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| Craig M. Clemons |
| Craig M. Clemons Adjunct Assistant Professor |
| Room 104, Building 19 One Gifford Pinchot Drive Madison, WI 53726 |
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Tel: 608/231-9396 Fax: 608/231-9582 E-mail: cclemons@fs.fed.us |
1. "Saltcedar and Utah Juniper as Fillers in Wood-Plastic Composites" Clemons, C.M. and Stark, N.M., USDA Forest Service, Forest Products Laboratory, Research Paper, FPL-RP-641 (www.fpl.fs.fed.us/documnts/fplrp/fpl_rp641.pdf)
2. "The Effects of Material Parameters on the Diffusion and Sorption Properties of Wood-Flour Polypropylene Composites", Vera Steckel, Craig M. Clemons, and Heiko Thoemen, Journal of Applied Polymer Science, Wiley Periodicals, Inc. Vol. 103, 2006, 752-763
3. "Influence of Clay on Crystallization and Properties of HDPE/Wood Composites", Lei, Y. and Q. Wu, and C.M. Clemons, Journal of Applied Polymer Science, in press
4. "The effect of acetylated wood flour or coupling agent on the moisture, UV, and biological resistance of extruded wood-fiber plastic composites", Ibach, R.E., and C.M. Clemons, in the proceedings for the Wood Protection 2006 Conference, New Orleans, LA, March 21-23, 2006
5. "Evaluation and Process Development of Salt Cedar and Juniper Bio-Composites as Tools to Utilize Exotic and Invasive Species and Restore Native Eco-Systems", Winandy, J.E; C.M. Clemons, N.M. Stark, J.H. Muehl, R.S. Williams, In: Proceedings of Third International Workshop on Green Composites, IWGC-3; 2005 March 16-17; Kyoto, Japan. Kyoto, Japan, 56-60 (http://www.fpl.fs.fed.us/documnts/pdf2005/fpl_2005_winandy001.pdf)
6. "Wood Flour", Craig Clemons and Dan Caulfield, Chapter 15 of Functional Fillers for Thermoplastics, M. Xanthos, ed., Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, 2005, 249-270 (http://www.fpl.fs.fed.us/documnts/pdf2005/fpl_2005_clemons001.pdf)
7. "Natural Fibers", Craig Clemons and Dan Caulfield, Chapter 11 of Functional Fillers for Thermoplastics, M. Xanthos, ed., Wiley-VCH Verlag GmbH & Co. KGaA, 2005, 195-206 (http://www.fpl.fs.fed.us/documnts/pdf2005/fpl_2005_clemons002.pdf)
8. "Wood Thermoplastics Composites", Daniel F. Caulfield, Craig Clemons, Rodney E. Jacobson, Chapter 13 of Handbook of Wood Chemistry and Wood Composites, Roger Rowell, ed., CRC Press, Boca Raton, FL, 2005, 365-378 (http://www.fpl.fs.fed.us/documnts/pdf2005/fpl_2005_caulfield001.pdf)
9. Winandy, J.E.; N.M. Stark, C.M. Clemons, "Considerations in Recycling of Wood-Plastic Composites" In: Proceedings of the 5th Global Wood and Natural Fibre Composites Symposium; April 27-28, 2004; Kassel , Germany . Kassel , Germany : A6-1-A6-9. (http://www.fpl.fs.fed.us/documnts/pdf2004/fpl_2004_winandy001.pdf)
10. "Effect of Processing Method on the Surface and Weathering Characteristics of Wood-Flour/HDPE Composites" N.M. Stark, L.M. Matuana, and C.M. Clemons, Journal of Applied Polymer Science, 93(3), pp 1021-1030, 2004 (http://www.fpl.fs.fed.us/documnts/pdf2004/fpl_2004_stark001.pdf)
11. "The Effects of Processing Method and Moisture History on the Laboratory Fungal Resistance of Wood-HDPE Composites", Craig M. Clemons and R.E. Ibach, Forest Products Journal, 54(4), pp 50-57, 2004 (http://www.fpl.fs.fed.us/documnts/pdf2004/fpl_2004_clemons001.pdf )
12. "Impact Toughness of Cellulose-Fiber Reinforced Polypropylene: Influence of Microstructure in Laminates and Injection Molded Composites", Craig Clemons, Research General Engineer, Dan Caulfield, Research Chemist, A. Jeffrey Giacomin, in the Proceedings of 7th International Conference on Woodfiber-Plastic Composites, Madison, WI, May 19-20, 2003, Forest Products Society, Madison, WI, 119-125. (http://www.fpl.fs.fed.us/documnts/pdf2003/clemo03a.pdf)
13. "Combined UV and water exposure as a preconditioning method in laboratory fungal durability testing", R.E. Ibach, C.M. Clemons, and N.M. Stark, in the Proceedings of 7th International Conference on Woodfiber-Plastic Composites, Madison, WI, May 19-20, 2003, Forest Products Society, Madison, WI, 61-67. (http://www.fpl.fs.fed.us/documnts/pdf2003/ibach03a.pdf)
