Search Results - "Koelling, Kurt W"
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1
A Review of CO2 Applications in the Processing of Polymers
Published in Industrial & engineering chemistry research (10-12-2003)“…The use of supercritical carbon dioxide as a processing solvent for the physical processing of polymeric materials is reviewed. Fundamental properties of…”
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Journal Article -
2
Shear and extensional rheology of carbon nanofiber suspensions
Published in Rheologica acta (01-07-2005)“…The morphology and rheology of carbon nanofiber (CNF) suspensions were studied. The CNFs, produced by decomposing organic vapors at elevated temperature in the…”
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3
High shear microfluidics and its application in rheological measurement
Published in Experiments in fluids (01-02-2005)“…High shear rheology was explored experimentally in microchannels (150-150 mu m). Two aqueous polymer solutions, polyethylene oxide (viscoelastic fluid) and…”
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4
Shear Viscosity of CO2-Plasticized Polystyrene Under High Static Pressures
Published in Industrial & engineering chemistry research (03-06-2009)“…High-pressure shear viscosity measurements of polymer/supercritical fluid systems are numerous, but most involve pressure-gradient equipment such as a…”
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Journal Article -
5
Shear and extensional rheology and flow-induced orientation of carbon nanofiber/polystyrene melt composites
Published in Journal of applied polymer science (15-02-2011)“…The rheological behavior and morphology of polystyrene/carbon nanofiber (PS/CNF) composites in their melt phase have been characterized through experimental…”
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6
Processing and properties of polymeric nano-composites
Published in Polymer engineering and science (01-11-2001)“…Polymeric nano‐composites are prepared by melt intercalation in this study. Nano‐clay is mixed with either a polymer or a polymer blend by twin‐screw…”
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7
Hot embossing in microfabrication. Part I: Experimental
Published in Polymer engineering and science (01-03-2002)“…The relationship among processing conditions, material properties, and part quality in hot embossing was investigated for three optical polymers: polycarbonate…”
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8
Steady flow simulation of a polymer-diluent solution through an abrupt axisymmetric contraction using internally consistent rheological scaling
Published in Journal of applied polymer science (15-10-2007)“…In this work, a new methodology is developed that describes the viscoelastic scaling of a polymer‐physical foaming agent (PFA) solution in a detailed and…”
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9
Hot embossing in microfabrication. Part II: Rheological characterization and process analysis
Published in Polymer engineering and science (01-03-2002)“…The dynamic shear viscosity and the transient extensional viscosity of polycarbonate (PC), polymethyl methacrylate (PMMA), and polyvinyl butyral (PVB) were…”
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10
Non‐isothermal gas‐assisted displacement of viscous Newtonian fluids at high capillary number in gas‐assisted injection molding
Published in Polymer engineering and science (01-07-2021)“…Gas‐assisted injection molding is a polymer processing technology in which a penetrating gas bubble hollows out a plastic part as it cools and solidifies…”
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11
Effect of die temperature on the morphology of microcellular foams
Published in Polymer engineering and science (01-06-2003)“…A study on the extrusion of microcellular polystyrene foams at different foaming temperatures was carried out using CO2 as the foaming agent. The contraction…”
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12
Classical Nucleation Theory Applied to Homogeneous Bubble Nucleation in the Continuous Microcellular Foaming of the Polystyrene−CO2 System
Published in Industrial & engineering chemistry research (19-08-2009)“…In the continuous production of microcellular thermoplastic foam, a polymer−physical foaming agent (PFA) solution is subjected to a rapid pressure drop through…”
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13
The thickness of the tear film
Published in Current eye research (01-10-2004)“…Measurements of the thickness of the pre-corneal tear film, pre-lens tear film, post-lens tear film, and the lipid layer on the surface of the tear film are…”
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14
Extrusion of polystyrene nanocomposite foams with supercritical CO2
Published in Polymer engineering and science (01-06-2003)“…Intercalated and exfoliated polystyrene/nano‐clay composites were prepared by mechanical blending and in situ polymerization respectively. The composites were…”
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15
Comparison of the Gelatinization Behavior of Organic and Conventional Spelt Starches Assessed by Thermal and Rheological Analyses
Published in Journal of agricultural and food chemistry (12-09-2012)“…The objective of this study was to compare gelatinization properties and molecular composition of starches extracted from locally grown organic and…”
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Journal Article Conference Proceeding -
16
CO2 bubble nucleation in polystyrene: Experimental and modeling studies
Published in Journal of applied polymer science (05-08-2012)“…Polymer foams are used extensively in a variety of applications. A firm understanding of bubble nucleation is vital to predict foam properties based on process…”
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17
Analysis of a liquid-assisted molding process for coating microchannels with an ultraviolet curable polymer
Published in Polymer engineering and science (01-07-2012)“…Injection molding can be altered to form hollow parts by partially pre‐filling a mold with polymer melt and then injecting a gas into the mold before cooling…”
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18
Fabrication and use of a transient contractional flow device to quantify the sensitivity of mammalian and insect cells to hydrodynamic forces
Published in Biotechnology and bioengineering (20-11-2002)“…A microfluidic device was fabricated via photolithographic techniques which can create transient elongational and shear forces ranging over three orders of…”
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19
Rheological analysis of polyvinyl butyral near the glass transition temperature
Published in Polymer engineering and science (01-02-2001)“…In many polymer manufacturing operations, the material is processed near the glass transition temperature (Tg). Examples are thermoforming, blow molding, film…”
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Journal Article -
20
Experimental investigation and numerical simulation of injection molding with micro-features
Published in Polymer engineering and science (01-05-2002)“…Injection molding of thin plates of micro sized features was studied in order to manufacture micro‐fluidic devices for bioMEMS applications. Various types of…”
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