids.com)
  • One of the workhorse techniques for polymer characterization is Gel Permeation Chromatography (GPC) which is used to measure molecular weight, molecular weight distribution, degree of branching, radius of gyration, solvent power, etc. (rudolphresearch.com)
  • GPC was one of the polymer characterization techniques brought to bear in this program. (rudolphresearch.com)
Spectroscopy6
  • The course will connect the synthetic routes to polymers to their eventual properties, such as molecular weight (determined through gel-permeation chromatography) and tacticity (determined by nuclear magnetic resonance spectroscopy). (manchester.ac.uk)
  • Extensive polymer analysis is conducted using a variety of analytical instruments such as gel permeation chromatography (GPC), oscillating disc rheometer (ODR), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), gas chromatography (GC), and moving disk rheometer (MDR). (plasticstoday.com)
  • Polymers (PPFMA) were characterized using nuclear magnetic resonance (NMR) spectroscopy and gel permeation chromatography. (iyte.edu.tr)
  • 100% of P(PFMA) active ester groups could be modified with AME at a polymer/AME/TEA mole ratio of 1/1/3, as determined by 1H-NMR spectroscopy. (iyte.edu.tr)
  • The polymers were examined by Fourier transform infrared spectroscopy, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, Shore hardness and tensile testing. (edu.pl)
  • The principal method used for the detection of diazinon or its metabolites in biological samples is gas chromatography (GC) using a flame photometric detector (FPD), a mass spectroscopy detector (MS), an electron capture detector (ECD), or a flame ionization detector (FID). (cdc.gov)
Liquid Chromatography10
  • The experimental design is not much different from other techniques of High Performance liquid chromatography. (wikipedia.org)
  • Liquid Chromatography as a Game-Changer in Measuring. (chromatographytoday.com)
  • Device for separating polyolefins using 2-dimensional high temperature liquid chromatography. (fraunhofer.de)
  • 1. Univariate method for background correction in liquid chromatography-Fourier transform infrared spectrometry. (nih.gov)
  • 2. New background correction approach based on polynomial regressions for on-line liquid chromatography-Fourier transform infrared spectrometry. (nih.gov)
  • 4. Application of point-to-point matching algorithms for background correction in on-line liquid chromatography-Fourier transform infrared spectrometry (LC-FTIR). (nih.gov)
  • 5. Cubic smoothing splines background correction in on-line liquid chromatography-Fourier transform infrared spectrometry. (nih.gov)
  • 6. Determination of critical eluent composition for polyethylenglycols using on-line liquid chromatography-Fourier transform infrared spectrometry. (nih.gov)
  • 9. On-line Fourier transform infrared spectrometric detection in gradient capillary liquid chromatography using nanoliter-flow cells. (nih.gov)
  • 19. Ultra-pressure liquid chromatography-electrospray tandem mass spectrometry for multiresidue determination of pesticides in water. (nih.gov)
Differential scanning ca1
  • All the polymers were fully characterized using differential scanning calorimetry, thermogravimetric analysis, and gel permeation chromatography analyses. (iith.ac.in)
Synthetic6
  • Viscotek Triple Detector Array includes viscometer, with 316 SS transducer construction, that provides viscosity and structural information for range of biomolecules and natural/synthetic polymers. (thomasnet.com)
  • The acquisition broadened Agilent׷ portfolio and offerings for the analysis of natural and synthetic polymers, including standards. (agilent.com)
  • The new HK Series Multi Detector GPC/SEC System from TESTA Analytical Solutions e.K. combines high-performance chromatographic detector technologies and powerful, yet easy to use software to unlock the secrets of even the most complex synthetic polymers and natural macromolecules. (labmanager.com)
  • Due to their properties, which can be broadly adjusted, and because they are manufactured from inexpensive raw materials, polyolefins are the most frequently used synthetic polymers. (fraunhofer.de)
  • The molecular weight of a synthetic polymer does not have a single value, since different chains will have different lengths and different numbers of side branches. (doitpoms.ac.uk)
