Joseph Royer

NCSU
Department of Chemical Engineering
Kenan CO2 Center
1017 Main Campus Drive
Suite 3500
Raleigh, NC 27606

phone: (919) 513 1654
fax: (919) 513 1655
email: jrroyer@eos.ncsu.edu
Projects    Publications & Presentations    Directory of all NSF students

Projects:
 
High pressure polymer melt rheology: Rheometer design (extrusion slit die and magnetically levitated sphere rheometer), Measurement, and Modeling.

 

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Publications & Presentations:

    Publications:  

S. A. Khan, J. R. Royer, S. R. Raghavan; 
"Rheology: Tools and Methods,"  in Aviation Fuels with Improved Fire Safety; National Research Council, National Academy Press, Washington, 1997

S. M. Gross, R. D. Givens, M. Jikei, J. R. Royer, S. A. Khan, J . M DeSimone; 
"Synthesis and Swelling of Poly(bisphenol-A-carbonate) Using Supercritical CO2 ; " Macromolecules 31(25), 9099-9092, 1998.

C. U. Bhatt, J. R. Royer, C. R. Hwang, S. A. Khan; "Compressive Stress Relaxation of Metallocene-Based Polyolefin Foams: Effect of Gamma-Ray-Induced Cross-linking;" J. Polym. Sci: B Polym. Phys..; 37, 1045-1056, 1999.

T. A. Walker, S. R. Raghavan, J. R. Royer, S. D. Smith, G. D. Wignall, Y. Melnichenko, S. A. Khan, R. J. Spontak; 
"Enhanced Miscibility of Low-Molecular-Weight Polystyrene/Polyisoprene Blends in Supercritical CO2 ;" J  Phys. Chem. B., 103(26), 5472-5476, 1999.

J. R. Royer, J. M. DeSimone, S. A. Khan;
 " Carbon-Dioxide-Induced Swelling of Poly(dimethylsiloxane); " Macromolecules 32(26), 8965-8973, 1999

 J. A. McCormick, J. R. Royer, C. R. Hwang, S. A. Khan; "Rheological Investigation of the Enhanced Mechanical Properties of Metallocene Polyolefins Following Silane Grafting and Oxidative Crosslinking;" Submitted to J. Polym. Sci. B Polym. Phys..

J. R. Royer, Y. J. Gay, J. M. DeSimone, S. A. Khan; 
"High Pressure Rheology of Polystyrene Melts Plasticized with CO2 : Experimental Measurement & Predictive Scaling Relationships, " Submitted to Macromolecules.

Y. J. Gay, S. Siripurapu, J. R. Royer, J. M. DeSimone, R. J. Spontak, S. A. Khan;
 "Generation of Microcellular Foams of PVDF/PMMA Blends Using Supercritical Carbon Dioxide in a Continuous Process," Submitted to Macromolecules.

J. R. Royer, Y. J. Gay, J. M. DeSimone, S. A. Khan; 
"Novel High-Pressure Levitated Sphere Rheometer;" In preparation.

 Presentations:

J. R. Royer, J. M. DeSimone, S. A. Khan; " CO2 - induced Plasticization of Polymer Melts: Swelling Kinetics, Diffusion, and Solubility;" AIChE National Meeting Miami Beach, FL; 1998

J. R. Royer, Y. J. Gay, J. M. DeSimone, S. A. Khan; "Rheological Investigations of Polystyrene Melts Plasticized by CO2 ;" United Engineering Foundation conference on Supercritical Fluids in materials Processing and Synthesis; Davos, Switzerland, September 1999

J. R. Royer, J. M. DeSimone, S. A. Khan; "Swelling of Polymer Melts with Supercritical Carbon Dioxide;"  United Engineering Foundation conference on Supercritical Fluids in materials Processing and Synthesis; Davos, Switzerland, September 1999

J. R. Royer, Y. J. Gay, J. M. DeSimone, S. A. Khan; " Rheological Investigation of CO2 - Induced Plasticization of Polymer Melts;" AIChE National Meeting, Dallas, TX; November 1999.

J. R. Royer, Y. J. Gay, J. M. DeSimone, S. A. Khan; "Rheological Devices for Measurement of Polymeric Melts with Dissolved Supercritical Carbon Dioxide Under Hig-Pressure;" International Syposium on Supercritical Fluids; Atlanta, GA; April 2000

S. Siripurapu, Y. J. Gay, J. R. Royer, J. M. DeSimone, R. J. Spontak and S. A. Khan; "Microcellular Polymeric Foams Produced in Supercritical Carbon Dioxide;" MRS Spring 2000 Meeting: San Francisco, CA; April 2000.

J. R. Royer, J. M. DeSimone, S. A. Khan, "Carbon Dioxide-Induced Plasticization of Polymer Melts: Rheology and Rheometer Design;" 4th Annual Green Chemistry and Engineering Conference: National Academy of Sciences, Washington, D. C.; June 27-29, 2000

 

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last update: February 07, 2001

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