Rakesh K. Gupta

Ph.D., Delaware

Professor and Chair

George & Carolyn Berry Chair

Joined Faculty in 1991

Phone: (304) 293-9342

E-Mail: rakesh.gupta@mail.wvu.edu


    Dr. Gupta's research is directed mainly at understanding the (non-Newtonian) flow behavior of polymer solutions, polymer melts, solid-in-liquid suspensions and emulsions. In addition to explaining observed phenomena, the knowledge gained is of use in modeling operations used to process these materials. Consequently, one can relate process conditions to structure and the structure to properties. This allows one to engineer materials with enhanced properties. Such an approach has been employed to examine and modify such diverse materials as fiber-reinforced plastics, lubricants, wall joint compounds, thermal grease, ceramic slurries, polymer blends, wood/plastic composites and nanocomposites. Current work is related to mixing and emulsification of processed foods, the development of drilling fluids for deep hole drilling for oil and gas, the use of polymers for carbon dioxide capture, explaining the barrier properties of graphene-based nanocomposites and understanding the flammability properties of polymer-matrix composites.


Selected Publications


A.P. Shah, R.K. Gupta, H.V.S. GangaRao and C.E. Powell, “Moisture diffusion through vinyl ester nanocomposites made with montmorillonite clay,” Polym. Eng. Sci., 42, 1852-1863 (2002).


S. Agarwal and R.K. Gupta, “An innovative extensional viscometer for low-viscosity and low-elasticity liquids,” Rheol. Acta, 41, 456-460 (2002).


A.D. Drozdov, J. deC. Christiansen, R.K. Gupta and A.P. Shah, “Model for anomalous moisture diffusion through a polymer-clay nanocomposite,” J. Polym. Sci.: Part B: Polym. Phys., 41, 476-492 (2003).


A. Ait-Kadi, M. Grmela, R.K. Gupta and V. Zmievski, “Rheological measurements and modeling of noncolloidal particulate suspensions,” Chapter 5 in G. Shonaike and S.G. Advani (Eds.), Advanced Polymeric Materials: Structure Property Relationships, CRC Press, Boca Raton, FL, pp. 181-208 (2003).


H.T. Rana, R.K. Gupta, H.V.S. GangaRao and L.N. Sridhar, “Measurement of moisture diffusivity through layered-silicate nanocomposites,” AIChE J., 51, 3249-3256 (2005).


A. Al-Mulla and R.K. Gupta, “Recycling mixed plastics from end-of-life electronics,” Proc. SPE Global Plastics Environmental Conference, Feb 28 - March 2, 2006, Atlanta, GA (Paper E2 on CD).


L.N. Sridhar, R.K Gupta and M. Bhardwaj, “Barrier properties of polymer nanocomposites,” I&EC Res., 45, 8282-8289 (2006).


S.-K. Yeh, A. Al-Mulla and R. K. Gupta, “Effect of coupling agent on the properties of PNC-based wood/plastic composites,” J. Polym. Eng., 26, 783-804 (2006).


M.C. Costache, M.J. Heidecker, E. Manias, R.K. Gupta and C.A. Wilkie, “Benzimidazolium surfactants for modification of clayus for use with styrenic polymers,” Polym. Degradation Stability, 92, 1753-1762 (2007).


M.C. Costache, M.J. Heidecker, E. Manias, G. Camino, A. Frache, G. Beyer,  R.K. Gupta and C.A. Wilkie, “The influence of carbon nanotubes, organically modified montmorillonites and layered double hydroxides on the thermal degradation and fire retardancy of polyethylene, ethylene-vinyl acetate copolymer and polystyrene,” Polymer, 48, 6532-6545 (2007).


Q. Liu, D. DeKee and R.K. Gupta, “Models of moisture diffusion through vinyl ester/clay nanocomposites, AIChE J., 54, 364-371 (2008).


D.L. Statler, Jr. and R.K. Gupta, “Relating nanoclay dimensions and arrangement to barrier properties of polymer nanocomposites,” Proc. Soc. Plast. Eng. ANTEC, May 4-7, 2008, Milwaukee, WI, pp 163-167.


S.-K. Yeh and R.K. Gupta, “Improved wood-plastic composites through better processing,” Composites: Part A, 39, 1694-1698 (2008).


