Wilkie Research Group

 

Books

 

S. Al-Malaika, A. Golovoy, and C. A. Wilkie, Eds., Chemistry and Technology of Polymer Additives, Blackwell Science, 294 pages, 1999.

A. Grand and C. A. Wilkie, Eds., Fire Retardancy of Polymeric Materials, Marcel Dekker, New York, 572 pages, 2000.

G. L. Nelson and C. A. Wilkie, Eds., Fire and Polymers: Materials and Solutions for Hazard Prevention, Oxford University Press, 2001, 380 pp.

S. Al-Malaika, A. Golovoy, and C. A. Wilkie, Eds., Specialty Polymer Additives, Blackwell Science, 484 pages, 2001.

M. Le Bras, C.A. Wilkie and S Bourbigot, Eds. S. Duquesne and C. Jama, Co-Eds.,  Fire Retardancy of Polymers: New Applications of Mineral Fillers, Royal Society of Chemistry, 2005, 416 pages.

C.A. Wilkie and G.L. Nelson, Fire and Polymers: Materials and Concepts for Hazard Prevention, ACS Symposium Series 922,  Oxford University Press, 421 pages, 2006.

General Nanocomposites

Jin Zhu and Charles A. Wilkie, "Thermal and Fire Studies on Polystyrene-Clay Nanocomposites," Polymer International, 49, 1158-1163 (2000).

Jin Zhu, Alexander B. Morgan, Frank J. Lamelas, and Charles A. Wilkie, "Fire Properties of Polystyrene-Clay Nanocomposites," Chem. Mater., 13, 3774-3780 (2001).

Adams Tidjani and Charles A. Wilkie, "Photooxidation of Polymeric-inorganic nanocomposites: Chemical, Thermal Stability and Fire Retardancy Investigations," Polym. Degrad. Stab., 74, 33-37 (2001).

Jin Zhu, Fawn Uhl, Alexander B. Morgan, Charles A. Wilkie, "Studies on the mechanism by which the formation of nanocomposites enhance thermal stability," Chem. Mater., 13, 4649-4654 (2001).

Jin Zhu, Paul Start, Kenneth A. Mauritz, and Charles A. Wilkie, "Thermal stability and flame retardancy of PMMA-clay nanocomposites," Polym. Degrad. Stab., 77, 253-258 (2002).

Jin Zhu, Paul Start, Kenneth A. Mauritz, and Charles A. Wilkie, "Silicon-Methoxide-Modified Clays and their Polystyrene Nanocomposites," J. Polym. Sci. Part A: Polym. Chem., 40, 1498-1503 (2002).

Hongyang Yao, Jin Zhu, Alexander B. Morgan and Charles A. Wilkie, "Crown Ether Modified Clays and Their Polystyrene Nanocomposites," Polym. Eng. Sci., 42, 1808-1814 (2002).

Dongyan Wang, Daniel Parlow, Qiang Yao and Charles A. Wilkie, "PVC-Clay nanocomposites: Preparation, Thermal and Mechanical Properties," J. Vinyl Add Tech., 7, 203-213 (2001).

Dongyan Wang, Daniel Parlow, Qiang Yao and Charles A. Wilkie, "Melt Blending of PVC-Sodium Clay Nanocomposites," J. Vinyl Add. Tech., 9, 139-150 (2002).

Dongyan Wang and Charles A. Wilkie, "Preparation of PVC- Clay Nanocomposites by Solution Blending," J. Vinyl Add.Tech., 8, 238-245 (2002).

Dongyan Wang, Jin Zhu, Qiang Yao,and Charles A. Wilkie,  "A Comparison Of Various Methods For The Preparation Of Polystyrene And Poly(Methyl Methacrylate) Nanocomposites," Chem. Mater., 14, 3837-3843 (2002).

Shengpei Su and Charles A. Wilkie, " Exfoliated Poly(Methyl Methacrylate) and Polystyrene/ Nanocomposites Occur when the Clay Cation Contains a Vinyl Monomer," J. Polym. Sci: Part A: Polym. Chem., 41, 1124-1135 (2003).

