Search Results - "Brüll, Robert"
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Solubility of Polyethylene in n‑Hexane and Cyclohexane: Experimental Determination and Comparison with Solid–Liquid Equilibria-Based Predictions
Published in Industrial & engineering chemistry research (20-10-2021)“…In polyethylene (PE) production, the slurry process, in which the polymer is suspended as a slurry in a diluent, is particularly relevant. In the slurry state,…”
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2
Solvent Selection for Liquid Adsorption Chromatography of Ethylene–Propylene–Diene Terpolymers by Combining Structure–Retention Relationships and Hansen Solubility Parameters
Published in Industrial & engineering chemistry research (27-04-2022)“…Liquid adsorption chromatography (LAC) of polyolefins has seen a remarkable growth since its inception, but studies focusing on the polyolefin elastomer…”
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3
Critical conditions for liquid chromatography of statistical polyolefins: Evaluation of diene distribution in EPDM terpolymers
Published in Analytica chimica acta (15-03-2023)“…Liquid chromatography at critical conditions is of interest as it may unravel molecular information on macromolecular structures not accessible by any other…”
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4
Reactive Extrusion Synthesis of Biobased Isocyanate-Free Hydrophobically Modified Ethoxylated Urethanes with Pendant Hydrophobic Groups
Published in ACS sustainable chemistry & engineering (05-09-2022)“…Development of hydrophobically modified ethoxylated urethane (HEUR) rheology modifiers enabled the widespread application of waterborne paints and coatings,…”
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Separation of Branched Poly(bisphenol A carbonate) Structures by Solvent Gradient at Near-Critical Conditions and Two-Dimensional Liquid Chromatography
Published in Analytical chemistry (Washington) (17-04-2018)“…Branching is a molecular metric that strongly influences the application properties of polymers. Consequently, detailed information on the microstructure is…”
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Correlation between Comprehensive 2D Liquid Chromatography and Monte Carlo Simulations for Branched Polymers
Published in Macromolecules (10-07-2018)“…Detailed knowledge on structural information is required to derive the rheological properties of branched polymers. Size-exclusion chromatography with…”
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Characterization of ethylene-propylene copolymers with high-temperature gradient adsorption liquid chromatography and CRYSTAF
Published in Journal of applied polymer science (05-12-2011)“…Blends of linear polyethylene (PE) and isotactic polypropylene (iPP) with different average molar masses and a series of ethylene‐propylene (EP) copolymers…”
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Characterization of the Chemical Composition Distribution of Ethylene/1-Alkene Copolymers with HPLC and CRYSTAF-Comparison of Results
Published in Macromolecular chemistry and physics (01-04-2015)“…A series of copolymers of ethylene with propene, 1‐hexene, 1‐octene, and 1‐octadecene is characterized by size‐exclusion chromatography (SEC), nuclear magnetic…”
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Liquid Chromatography at Critical Conditions of Poly(propylene)
Published in Macromolecular chemistry and physics (01-11-2015)“…Liquid chromatography at critical conditions (LCCC) of poly(propylene) (PP) holds unique potential to further augment the understanding of molecular…”
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10
review on the development of liquid chromatography systems for polyolefins
Published in Journal of separation science (01-11-2010)“…Polyolefins are the most widely produced synthetic polymer commodity and are found in countless applications ranging from bottles, packaging films to…”
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Investigating the Morphological Variations Due to Processing and Thermomechanical Treatment of Poly(propylene) Using Raman Microscopy
Published in Macromolecular chemistry and physics (01-05-2016)“…Differences in the Raman spectrum of the α‐ and β‐polymorph of poly(propylene) (PP) have been identified in the form of band shifts distinct for the specific…”
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12
Separation of short-chain branched polyolefins by high-temperature gradient adsorption liquid chromatography
Published in Analytical and bioanalytical chemistry (01-02-2011)“…A new separation principle was recently introduced into the analytical characterization of polyolefins by researchers from the German Institute for Polymers in…”
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13
Studying Binary Solvent Mixtures as Mobile Phase for Thermal Gradient Interactive Chromatography (TGIC) of Poly(ethylene-stat-1-octene)
Published in Industrial & engineering chemistry research (01-10-2014)“…Thermal gradient interactive chromatography (TGIC) is an emerging analytical tool to determine the chemical composition distribution of polyolefins. TGIC…”
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14
Elution Behavior of Polypropylene with Different Tacticity - An Overview
Published in Macromolecular symposia. (01-10-2015)“…Summary High‐temperature liquid chromatography (HT‐HPLC) using solvent gradients enables to separate polypropylene (PP) according to tacticity. Varying the…”
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15
Elution behavior of polyethylene and polypropylene standards on carbon sorbents
Published in Journal of Chromatography A (03-12-2010)“…The elution behavior of linear polyethylene and isotactic, atactic and syndiotactic polypropylene was tested using three different carbon column packings:…”
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High-Temperature Solvent Gradient Liquid Chromatography of Model Long Chain Branched Polyethylenes
Published in Macromolecular symposia. (01-10-2015)“…Summary The high‐temperature solvent gradient liquid chromatography system 1‐decanol/1,2,4‐trichlorobenzene/porous graphite HypercarbTM has been applied to the…”
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17
Separation of Ethylene−Vinyl Acetate Copolymers by High-Temperature Gradient Liquid Chromatography
Published in Macromolecules (24-07-2007)“…Ethylene−vinyl acetate (EVA) copolymers can be semicrystalline or amorphous materials, depending on their chemical composition. A variety of different methods…”
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18
Carbonaceous sorbents for high-temperature interactive liquid chromatography of polyolefins
Published in Journal of separation science (01-07-2013)“…The elution behavior of polyethylene (PE) and the three stereoisomers of polypropylene (PP) was studied on porous graphite along with three other carbon‐based…”
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Multiple-Injection Method in High-Temperature Two-Dimensional Liquid Chromatography (2D HT-LC)
Published in Macromolecular chemistry and physics (01-02-2014)“…Comprehensively characterizing the relationship between the distributions with regard to chemical composition (CCD) and molar mass (MMD) of polyolefins is…”
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Analysing the Chemical Composition Distribution of Ethylene-Acrylate Copolymers: Comparison of HT-HPLC, CRYSTAF and TREF
Published in Macromolecular chemistry and physics (22-09-2008)“…HT‐HPLC is an attractive technique to analyse CCD of olefin copolymers and offers the possibility to shorten analysis times compared to fractionation…”
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