14. "Effects of Processing Method on Accelerated Weathering of Wood Flour-HDPE Composites" N.M. Stark, L.M. Matuana, and C.M. Clemons, in the Proceedings of 7th International Conference on Woodfiber-Plastic Composites, Madison, WI, May 19-20, 2003, Forest Products Society, Madison, WI, 79-87. (http://www.fpl.fs.fed.us/documnts/pdf2003/stark03c.pdf)
15. "Application of Laboratory Fungal Resistance Tests to Solid Wood and Wood-Plastic Composites", C.M. Clemons and R.E. Ibach, Plastics in Building Construction, 27(2), Feb., 2003, 8 pages (http://www.fpl.fs.fed.us/documnts/pdf2003/clemo03b.pdf)
16. "Durability of Wood and Polyethylene Composite Lumber", Stark, N., C. Clemons, R. Ibach, and L. Matuana, Final Report for: Partnership for Advanced Technologies on Housing, U.S. Department of Housing and Urban Development, Office of Policy Development and Research, Interagency agreement # I-OPC-21763, 2003, 38 pages (http://www.fpl.fs.fed.us/ahrc/index.html)
17. "Biological Resistance of Polyethylene Composites made with Chemically modified Fiber", Rebecca E. Ibach and Craig M. Clemons, in the Proceedings from the 6th Pacific-Rim Biobased Composites Symposium, November 10-13, 2002, Portland, OR, compiled by Phil Humphreys, Vol. 2, 574-583 (http://www.fpl.fs.fed.us/documnts/pdf2002/ibach02b.pdf)
18. "Wood-Plastic Composites in the United States: The Interfacing of Two Industries", Craig M. Clemons, Forest Products Journal, 52(6), June, pp 10-18, 2002 (http://www.fpl.fs.fed.us/documnts/pdf2002/clemo02b.pdf)
19. "Laboratory Tests on the Fungal Resistance of Wood Filled Polyethylene Composites", Craig M. Clemons and Rebecca E. Ibach, Status: Published in ANTEC ’02 conference proceedings, Society of Plastics Engineers, San Francisco, May 2002, pp 2219-2222 (http://www.fpl.fs.fed.us/documnts/pdf2002/clemo02a.pdf)
20. "Woodfiber-Plastic Composites in the United States – History and Current and Future Markets", Craig M. Clemons, Proceedings of the 3rd International Wood and Natural Fibre Composites Symposium, Kassel, Germany, September 19-20, 2000, 7 pages (http://www.fpl.fs.fed.us/documnts/pdf2000/clemo00b.pdf)
21. "Dynamic Fracture Toughness of Cellulose Fiber Reinforced Polypropylene: Preliminary Investigation of Microstructural Effects" Craig M. Clemons, A. Jeffrey Giacomin, and Daniel F. Caulfield, Journal of Elastomers and Plastics, 31, 1999, 367-378 (http://www.fpl.fs.fed.us/documnts/pdf1999/clemo99a.pdf)
22. "Thermal and Mechanical Analysis of Lignocellulosic-Polypropylene Composites", A.R. Sanadi, D.F. Caulfield, N.M. Stark, C.M. Clemons, Proceedings of the 5th International Conference on Woodfiber Plastic Composites, Madison, WI, May 26-27, 1999, Forest Products Society, Madison, WI, 67-78 (http://www.fpl.fs.fed.us/documnts/pdf1999/sanad99a.pdf)
23. "Spherulitic Structure in Cellulose-Fiber reinforced Polypropylene", C.M. Clemons, A.J. Giacomin, and D.F. Caulfield, proceedings of the Fifth International Conference on Woodfiber-Plastic Composites, Forest Products Society, Madison, WI, May 26-27, 1999, 300 (http://www.fpl.fs.fed.us/documnts/pdf1999/clemo99b.pdf)
24. "Mechanical Properties and Morphology of Impact Modified Polypropylene-Wood Flour Composites," K. Oksman, C. Clemons, Journal of Applied Polymer Science 67, 1503-1513, 1998 (http://www.fpl.fs.fed.us/documnts/pdf1998/oksma98a.pdf)
25. "Microstructural Effects on the Dynamic Fracture Toughness of Cellulose Fiber Reinforced Polypropylene", Craig M. Clemons, A. Jeffrey Giacomin, and D.F. Caulfield, Proceedings: ANTEC '98, Atlanta, GA, May 5-9, 1998, 1432-1436 (http://www.fpl.fs.fed.us/documnts/pdf1998/clemo98a.pdf)
26. "Dynamic Fracture Toughness of Polypropylene Reinforced with Cellulose Fiber", C.M. Clemons, A.J. Giacomin, and J.A. Koutsky, Polymer Engineering and Science, 37(6), 1997, 1012-1018