Dongyan Wang and Charles A. Wilkie, “In situ reactive blending to prepare polystyrene-clay and polypropylene-clay nanocomposites,” Polym. Degrad. Stab., 80, 171-182 (2003).

Jinguo Zhang and Charles A. Wilkie, “Preparation and flammability properties of polyethylene-clay nanocomposites,” Polym. Degrad. Stab., 80, 163-169 (2003).

Serge Bourbigot, Jeffrey W. Gilman, David L. VanderHart, Walid H. Awad, Rick D. Davis, Alexander B. Morgan, and Charles A. Wilkie, “ Investigation of nanodispersion in polystyrene-montmorillonite nanocomposites by solid state NMR,” J. Polym Sci Part B: Polym Phys., 41, 3188-3213 (2003).

Dongyan Wang, David D. Jiang, Jaclyn Pabst, Zhidong Han, Jianqi Wang, and Charles A. Wilkie, “Polystyrene Magadiite Nanocomposites,” Polym. Eng. Sci, 44, 1122-1131 (2004).

Serge Bourbigot, Jeffrey W. Gilman and Charles A. Wilkie, “Kinetic Analysis of the Thermal Degradation of Polystyrene-Montmorillonite Nanocomposite,”  Polym. Degrad. Stab., 84, 483-492 (2004).

Panchatapa Jash and Charles A. Wilkie, “Effects of Surfactants on the Thermal and Fire Properties of Poly(Methyl Methacrylate)/Clay Nanocomposites,” Polym. Degrad. Stab., 88, 401-406 (2005).

Everson Kandare, Grace Chigwada, Dongyan Wang, Charles A. Wilkie, and Jeanne M. Hossenlopp, “Nanostructured layered copper hydroxyl dodecyl sulfate: A potential fire retardant for poly(vinyl ester) (PVE),” Polym. Degrad. Stab., 91, 1781-1790 (2006).

Marius C. Costache, M. J. Heidecker, E. Manias and Charles A. Wilkie, “Preparation and Characterization of Poly(Ethylene Terephtalate)/Clay Nanocomposites by Melt Blending using Thermally Stable Surfactants, Polym. Adv. Tech., 17, 764-771 (2006).

Jinguo Zhang, Rakesh K. Gupta, and Charles A. Wilkie, “Controlled Silylation of Montmorillonite and its Polyethylene Nanocomposites,” Polymer, 47, 4537-4543 (2006).

Graphite systems

 

Fawn M. Uhl and Charles A. Wilkie, "Polystyrene/Graphite Nanocomposites: Effect on Thermal Stability," Polym. Degrad. Stab., 76, 111-122 (2002).

Fawn M. Uhl and Charles A. Wilkie, ” Preparation of Nanocomposites from Styrene and Modified Graphite Oxides,” Polym. Degrad. Stab., 84, 215-226 (2004).

Fawn M. Uhl, Qiang Yao, and Charles A. Wilkie, “Formation of nanocomposites of Styrene and its Copolymers using Graphite as the Nanomaterial,” Polymers Adv. Tech., 16, 533-540 (2005).

Fawn M. Uhl, Qiang Yao, Hiroyoshi Nakajima, E. Manias and Charles A. Wilkie, “Expandable Graphie/Polyamide-6 Nanocomposites,” Polym. Degrad. Stab., 89, 70-84 (2005).

TGA/FTIR Studies

 

Shengpei Su and Charles A. Wilkie, “The Thermal Degradation of Nanocomposites That Contain an Oligomeric Ammonium Cation on the Clay,” Polym. Degrad. Stab., 83, 347-362 (2004).

Shengpei Su, David D. Jiang, and Charles A. Wilkie, “Study of the thermal stability of Polystyryl surfactants and its modified clay nanocomposites,” Polym. Degrad. Stab., 84, 269-277 (2004).

BokNam Jang and Charles A. Wilkie, “A TGA/FTIR and Mass Spectral Study on the Thermal Degradation of Bisphenol A Polycarbonate,” Polym. Degrad. Stab., 86, 419-430 (2004).