  • Allows a better characterisation of synthetic and natural polymers and proteins in solution. (lu.se)
Characterisation4
Analytes on the basi1
Viscosity2
Nuclear Magnetic1
  • The synthesized polymers were characterized by gel permeation chromatography (GPC) and proton- nuclear magnetic resonance ( 1 H NMR) techniques. (ac.ir)
Type of chromatography2
Refractive index5
  • The instrument relies on small changes in refractive index due to the presence of polymer in a solvent (called the "mobile phase") to generate an "elution curve" as solution is pumped through a porous medium. (rudolphresearch.com)
  • Since polymers are large molecules, the solutions are extremely dilute so refractive index changes are small, on the order of 0.05% over the range of concentrations studied. (rudolphresearch.com)
  • The four plots below show refractive index measurements over a range of concentrations from 0 (pure solvent) to about 15 mg/mL for several polymers with different number of post-processing cycles. (rudolphresearch.com)
  • Anyone using Gel Permeation Chromatography (GPC) would benefit from this approach, which uses Refractive Index measurements to obtain a key GPC parameter. (rudolphresearch.com)
  • Testa Analytical Introduces an advanced detector package combining Multiple Angle Light Scattering and Differential Refractive Index (MALS/DRI) for more demanding Gel Permeation Chromatography (GPC/SEC) Applications. (labmate-online.com)
Synthesis5
  • Relate polymer structure and properties with synthesis method. (manchester.ac.uk)
  • Synthesis of polymer-drug conjugates and assembly into nanoparticle delivery systems. (ibecbarcelona.eu)
  • A key step in the polymer synthesis process is post-processing of a precursor polymer. (rudolphresearch.com)
  • The course starts with an introduction to the design and synthesis of polymers with define chemical structures. (gwc2.on.ca)
  • Synthesis of polymers with well-defined structures in terms of their architectures, chemical compositions, molecular weight etc. is a major concern of polymer chemistry. (gwc2.on.ca)
Column chromatography1
  • Concentration and 1987 greater purification by sweep co-distillation omentum) and Florisil/anhydrous sodium sulfate column chromatography. (cdc.gov)
Determination3
  • a) Determination of the proton content, b) determination of the rigid fraction in polymers (evaluation of the crystallinity). (unimib.it)
  • Explain important methodologies for characterising (co)polymers, including determination of molar mass and tacticity. (manchester.ac.uk)
  • 8. On-line gel permeation chromatography-attenuated total reflectance-Fourier transform infrared determination of lecithin and soybean oil in dietary supplements. (nih.gov)
Analytical3
  • The objective of this Analytical Ph.D project is to gain a better understanding of polymer microstructure, how it is possible to characterize specific polymers using the variety of techniques, the value of each of these techniques in exploring the physical and chemical microstructure and novel techniques for the visualization of polymer structure. (warwick.ac.uk)
  • Analytical chromatography uses smaller sample sizes and the primary objective of separating compounds is to identify their components. (atascientific.com.au)
  • By using the Rudolph Research Analytical J457 Laboratory Refractometer , Chromis was able to easily and quickly obtain the data required to answer a key question in their polymer development program and thereby maximize the benefit from their investment in a sophisticated GPC apparatus. (rudolphresearch.com)
Monomer1
  • Pentafluorophenyl methacrylate (PFMA) was chosen as an active ester monomer to produce polymers having functional groups available for further modification. (iyte.edu.tr)
Detector3
  • Detector Array characterizes polymers and proteins. (thomasnet.com)
  • 1998. Study of high-molecular weight compounds in sugar using gel-permeation chromatography with an evaporative light scattering detector. (springer.com)
  • Methyl (CH3-) and methylene (-CH2-) groups in the separated polymer samples are monitored at specific wavelengths via a filter-based infrared detector (IR5). (polymerchar.com)
Range of polymers2
  • We offer standards with precise individual molecular weights for a range of polymers, as well as custom polymer standards to speed up method development. (agilent.com)
