Search Results - "Lohse, David"
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QUANTITATIVE BIOGEOGRAPHY: Large-Scale, Long-Term Change in the Rocky Intertidal Region of the California Current Large Marine Ecosystem
Published in Oceanography (Washington, D.C.) (01-09-2019)“…Biogeographical research has long sought to document current and past species’ distributions through descriptive studies, but in recent decades this field has…”
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Biogeographical patterns of rocky intertidal communities along the Pacific coast of North America
Published in Journal of biogeography (01-09-2008)“…Aim: Our aim in this paper is to present the first broad-scale quantification of species abundance for rocky intertidal communities along the Pacific coast of…”
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Synthesis of Well-Defined Second (G-2) and Third (G-3) Generation Dendritic Polybutadienes
Published in Macromolecules (27-06-2006)“…A series of well-defined second (G-2) and third (G-3) generation dendritic polybutadienes (PBd) were synthesized by the coupling of the living G-2 and G-3…”
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The application of neutron scattering to the relation between chain dimensions and miscibility for polyolefins
Published in Polymer journal (01-01-2013)“…A method is described that can predict the way the great majority of polyolefins mix with each other just based on knowledge of their chemical architecture…”
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Linear and Nonlinear Rheology of Dendritic Star Polymers: Experiment
Published in Macromolecules (09-12-2008)“…The stress relaxation dynamics of a series of second and third generation dendritic star polymers have been investigated experimentally in the linear regime…”
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Packing Length Influence in Linear Polymer Melts on the Entanglement, Critical, and Reptation Molecular Weights
Published in Macromolecules (05-10-1999)“…We have shown in previous studies that the entanglement molecular weight for a polymer melt, M e, is related by a power law to p, the packing length of the…”
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Well-Defined Comb, Star−Comb, and Comb-on-Comb Polybutadienes by Anionic Polymerization and the Macromonomer Strategy
Published in Macromolecules (14-06-2005)“…Stryrenic macromonomers of polybutadienes (sMMB) were synthesized by selective reaction of living polybutadienes with the silyl chloride group of…”
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Synthesis and Characterization of Complex Macromolecular Architectures Based on Poly(α-olefins) Utilizing a Cs-Symmetry Hafnium Metallocene Catalyst in Combination with Atom Transfer Radical Polymerization (ATRP)
Published in Macromolecules (12-04-2011)“…Herein we describe the synthesis of block and graft copolymers made from several higher α-olefins, and in some cases styrene and methyl methacrylate, through…”
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Morphology Development in Model Polyethylene via Two-Dimensional Correlation Analysis
Published in Macromolecules (13-09-2011)“…Two-dimensional (2D) correlation analysis is applied to synchrotron X-ray scattering data to characterize morphological regimes during nonisothermal…”
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Damping Behavior of Entangled Comb Polymers: Experiment
Published in Macromolecules (24-02-2009)“…The stress relaxation dynamics of entangled polyisoprene comb polymers were investigated, specifically under nonlinear step deformations, in order to identify…”
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Quantification of Branching in Model Three-Arm Star Polyethylene
Published in Macromolecules (24-01-2012)“…The versatility of a novel scaling approach in quantifying the structure of model well-defined 3-arm star polyethylene molecules is presented. Many commercial…”
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Linear and Star Block Copolymers of Styrenic Macromonomers by Anionic Polymerization
Published in Macromolecules (28-06-2005)“…We describe the synthesis of a number of linear and star block copolymers where at least one block consists of a polymacromonomer (molecular brush). The key to…”
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Linear rheology of comb polymers with star-like backbones : melts and solutions
Published in Rheologica acta (01-12-2006)“…We investigate the linear rheology of model star-comb homopolymers consisting of star-like backbone chains with grafted branches. We show that the tube-based…”
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A Study of the Separation Principle in Size Exclusion Chromatography
Published in Macromolecules (01-06-2004)“…Size exclusion chromatography (SEC) separates polymer molecules according to their size in dilute solution, but what size to use has been a matter of debate…”
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Effect of Short-Chain Branching on the Rheology of Polyolefins
Published in Macromolecules (04-04-2006)“…A series of carefully synthesized ethylene/butene copolymers (0.2−0.85 mole fraction butene) were synthesized using metallocene catalysts to probe the…”
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Relative quantification of long chain branching in essentially linear polyethylenes
Published in European polymer journal (01-02-2008)“…The aim of this work is to describe a method whereby low levels of long chain branching, LCB, can be quantified on a relative basis for whole, unfractionated,…”
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Prediction of Melt State Poly(α-olefin) Rheological Properties: The Unsuspected Role of the Average Molecular Weight per Backbone Bond
Published in Macromolecules (31-12-2002)“…It has previously been shown that the entanglement molecular weight (M e) and the plateau modulus ( ) of flexible polymers can be correlated to the unperturbed…”
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Synthesis and Morphological Behavior of Model Linear and Miktoarm Star Copolymers of 2-Methyl-1,3-Pentadiene and Styrene
Published in Chemistry of materials (20-05-2003)“…Three linear diblock copolymers (PS-b-P2MP), two 3-miktoarm [PS(P2MP)2] copolymers, and two 4-miktoarm star copolymers [PS(P2MP)3] of styrene (S) and…”
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Synthesis and Morphological Behavior of Model 6-Miktoarm Star Copolymers, PS(P2MP)5, of Styrene (S) and 2-Methyl-1,3-Pentadiene (P2MP)
Published in Chemistry of materials (18-04-2006)“…Three 6-miktoarm star (6μ-star) copolymers [PS(P2MP)5] of styrene (S) and 2-methyl-1,3-pentadiene (2MP) were synthesized by anionic polymerization and…”
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Similarities between Gelation and Long Chain Branching Viscoelastic Behavior
Published in Macromolecules (08-05-2001)“…Very low levels of long chain branching (LCB) are known to have large effects on the rheological behavior of polymers. These effects are essential to the…”
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