BokNam Jang and Charles A. Wilkie, “The Thermal degradation of Bisphenol A Polycarbonate in Air,” Thermochim Acta,  426, 73-84 (2005).

Bok Nam Jang and Charles A. Wilkie, “The Effects Of Triphenylphosphate and Recorcinolbis(Diphenylphosphate) on the Thermal Degradation Of Polycarbonate in Air,” Thermochim. Acta, 433, 1-12 (2005).

Nanocomposites with fire retardants

Marco Zanetti, Giovanni Camino, Domenico Canavese, Alexander B. Morgan, Frank J. Lamelas, and Charles A. Wilkie, "Fire Retardant Halogen-Antimony-Clay Synergism in Polypropylene Layered Silicate Nanocomposites," Chem. Mater., 14, 189-193 (2002).

Grace Chigwada and Charles A. Wilkie, ” Synergy Between Conventional Phosphorus Fire Retardants and Organically-Modified Clays can Lead to Fire Retardancy Of Styrenics,” Polym. Degrad. Stab., 81, 539-550 (2003).

Grace Chigwada, Panchatapa Jash, David D. Jiang, and Charles A. Wilkie, “Synergy Between  Nanocomposite Formation and Low Levels of Bromine on Fire Retardancy in Polystyrenes,” Polym. Degrad. Stab., 88, 382-393 (2005).

Grace Chigwada, Panchatapa Jash, David D. Jiang, and Charles A. Wilkie, “Fire Retardancy of Vinyl Ester Nanocomposites: Synergy with Phosphorus-Based Fire Retardants,” Polym. Degrad. Stab., 89, 85-100 (2005).

Dongyan Wang, Kandice Echols, and Charles A. Wilkie, “Cone calorimetric and Thermogravimetric Analysis Evaluation of Halogen-Containing Polymer nanocomposites,” Fire & Materials, 29, 283-294(2005).

Jinguo Zhang and Charles A. Wilkie, “Fire Retardancy of Polyethylene-AluminaTrihydrate Containing Clay as a Synergist,” Polym. Adv. Tech., 16, 549-553 (2005).

Everson Kandare, Grace Chigwada, Dongyan Wang, Charles A. Wilkie, and Jeanne M. Hossenlopp, “Probing Synergism, Antagonism, and Additive Effects in Poly(vinyl ester) (PVE) Composites with Fire Retardants,” Polym. Degrad. Stab., 91, 1209-1218 (2006).

High Throughput Studies

Gilman, J. W.; Bourbigot, S.; Shields, J. R.; Nyden, M. R.; Kashiwagi, T.; Davis, R. D.; VanderHart, D. L.; Demory, W.; Wilkie, C. A.; Morgan, A. B.; Harris, J.; Lyon, R. E “High Throughput Methods for Polymer Nanocomposites Research: Extrusion, NMR Characterization and Flammability Property Screening” J Mater Sci.  38, 4451-4460 (2003).

Grace Chigwada and Charles A. Wilkie, ” Synergy Between Conventional Phosphorus Fire Retardants and Organically-Modified Clays can Lead to Fire Retardancy Of Styrenics,” Polym. Degrad. Stab., 81, 539-550 (2003).

Grace Chigwada, Panchatapa Jash, David D. Jiang, and Charles A. Wilkie, “Fire Retardancy of Vinyl Ester Nanocomposites: Synergy with Phosphorus-Based Fire Retardants,” Polym. Degrad. Stab., 89, 85-100 (2005).

Charles A. Wilkie, Grace Chigwada, Jeffery W. Gilman, Sr. and Richard E. Lyon, “High-Throughput Techniques for the Evaluation of Fire Retardancy,” J. Mater. Chem., 16, 2023-2030 (2006).

Novel Surfactants

Dongyan Wang and Charles A. Wilkie, “A Stibonium-Modified Clay and its Polystyrene Nanocomposite,” Polym. Degrad. Stab., 82, 309-315 (2003).

Shengpei Su , David D. Jiang and Charles A. Wilkie, “Novel Polymerically-Modified Clays Permit the Preparation of Intercalated and Exfolaited Nanocomposites of Styrene and its Copolymers by Melt Blending,” Polym. Degrad. Stab., 83, 333-346 (2004).

