Quantcast
Channel: Polymers Research Group Technical Report Series
Browsing all 37 articles
Browse latest View live

Normal Stress Differences in Large-Amplitude Oscillatory Shear Flow for...

Title: Normal Stress Differences in Large-Amplitude Oscillatory Shear Flow for Dilute Rigid Dumbbell Suspensions Authors: Schmalzer, Andrew M.; Bird, R. Byron; Giacomin, A. Jeffrey Abstract: We examine...

View Article



Large-Amplitude Oscillatory Shear: Comparing Parallel-Disk with Cone-Plate Flow

Title: Large-Amplitude Oscillatory Shear: Comparing Parallel-Disk with Cone-Plate Flow Authors: Giacomin, A. Jeffrey; Gilbert, Peter H.; Merger, Dimitri; Wilhelm, Manfred Abstract: We compare the ratio...

View Article

Orientation in Large-Amplitude Oscillatory Shear

Title: Orientation in Large-Amplitude Oscillatory Shear Authors: Schmalzer, Andrew M.; Giacomin, A. Jeffrey Abstract: We examine the simplest relevant molecular model for large-amplitude oscillatory...

View Article

Slip Heating in Die Drool with Viscous Dissipation

Title: Slip Heating in Die Drool with Viscous Dissipation Authors: Gilbert, Peter H.; Giacomin, A. Jeffrey Abstract: Plastics can build-up on the die lip during extrusion. This phenomenon is called die...

View Article

Wall Slip Heating

Title: Wall Slip Heating Authors: Gilbert, Peter H.; Giacomin, A. Jeffrey Abstract: When molten plastic is extruded, the upper limiting throughput is often dictated by fine irregular distortions of the...

View Article


Exact Analytical Solution for Large-Amplitude Oscillatory Shear Flow

Title: Exact Analytical Solution for Large-Amplitude Oscillatory Shear Flow Authors: Saengow, Chaimongkol; Giacomin, A. Jeffrey; Kolitawong, Chanyut Abstract: When polymeric liquids undergo...

View Article

Padé Approximants for Large-Amplitude Oscillatory Shear Flow

Title: Padé Approximants for Large-Amplitude Oscillatory Shear Flow Authors: Giacomin, A. Jeffrey; Saengow, Chaimongkol; Guay, Martin; Kolitawong, Chanyut Abstract: Analytical solutions for either the...

View Article

Fourier Decomposition of Polymer Orientation in Large-Amplitude Oscillatory...

Title: Fourier Decomposition of Polymer Orientation in Large-Amplitude Oscillatory Shear Flow Authors: Giacomin, A. Jeffrey; Gilbert, Peter H.; Schmalzer, Andrew M. Abstract: In our previous work, we...

View Article


Extruding Plastic Pipe From Eccentric Dies

Title: Extruding Plastic Pipe From Eccentric Dies Authors: Saengow, Chaimongkol; Giacomin, A. Jeffrey; Kolitawong, Chanyut Abstract: To solidify plastic pipe, the pipe is transported through a long...

View Article


Die Drool and Polymer Degradation

Title: Die Drool and Polymer Degradation Authors: Hoy, Geoffrey S.; Giacomin, A. Jeffrey; Gilbert, Peter H. Abstract: Die drool is an operational problem associated with polymer extrusion. Extrudate...

View Article

Chain Extended Poly(3--hydroxybutyrate) With Improved Rheological Properties...

Title: Chain Extended Poly(3--hydroxybutyrate) With Improved Rheological Properties and Thermal Stability, Through Reactive Modification in the Melt State Authors: Kolahchi, Ahmad Rezaei; Kontopoulou,...

View Article

Reflections on Inflections

Title: Reflections on Inflections Authors: Saengow, Chaimongkol; Giacomin, A. Jeffrey; Gilbert, Peter H.; Kolitawong, Chanyut Abstract: In plastics processing, the single most important rheological...

View Article

Temperature Rise in a Verging Annular Die

Title: Temperature Rise in a Verging Annular Die Authors: Younes, Georges R.; Giacomin, A. Jeffrey; Gilbert, Peter H. Abstract: Plastic pipes, tubes or catheters are extruded by pressure‑driven flows...

View Article


Polymer Fluid Dynamics: Continuum and Molecular Appoaches

Title: Polymer Fluid Dynamics: Continuum and Molecular Appoaches Authors: Bird, R. Byron; Giacomin, A. Jeffrey Abstract: To solve problems in polymer fluid dynamics, one needs the equation of...

View Article

Bubble Growth From First Principals

Title: Bubble Growth From First Principals Authors: Saengow, Chaimongkol; Giacomin, A. Jeffrey; Wu, Xianghong; Kolitawong, Chanyut; Aumnate, Chuanchom; Mix, Adam W. Abstract: We consider the simplest...

View Article


Molecular Origins of Higher Harmonics in Large-Amplitude Oscillatory Shear...

Molecular Origins of Higher Harmonics in Large-Amplitude Oscillatory Shear Flow: Shear Stress Response Gilbert, Peter H.; Giacomin, A. Jeffrey Recent work has focused on deepening our understanding of...

View Article

Macromolecular Origins of Fifth Shear-Stress Harmonic in Large-Amplitude...

Macromolecular Origins of Fifth Shear-Stress Harmonic in Large-Amplitude Oscillatory Shear Flow Jbara, Layal M.; Gilbert, Peter H.; Giacomin, A. Jeffrey This study examines the simplest relevant...

View Article


Transport Phenomena in Eccentric Cylindrical Coordinates

Transport Phenomena in Eccentric Cylindrical Coordinates Gilbert, Peter H.; Saengow, Chaimongkol; Giacomin, A. Jeffrey Studies in transport phenomena have been limited to a select few coordinate...

View Article

Plastic Pipe Solidification: Exact Solutions in Cylindrical Coordinates

Plastic Pipe Solidification: Exact Solutions in Cylindrical Coordinates Saengow, Chaimongkol; Poungthong, P.; Kolitawong, Chanyut; Giacomin, A. Jeffrey For polymer melt solidification in plastic pipe...

View Article

Complex Polymer Orientation

Complex Polymer Orientation Gilbert, Peter H. Previously, we explored the dynamics of a dilute suspension of rigid dumbbells as a model for polymeric liquids in large-amplitude oscillatory shear (LAOS)...

View Article
Browsing all 37 articles
Browse latest View live




Latest Images