聚合物微发泡材料加工和成型，聚合物功能发泡材料， 石墨烯制备和改性。

W.T. Zhai, J. Yu, L.C. Wu, W.M. Ma, J.S. He, Heterogeneous nucleation uniformizing cell size distribution in microcellular nanocomposites foams, Polymer, 2006, 47, 7580.

W.T. Zhai, J. Yu, W.M. Ma, J.S. He, Effect of long-chain branching on the crystallization and melting of polycarbonates in supercritical CO2, Macromolecules, 2007, 40, 73.

W.T. Zhai, J. Yu, H.Y. Wang, J.Y. Dong, J.S. He. Producing the polystyrene and poly(methyl methacrylate) graft isotactic polypropylene copolymer microcellular foams using supercritical CO2: Influence of phase behavior on foaming behavior of polymer, Polymer, 2008, 49, 3146.

W.T. Zhai, J. Yu, J.S. He, Ultrasonic irradiation enhanced cell nucleation: An effective approach to microcellular foams of both high cell density and expansion ratio, Polymer, 2008, 49, 2340.

W.T. Zhai, T. Kuboki, L. Wang, C.B. Park, E.K. Lee, H. Naguib, Cell structure evolution and the crystallization behavior of PP/clay nanocomposites foams blown in continuous extrusion, Ind. Eng. Chem. Res. 2010. 49, 9834.

W.T. Zhai, Y.W. Kim, C.B. Park, Steam-chest molding of EPP foams: Part 1. DSC simulation of bead foam processing, Ind. Eng. Chem. Res. 2010. 49. 9822.

W.T. Zhai, Y.W. Kim, D.W. Jung, C.B. Park, Steam-Chest Molding of Expanded Polypropylene Foams: Part 2. The Mechanism of Inter-Bead Bonding, Ind. Eng. Chem. Res. 2011, 50, 5523.

W.T. Zhai, C.B. Park, M. Kontopoulou, Nano-Silica Addition Dramatically Improves the Cell Morphology and Expansion Ratio of Polypropylene Heterophasic Copolymer Foams Blown in Continuous Extrusion, Ind. Eng. Chem. Res. 2011, 50, 7282.

B. Shen, W.T. Zhai*, C. Chen, D.D. Lu, J. Wang, W.G. Zheng*, Melt Blending In-Situ Enhances the Interaction Between Polystyrene and Graphene Through π-π Stacking, ACS Appl. Mater. Inter., 2011, 3, 3103.

J. Wang, W.T. Zhai*, J.Q. Ling, B. Shen, W.G Zheng*, C.B. Park, Ultrasonic Irradiation Enhanced Cell Nucleation in Microcellular Poly(Lactic Acid): A Novel Approach to Uniformize Cell Structure and Increase Foam Expansion, Ind. Eng. Chem. Res. 2011, 50, 13840.

W.T. Zhai*, W.W. Feng, J.Q. Ling, W.G. Zheng, Fabrication of Lightweight Microcellular Polyimide Foams with Three-Dimensional Shape by CO2 Foaming and Compression Molding, Ind. Eng. Chem. Res. 2012, 51,12827-12834.

B. Shen, D.D. Lu, W.T. Zhai*, W.G. Zheng*, Synthesis of graphene via low-temperature exfoliation and reduction of graphite oxide under ambient atmosphere, J. Mater. Chem. C, 2013, 1, 50-53.

J.Q. Ling, W.T. Zhai*, W.W. Feng, B. Shen, J.F. Zhang, W.G. Zheng, Facile preparation of lightweight microcellular polyetherimide/graphene composites foams for electromagnetic interference (EMI) shielding, ACS Appl. Mater. Interfaces 2013, 5, 2677-2684.

B. Shen, W.T. Zhai*, M.M. Tao, J.Q. Ling, W.G. Zheng*,Lightweight Multifunctional Polyetherimide Graphene@Fe3O4 Composite Foams for Shielding of Electromagnetic Pollution. ACS Appl. Mater. Interfaces 2013, 5, 11383-11391.

X.Q. Lan, W.T. Zhai*, W.G. Zheng*, Critical effects of polyethylene addition on the autoclave foaming behavior of polypropylene and the melting behavior of polypropylene foams blown with n-pentane and CO2, Ind. Eng. Chem. Res. 2013, 52, 5655-5665.

G.Y. Ji, W.T. Zhai*, D.P. Lin, W.G. Zheng, D.W. Jung. Microcellular foaming of PLA/Silica nanocomposites in compressed CO2: Critical influence of crystallite size on cell morphology and foam expansion, Ind. Eng. Chem. Res. 2013, 52, 6390-6398.

Q. Ren, J.J. Wang, W.T. Zhai*, S.P. Su, Solid State Foaming of Poly(lactic acid) Blown with Compressed CO2: Influences of Long Chain Branching and Induced Crystallization on Foam Expansion and Cell Morphology, Ind. Eng. Chem. Res. 2013, 52, 13411-13421.