Shengpei Su, David D. Jiang and Charles A. Wilkie, “Poly(Methyl Methacrylate), Polypropylene and Polyethylene Nanocomposite Formation by Melt Blending using Novel Polymerically-Modified Clays,”  Polym. Degrad. Stab., 83, 321-331 (2004).

Xiaoxia Zheng and Charles A. Wilkie, “Flame  Retardancy of Polystyrene Nanocomposites Based on an Oligomeric Organically-Modified Clay Containing Phosphate,” Polym. Degrad. Stab., 81, 551-557 (2003).

Xiaoxia Zheng and Charles A. Wilkie, “Nanocomposites Based on Poly (ε-Caprolactone) (PCL)/Clay Hybrid: Polystyrene, High Impact Polystyrene, ABS, Polypropylene and Polyethylene,” Polym. Degrad. Stab., 82, 441-450 (2003).

Jinguo Zhang and Charles A. Wilkie, “A Carbocation Substituted Clay and its Styrene nanocomposite,” Polym. Degrad. Stab., 83, 301-307 (2004).

Shengpei Su and Charles A. Wilkie, “The Thermal Degradation of Nanocomposites That Contain an Oligomeric Ammonium Cation on the Clay,” Polym. Degrad. Stab., 83, 347-362 (2004).

Shengpei Su, David D. Jiang, and Charles A. Wilkie, “Study of the thermal stability of Polystyryl surfactants and its modified clay nanocomposites,” Polym. Degrad. Stab., 84, 269-277 (2004).

Shengpei Su, David D. Jiang, and Charles A. Wilkie, “Polybutadiene modified clay and its nanocomposites,” Polym. Degrad. Stab., 84, 279-288 (2004).

Shengpei Su, David D. Jiang, and Charles A. Wilkie, “Polybutadiene modified clay and its polystyrene nanocomposites,” J Vinyl Add Tech, 10, 44-51 (2004).

Shengpei Su, David D. Jiang, Charles A. Wilkie, “Methacrylate Modified Clays and Their Polystrene and Poly(Methyl Methacrylate) Nanocomposites,” Polymers for Advanced Technology, 15, 225-231 (2004).

Grace Chigwada, David D. Jiang, Charles A. Wilkie, “Polystyrene Nanocomposites based on Carbazole-Containing Surfactants,” Thermochim. Acta, 436, 113-121 (2005).

Jinguo Zhang, David D. Jiang, Charles A. Wilkie, “Polyethylene and Polypropylene Nanocomposites Based on a Three Component Oligomerically-Modified Clay ,”  Polym. Degrad Stab., 91, 641-648 (2006).

Jinguo Zhang, David D. Jiang, Charles A. Wilkie, “Fire Properties of Styrenic Polymer-Clay Nanocomposites Based on an Oligomerically-Modified Clay,” Polym. Degrad. Stab., 91, 358-366 (2006).

Xiaoxia Zheng, David D. Jiang, and Charles A. Wilkie ,”Methyl Methacrylate Oligomerically-Modified Clay and its Poly (Methyl Methacrylate) Nanocomposites,” Thermochim. Acta, 435, 202-208 (2005).

Jinguo Zhang, David D, Jiang, and Charles A. Wilkie “Polyethylene and Polypropylene Nanocomposites based upon an Oligomerically-Modified Clay,”  Thermochim. Acta, 430, 107-113 (2005).

Maryam Sepehr, Leszek A. Utracki, Xiaoxia Zheng and Charles A. Wilkie, “Polystyrenes with macro-intercalated organoclay. Part I: Compounding and Characterization,” Polymer, 46, 11557-11568 (2005).

Maryam Sepehr, Leszek A. Utracki, Xiaoxia Zheng and Charles A. Wilkie, “Polystyrenes with macro-intercalated organoclay. Part II: Rheology and Mechanical Performance,” Polymer, 46, 11569-11581 (2005).

Xiaoxia Zheng, David D. Jiang and Charles A. Wilkie, “Polystyrene Nanocomposites Based on an Oligomerically -Modified Clay Containing Maleic Anhydride,”  Polym. Degrad. Stab., 91, 108-113 (2006).