  • This versatile system can be used to analyze a wide range of polymers, regardless of molecular weight range or solvent. (labmanager.com)
Mixtures2
  • Chromatography is a scientific process in separation science, the part of chemistry concerned with the separation of compounds and mixtures. (atascientific.com.au)
  • Just like the components of wine don't tell you the process by which it was made, recipes and mixtures go through a number of preparation processes that can't be reverse engineered through chromatography with a high degree of accuracy. (atascientific.com.au)
Chemistry3
  • Prior to joining Exponent, Dr. DiTullio was a Department of Defense National Defense Science and Engineering Graduate Research Fellow in the School of Chemistry & Biochemistry at Georgia Institute of Technology, where his work focused on the development of new polymers by tailoring their fundamental organic structures to control optoelectronic and redox properties. (exponent.com)
  • Polymer Chemistry", C. E. Carraher and R. B. Seymour, 6th ed. (manchester.ac.uk)
  • Es ist eine neuere Version 2023W dieser LV im Curriculum Master's programme Polymer Chemistry 2023W vorhanden. (jku.at)
Proteins1
Studies of polymers1
  • 10. On-line preferential solvation studies of polymers by coupled chromatographic-Fourier transform infrared spectroscopic flow-cell technique. (nih.gov)
Polystyrene3
  • Unfortunately, polystyrene tends to be a very linear polymer and therefore as a standard it is only useful to compare it to other polymers that are known to be linear and of relatively the same size. (wikipedia.org)
  • Highly crosslinked macroporous, spherical polystyrene - divinylbenzene polymer matrix with good mechanical stability. (mn-net.com)
  • The polymer molecular weights were determined against a polystyrene standard by gel permeation chromatography on either a Waters Associates 600 using Millenium 32 software or a Shimadzu chomatograph using EZSTART 7.2 software. (psu.edu)
Natural polymers1
  • Accordingly, there is a vast number of man-made and natural polymers, designed and synthesised to possess application-specific tailored architectures and properties to localise surface- or interface-bound properties. (mdpi.com)
Amorphous polymer2
  • In order to exploit the pharmacological potential of natural bioactive molecules with low water solubility, such as curcumin, it is necessary to develop formulations, such as amorphous polymer dispersions, which allow a constant release rate and at the same time avoid possible toxicity effects of the crystalline form of the molecule under scrutiny. (ibecbarcelona.eu)
  • The polymer is a specialized perfluorinated amorphous polymer. (rudolphresearch.com)
Solvent3
  • Analytes that are totally excluded, elute with the free volume outside around the particles (Vo), the total exclusion limit, while analytes that are completely delayed, elute with the solvent, marking the total permeation volume of the column, including also the solvent held inside the pores (Vi). (wikipedia.org)
  • A Russian botanist named Mikhail Tswett unearthed Chromatography in the early 1900s after discovering that ground-up plant material extracts produced different coloured solutions based on the type of solvent used in the extraction process. (atascientific.com.au)
  • This parameter varies widely among polymer/solvent systems. (rudolphresearch.com)
Molecules5
  • The principle of separation relies on the differential exclusion or inclusion of the macro molecules by the porous gel stationary phase. (wikipedia.org)
  • The inherent residence time distribution in autoclave based reactor systems leads to broad MWD due to differentiated (time) growth paths of the polymer molecules. (justia.com)
  • 1) Gel Permeation Chromatography requires that solutions be dilute to the point that polymer molecules do not interact. (rudolphresearch.com)
  • When studying a polymer, the most relevant average depends on the property being investigated: for example, some properties may be more affected by molecules with high molecular weight than those with low molecular weight, so the weight average is chosen since it highlights the presence of molecules with high molecular weight. (doitpoms.ac.uk)