S. Agarwal, M.M.K. Khan and R.K. Gupta, “Thermal conductivity of polymer nanocomposites made with carbon nanofibers”, Polym. Eng. Sci., 48, 2474-2481 (2008).


S. Agarwal, R.K. Gupta and D. Doraiswamy, “A model for the collision efficiency of shear induced agglomeration involving polymer bridging”, Coll. Surfaces A: Physicochem. Eng. Aspects, 345, 224-230 (2009).


S.-K. Yeh and R.K. Gupta, “Nanoclay-reinforced, polypropylene-based wood-plastic composites,” Polym. Eng. Sci., 50, 2013-2020 (2010).

R. Liang, L. Han, D. Doraiswamy and R.K. Gupta, The rheology of aramid platelet suspensions, Polym. Eng. Sci., 51, 1933-1941 (2011).


P. Mukhopadhyay and R.K. Gupta, Trends and frontiers in graphene-based polymer nanocomposites, Plastics Engineering, 67, 32-42 (January 2011).


D. Song, W. Zhang, R.K. Gupta and E.G. Melby, Role of operating conditions in determining droplet size and viscosity of tackifier emulsions formed via phase inversion, AIChE J., 57, 96-106 (2011).


L. Han, D. Doraiswamy and R.K. Gupta, Jetting of dilute polymer solutions, J. Therm. Anal. Calorim., 106, 305-312 (2011).


T.-W. Liu, C.R. Youngstrom, S. Agarwal, A. Al-Mulla, S. Gaggar and R.K. Gupta, Novel biomass-based “Eco-FR” styrenic blends, Polymeric Materials: Science and Engineering, Preprints of the PMSE Division of ACS, vol 106, 87-88 (2012).


E. Roth, S. Agarwal and R.K. Gupta, Nanoclay-based solid-amine sorbents for carbon dioxide capture, Proc. 29th Annual International Pittsburgh Coal Conference, October 15-18, 2012, Pittsburgh, PA (6 pages on CD).


D. Song,  and R.K. Gupta, The use of thermosets in the building and construction industry, in Q. Guo (Ed.), Thermosets, Woodhead Publishing, Cambridge, U.K., 2012, pp. 165-188).


S.-K. Yeh, K.-J. Kim and R.K. Gupta, Synergistic effect of coupling agents on polypropylene-based wood-plastic composites, J. Appl. Polym. Sci.,127, 1047-1053 (2013).


S. Iruvanti, R.K. Gupta and E. Ruckenstein, "Stable, high solids, high thermal conductivity pastes," U.S. Patent 5,098,609 (Issued: March 24, 1992).

R.K. Gupta and S. Agarwal, “A sensitive, spin-line type extensional viscometer for mobile liquids employing very small liquid volumes.”  U.S. patent No. 7,114374 issued October 3, 2006.

S.K. Gaggar, T.-W. Liu, R.K. Gupta, S. Agarwal and A. Al-Mulla, Flame retardant resinous compositions and process, U.S. patent No. 7,939,585 B2, issued May 10, 2011.


R.K. Gupta, S. Agarwal and E.A. Roth, Nanoclay-based solid sorbents for Carbon Dioxide capture, US Non-Provisional (utility) patent application filed in US Patent and Trademark Office on 11/01/2012. Application No. 13/666,375.


R.K. Gupta, “Polymer and Composite Rheology," 2nd ed., Revised and Expanded, Marcel Dekker, New York, 2000, 390 pp. ISBN # 0-8247-9922-4

A. Kumar and R.K. Gupta, "Fundamentals of Polymer Engineering," 2nd ed., Revised and Expanded, Marcel Dekker, New York, 2003, 693 pp. ISBN # 0-8247-0867-9.

R.K. Gupta, E.B. Kennel and K.-J. Kim (Eds.), Polymer Nanocomposites Handbook, CRC Press, Boca Raton, FL, 2010, 549 pp.  ISBN #978-0-8493-9777-6.

P. Mukhopadhyay and R.K. Gupta (Eds.), Graphite, Graphene and their Polymer Nanocomposites, CRC Press, Boca Raton, FL, 2013, 609 pages, ISBN #  978-1-4398-2779-6.