27. "Effects of elastomers and coupling agent on impact performance of wood flour-filled polypropylene", K. Oksman, C. Clemons, Proceedings of the 4th International Conference on Woodfiber Plastic Composites, Madison, WI, May 12-14, 1997, Forest Products Society, Madison, WI, 144-155 (http://www.fpl.fs.fed.us/documnts/pdf1997/oksma97a.pdf)
28. Weight reduction: wood versus mineral fillers in polypropylene, English, Brent; Stark, Nicole; Clemons, Craig, Proceedings of the 4th International Conference on Woodfiber-Plastic Composites, Forest Products Society, Madison, WI, May 12-14, 1997, 237-244. (http://www.fpl.fs.fed.us/documnts/pdf1997/engli97e.pdf)
29. "Heat Release Rate of Wood-Plastic Composites", Nicole M. Stark, Robert H. White, and Craig M. Clemons, SAMPE Journal, 33(5), 1997, 26-31 (http://www.fpl.fs.fed.us/documnts/pdf1997/stark97a.pdf)
30. "Dynamic Fracture Toughness of Polypropylene Reinforced with Cellulose Fiber", C.M. Clemons and A.J. Giacomin, Proceedings: ANTEC '96, Indianapolis, IN, May 5-9, 1996, 3307-3311 (http://www.fpl.fs.fed.us/documnts/pdf1996/clemo96a.pdf)
31. "Waste-Wood-Derived Fillers for Plastics", B. English, C.M. Clemons, N.M. Stark, and J.P. Schneider, USDA Forest Service, Forest Products Laboratory, General Technical Report, FPL-GTR-91, 1996 (http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr91.pdf)
32. "Development and Commercial Evaluation of Compounded Waste Wood-Paper Reinforced Plastic Composite Feedstock", Brent English, Craig M. Clemons, Nicole Stark, and J.Schneider, Final Report for Waste Reduction and Recycling Demonstration Grant Program, Project # 94-55, Wisconsin Department of Natural Resources. USDA Forest Service, Forest Products Laboratory, 1996
33. "Biofibers as Reinforcing Fillers in Thermoplastic Composites", J.P. Schneider, G.E. Myers, C.M. Clemons, and B.E. English, Journal of Vinyl & Additive Technology, 1(2), 1995, 103-108
34. "Exploratory Microscopic Investigation of Impacted Paper Fiber-Reinforced Polypropylene Composites", Craig Clemons, Proceedings: Woodfiber-Plastic Composites: Virgin and Recycled Wood Fiber and Polymers for Composites, Madison, WI, May 1-3, 1995, 173-179 (http://www.fpl.fs.fed.us/documnts/pdf1995/clemo95a.pdf)
35. "Water Absorption and Load Transferring Mechanisms in Polypropylene Reinforced with Lignocellulosic Fiber", A.C. Karmaker and C.M. Clemons, Proceedings: ANTEC '95, Boston, May 7-11, 1995
36. "Recycled Newspaper Fibers as Reinforcing Fillers in Thermoplastics: Part I - Analysis of Tensile and Impact Properties in Polypropylene", A.R. Sanadi, R.A. Young, C.M. Clemons, R. Rowell, Journal of Reinforced Plastics and Composites, 13(1) 1994, 54-67
37. "Composites from recycled wood and plastics," John A. Youngquist, George E. Myers, James H. Muehl, Andrzej M. Krzysik, Craig M. Clemons, Lisa Brown. 1994. Project summary prepared for U.S. Environmental Protection Agency, USDA Forest Service, Forest Products Laboratory, 20 pages (http://www.fpl.fs.fed.us/documnts/pdf1994/young94a.pdf)
38. "Waste Newspaper-Polypropylene Composites: Research- and Plant-Scale Studies of Commercial Feasibility", C.M. Clemons, G.E. Myers, J.F. Saeman, and D.S. Ermer, Proceedings: Wastepaper V, March 27-30, Chicago, 1994
39. "Composites from Recycled Wood and Plastics", J.A. Youngquist, G.E. Myers, J.M. Muehl, A.M. Krzysik, and C.M. Clemons, Final Report for U.S. Environmental Protection Agency, Project # IAG DW12934608-2, USDA Forest Service, Forest Products Laboratory, 1993, 97 pages
40. "Density Range of Compression Molded Polypropylene-Wood Composites", Robert L. Geimer, C.M. Clemons, and J. Wood, Wood and Fiber Science, 25(2), 1993, 163-169 (http://www.fpl.fs.fed.us/documnts/pdf1993/geime93a.pdf)
41. "Strength Properties of Composites from Biobased and Synthetic Fibers", R.A. Young, R.M. Rowell, A. Sanadi, and C. Clemons, Cellulosics: Chemical, Biochemical and Material Aspects, J.F.Kennedy, G.O.Phillips, P.A.Williams, eds., Ellis Horwood, New York, Chapter 66, pp 453-458, 1993