  • The number average molecular weight is defined as the total weight of polymer divided by the total number of molecules. (doitpoms.ac.uk)
Analysis3
  • The technique is often used for the analysis of polymers. (wikipedia.org)
  • Our array of specialized GPC and SEC standards enhance your polymer analysis. (agilent.com)
  • The PV-based PAC was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of the MAC with hydroxyethyl methacrylate (HEMA), and further characterized by 1 H NMR and gel permeation chromatography (GPC) analysis. (nih.gov)
Monomers2
Elution1
  • If so, then GPC elution curves of polymers with different degrees of post-processing could not be compared directly and MW / MWD measurements would be less meaningful. (rudolphresearch.com)
Separations2
  • For polymer separations the pore sizes should be on the order of the polymers being analyzed. (wikipedia.org)
  • In order to expand the application space addressed by these polymers into separations, coatings, and others, Chromis embarked on a polymer development program. (rudolphresearch.com)
Mass1
  • This section should strictly be called "Polymer molecular mass", but in polymer science it is more common to refer to molecular weight than molecular mass, so this convention will be continued here. (doitpoms.ac.uk)
Detection2
  • Advanced chromatography is used in bomb detection. (atascientific.com.au)
  • The correlation between the ratio of CH3- to -CH2- groups and the average chemical composition of the investigated series of polymer samples as well as the reproducibility of the measurements and the limit of detection of the SEC-IR5 measurements are evaluated. (polymerchar.com)
Preparative1
Conjugates1
  • This work reports on polymer-antibiotic conjugates (PACs) as additives to resin-based restorative dental materials as a new strategy to convey sustained antibacterial character to these materials. (nih.gov)
Colloid1
  • Colloid & Polymer Science 267. (edu.pl)
Technique3
Complexation2
  • The aim of this work is to synthesize arginine-containing well-defined polymers via reversible addition-fragmentation chain transfer (RAFT) polymerization and perform preliminary investigation on the use of these polymers in nucleic acid complexation for potential gene therapy applications. (iyte.edu.tr)
  • Furthermore, the hydrodynamic diameter (Dh) of polymer/DNA complexes in phosphate buffer saline was found to be 58 nm, while the free DNA displayed a Dh of 109 nm, indicating the complexation of DNA by AME-modified P(PFMA). (iyte.edu.tr)
Composition2
  • Explain how to control molecular weight, molecular weight distribution, tacticity and copolymer composition in key polymerisation methods, and the resulting impact on polymer properties. (manchester.ac.uk)
  • O ur findings indicate that both polymer composition and protein corona on the surface are essential to determine the in vivo fate of polymersomes and tendency for specific organs. (bvsalud.org)
Biodegradable3
  • In this study, polymer dispersions of curcumin were obtained in PADAS, a biodegradable semicrystalline copolymer based on 1,12-dodecanediol, sebacic acid and alanine. (ibecbarcelona.eu)
  • A microsphere is claimed which includes at least one biodegradable polymer and at least one local anesthetic, wherein about 75% of the at least one local anesthetic is released by about 72 hours and from about 80% to about 90% of the at least one local anesthetic is released by about 120 hours, thereby relieving chronic pain for at least 28 days. (justia.com)
  • The microsphere includes at least one biodegradable polymer and at least one local anesthetic, wherein the at least one local anesthetic is released substantially linearly for approximately first 120 hours, thereby relieving chronic pain for at least 28 days. (justia.com)
Thermal1
  • All of the polymers exhibited a relatively good thermal stability. (edu.pl)
Protein1
  • It has proven to be effective in polymer, protein, and polysaccharide applications, earning a reputation as a trusted method. (labmate-online.com)
Plastics2
  • Also, it is important to note that this method is not the preferred method in the plastics or polymer industries. (roofingcontractor.com)
  • Spanning almost two decades, this collection of published research and development work in polymer science and plastics technology is a wealth of knowledge and information for anyone involved in plastics. (4spe.org)