 

Jinguo Zhang, David D. Jiang and Charles A. Wilkie,  “Thermal and Flame Properties of Polyethylene and Polypropylene Nanocomposites Based on an Oligomerically–Modified Clay,” Polym. Degrad. Stab., 91, 298-304 (2006).

Xiaoxia Zheng, David D. Jiang, Dongyan Wang and Charles A. Wilkie, “Flammability of Styrenic Polymer Clay Nanocomposites Based on a Methyl Methacrylate Oligomerically Modified Clay,” Polym. Degrad. Stab., 91, 289-297 (2006). 

Grace Chigwada, Dongyan Wang, David D. Jiang, and Charles A. Wilkie, “Styrenic Nanocomposites Prepared using a Novel Biphenyl-Containing Clay,” Polym. Degrad. Stab., 91, 755-762 (2006).

Grace Chigwada, Dongyan Wang, and Charles A. Wilkie, “Polystyrene Nanocomposites Based on Quinolinium and Pyridinium Surfactants,” Polym. Degrad. Stab., 91, 641-648 (2006).

Jinguo Zhang, David D. Jiang and Charles A. Wilkie, “Mechanical and Fire Properties of Styrenic Polymer Nanocomposites Based on an Oligomerically – Modified Clay,” Polym. Adv. Tech, 16, 800-805 (2005).

Jinguo Zhang, David D. Jiang, Dongyan Wang, and Charles A. Wilkie, “Styrenic Polymer Nanocomposites Based on an Oligomerically-Modified Clay with High Inorganic Content,” Polym. Degrad. Stab., 91, 2665-2674 (2006).

Jinguo Zhang and Charles A. Wilkie, “Polyethylene and Polypropylene Nanocomposites Based on Polymerically - Modified Clay Containing Alkylstyrene Units,” Polymer, 47, 5736-5743 (2006).

Mechanism of Action in Nanocomposites

 

Bok Nam Jang and Charles A. Wilkie, “The Thermal Degradation of Polystyrene Nanocomposites,” Polymer, 46, 2933-2942 (2005).

Bok Nam Jang and Charles A. Wilkie, “The Effect of Clay on the Thermal Degradation of Polyamide 6 in Polyamide 6/Clay Nanocomposites,” Polymer, 46, 3264-3274 (2005).

Bok Nam Jang, Dongyan Wang, and Charles A. Wilkie, “The Relationship Between the Solubility Parameter of Polymers and the Clay-Dispersion in Polymer/Clay Nanocomposites and the Role of the Surfactant,” Macromol., 38, 6533-6543 (2005).

Marius C. Costache, David  D. Jiang, and Charles A. Wilkie, “Thermal Degradation of Ethlene-Vinyl Acetate Copolymer Nanocomposites,” Polymer,  46, 6947-6958 (2005).

Bok Nam Jang, David D. Jiang, and Charles A. Wilkie, “The Effects of Clay on the Thermal Degradation Behavior of Poly(Styrene-co-Acrylonitirile),”Polymer, 46, 9702-9713 (2005).

Bok Nam Jang, Marius Costache, and Charles A. Wilkie, “The Relationship Between Thermal Degradation Behavior of Polymer and the Fire Retardancy of Polymer/Clay Nanocomposites,” Polymer, 46, 10678-10687 (2005).

Marius C. Costache, Dongyan Wang, Matthew J. Heidecker, E. Manis, and Charles A. Wilkie, “The Thermal Degradation of Poly(Methyl Methacrylate) Nanocomposites with Montmorillonite, Layered Double Hydroxides and Carbon Nanotubes,” Polymers Adv. Tech., 17, 272-280 (2006).

Menachem Lewin, E.M. Pearce, Kalle Levon, Alexander Korniakov, Abraham Mey-Marom, Mauro Zammarano, Charles A. Wilkie, Bok Nam Jang, “Nanocomposites at Elevated Temperatures: Migration and Structural Changes,” Polym. Adv. Tech., 17, 226-234 (2006).