Tensile1
  • It was observed that the polymers with the diol E showed higher hardness and tensile strengths but smaller elongations at break than diol H-based ones. (edu.pl)
Samples1
  • GPC is often used to determine the relative molecular weight of polymer samples as well as the distribution of molecular weights. (wikipedia.org)
Temperature1
  • Curcumin has significantly higher glass transition temperature Tg (≈ 347 K) than the polymer matrix (≈274-277 K depending on the molecular weight), and dispersions displayed Tg's intermediate between those of the pure amorphous components, implying that curcumin acts as an effective antiplasticizer for PADAS. (ibecbarcelona.eu)
Formulations2
  • The state-of-the-art facility becomes the center of excellence for research and development of new polymer modifiers, for optimization of existing products and formulations, and for process development to enhance productivity and improve product quality. (plasticstoday.com)
  • Polymers are ubiquitous in formulations because of their ability to structure at and control the characteristics of interfaces. (mdpi.com)
Tacticity1
  • The NMR spectra of polymers were recorded on a Bruker DPX 300 MHz spectrometer to determine the tacticity from triad distributions. (psu.edu)
Analyze1
  • It is often necessary to separate polymers, both to analyze them as well as to purify the desired product. (wikipedia.org)
Mechanism2
Techniques1
High5
  • As a by-product of sugar beet processing, additional sucrose can be recovered from high color SBE by recycling it from the chromatography system back into the crystallization unit. (springer.com)
  • By balancing more charges to the donor moiety, we could effectively switch a p-type polymer to high-performance n-type material. (nature.com)
  • These p-type polymers also exhibit fast response speed with the τ on / τ off less than 1/0.1 ms, which are beneficial for real-time high-speed sensing applications 4 . (nature.com)
  • However, too high a melt strength can cause gels and poor quality film, as well as potentially limiting drawdown capabilities to thinner gauges. (justia.com)
  • The ultra high molecular weight fraction present in autoclave, high melt strength resins complicates blending at the molecular scale, could give rise to gel formation in the resultant films, while it negatively affects the optical performance of the films. (justia.com)
Polymerization1
  • Gel permeation chromatography showed that, depending on the nature of p-quinone, macroinitiator polymers exhibit different activity in post-polymerization. (lookchem.com)
Science3
  • Dr. DiTullio is a chemist specializing in polymer science, polymer processing, and electrochemistry. (exponent.com)
  • Articles-reviews, opinions, and highlights, as well as new studies-are invited for any area of science or technology involving polymer adsorption, from both experimental and theoretical perspectives. (mdpi.com)
  • Encyclopediaof Polymers Science and Technology. (edu.pl)
Applications6
  • Metrohm expands Ion Chromatography technical and applications support team. (chromatographytoday.com)
  • Intuitive process to help you select the right chromatography column for your biopharmaceutical applications. (agilent.com)
  • MALS enjoys widespread use, and has one benefit, as the extrapolation exercise applied for the molecular weight calculation also leads to the generation of radius of gyration data which can be important for certain polymer applications. (laboratorytalk.com)
  • Polypropylene is increasingly being used as a structural load-bearing polymer in durable applications. (4spe.org)
  • Thus, there is a need for new compositions containing ethylene-based polymers, such as tubular LDPEs, that have an optimized balance of melt strength, optical and mechanical properties, for blown film applications. (justia.com)
  • Chromis Technologies manufactures polymer optical fibers which are used in a line of Active Optical Cables (AOC) for datacenter and audiovisual applications. (rudolphresearch.com)
Reaction1
  • vii) Polyester resins (including alkyd-type), as the basic polymers, formed as esters of acids listed in paragraph (b)(3)(vii)( a ) and ( b ) of this section by reaction with alcohols in paragraph (b)(3)(vii)( c ) and ( d ) of this section. (fda.gov)