XPS Studies

 

J. Hao, C. A. Wilkie, and J. Wang, “An XPS Investigation of Thermal degradation and Charring of Cross-linked Polyisoprene and Polychloroprene,” Polym. Degrad. Stab. 71, 305-315 (2001).

Jianqi Wang, Jianxin Du, Hongyang Yao, and Charles A. Wilkie, "XPS Characterization of Friedel-Crafts Cross-Linked Polystyrene," Polym. Degrad. Stab., 74, 321-326 (2001).

Jianqi Wang, J. Hao, Jin Zhu, and Charles A. Wilkie, "An XPS study of the thermal degradation of polystyrene-clay nanocomposites," Polym. Degrad. Stab., 77, 249-252 (2002).

Jianxin Du, Jin Zhu, Charles A. Wilkie, and Jianqi Wang, "An XPS Investigation of Thermal Degradation and Charring of PMMA Clay Nanocomposites," Polym. Degrad. Stab., 77, 377-381 (2002).

Jianxin Du, Dongyan Wang, Charles A. Wilkie and Jianqi Wang, “An XPS Investigation of Thermal Degradation and Charring on PVC Clay Nanocomposites,” Polym. Degrad. Stab., 79, 319-324 (2003).

Jianxin Du, Jianqi Wang , Shengpei Su, and Charles A. Wilkie, “Additional XPS Studies on the Degradation of Poly(Methyl Methacryalte) and Polystyrene Nanocomposites,” Polym. Degrad. Stab., 83, 29-34 (2004).

Jianwei Hao, Menachem Lewin, Charles A. Wilkie and Jianqi Wang, “Additional Evidence for the Migration of Clay upon Heating of Clay-PP Nanocomposites from X-Ray Photoelectron Spectroscopy (XPS).” Polym. Degrad. Stab., 91, 2482-2485 (2006).

Cross-Linking Studies

 

David D. Jiang, Galina F. Levchik, Sergei V. Levchik, Caroline Dick, John J. Liggat, C. E. Snape, and Charles A. Wilkie, ”Thermal degradation of Cross-Linked Polyisoprene and Polychloroprene,” Polym. Degrad. Stab., 68, 75-82 (2000).

Qiang Yao and Charles A. Wilkie, "How does Cross-Linking Effect the Thermal Stability of Polyisoprene," Polym. Degrad. Stab., 69, 287-296 (2000).

Fawn M. Uhl, Michael A. McKinney, and Charles Wilkie, " Polybutadiene Cross-Linked With Various Diols – Effect On Thermal Stability," Polym. Degrad. Stab., 70, 417-424 (2000).

F.M. Uhl, G.F. Levchik, S.V. Levchik, C.  Dick, J. J. Liggat, C. E. Snape, and C.A. Wilkie, “The Thermal Stability Of Cross-Linked Polymers: Methyl Methacrylate With Divinylbenzene and Styrene With Dimethacrylates,” Polym. Degrad. Stab., 71, 317-325 (2000).

Friedel-Crafts Chemistry

Hongyang Yao, Jin Zhu, Michael A. McKinney, Charles A. Wilkie, “Cross-linking of Polystyrene by Friedel-Crafts Chemistry: Multi-functional Additives,” J. Vinyl Add. Tech., 6, 205-211 (2000).

H. Yao, M. A. McKinney, C. Dick, J.J. Liggat, C.E. Snape, and C. A. Wilkie, "Cross-linking of Polystyrene by Friedel-Crafts Chemistry: Reaction of p-Hydroxymethylbenzyl Chloride with Polystyrene," Polym. Degrad. Stab., 72, 399-405 (2001).

Jianqi Wang, Jianxin Du, Hongyang Yao, and Charles A. Wilkie, "XPS Characterization of Friedel-Crafts Cross-Linked Polystyrene," Polym. Degrad. Stab., 74, 321-326 (2001).

Fire Retardancy of Polyureas

Marius C. Costache, Eric M. Kanugh, Usman Sorathia and Charles A. Wilkie, “Fire Retardancy of Polyureas,” J. Fire Sci , 24, 433-444 (2006).

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