42. "Wastepaper Fiber in Plastic Composites Made by Melt Blending: Demonstration of Commercial Feasibility", G.E. Myers, C.M. Clemons, Final Report for Solid Waste Reduction and Recycling Demonstration Grant Program, Project # 91-5, Wisconsin Department of Natural Resources. USDA Forest Service, Forest Products Laboratory, 1993
43. "Properties of Melt-Blended Composites From Post-Consumer Polypropylenes and Wastepapers", C.M. Clemons, G.E. Myers, Proceedings: ANTEC '93, New Orleans, May 9-13, 1993, 3213-3215 (http://www.fpl.fs.fed.us/documnts/pdf1993/clemo93a.pdf)
44. "Moisture Sorption Properties of Composite Boards from Esterified Aspen Fiber", Craig M. Clemons, Raymond A. Young, and Roger Rowell, Wood and Fiber Science, 23(3) 1992, 353-363
45. "Chemical Modification of Wood Fiber for Thermoplasticity, Compatibilization With Plastics, and Dimensional Stability", Roger M. Rowell and Craig M. Clemons, Proceedings: 26th International Particleboard/Composite Materials Symposium, Washington State University, March 1992
46. "Effects of Composition and Polypropylene Melt Flow on Polypropylene-Waste Newspaper Composites", G.E.Myers, C.M. Clemons, J.J. Balatinecz, and R.T. Woodhams, Proceedings: ANTEC '92, Detroit, May 3-7, 1992
47. "Effects of Several Ingredient Variables on Mechanical Properties of Wood Fiber-Polyolefin Composites Blended in a Thermokinetic Mixer", C. Gonzalez, C.M. Clemons, G.E. Myers, and T.M. Harten, Proceedings: Material Research Society, Vol. 266, San Francisco, April 1992
48. "Results of Chemical Modification of Lignocellulosic Fibers for Use in Composites", Roger Rowell, Brenda Cleary, Jeffrey S. Rowell, Craig Clemons, and Raymond A. Young, Woodfiber Plastic Composites: Fundamental Concepts, Processes, and Material Options, selected papers from the proceedings of the Wood Fiber-Plastics Conference, Madison, WI, 1991 and the Forest Products Research Society Conference, New Orleans, 1991, M. Wolcott, ed., Forest Products Society
49. "Strength Properties of Composites from Biobased and Synthetic Fibers", R.A. Young, R.M. Rowell, A. Sanadi, and C. Clemons, Proceedings: Cellucon '91; New Orleans, 1991
Dr. Clemons' research interests are in composites from polymers and bio-based materials. These bio-based materials include wood-derived materials such as wood flour, wood fiber, and pulp/paper fibers as well as natural fibers from sources other than wood. These materials present challenges in processing and performance due to their low thermal stability, low bulk density, affinity for moisture, and the low melt strength of polymer melts that typically have high fiber contents. Dr. Clemons is working on overcoming these limitations through a greater understanding of bio-based materials, additive technology, and process improvement. Dr. Clemons is also developing appropriate characterization techniques to quantify microstructure and morphology and then relating it to composite performance such as dynamic facture toughness.
Despite a rapidly growing market for wood-plastic composites in exterior building products, the related issues of moisture sorption and biological resistance are insufficiently understood. This knowledge deficit will become more critical as these composites are considered for applications where greater structural performance is required. Dr. Clemons is developing improved characterization methods and a greater understanding of moisture sorption and biological resistance and their relationship to durability.
More recently, Dr. Clemons has begun research on composites of polymers and cellulose nanocrystals derived from wood pulps. These high-performance cellulose nanocrystals are biosynthesized in the wood cell wall and offer significant reinforcing potential. Methods for preparing these composites, nanocrystal dispersion and orientation, and polymer-nanocrystal interaction are of particular interest.
Since 2001, he has been the Conference Chair for the International Conference on Woodfiber-Plastic Composites, a biennial conference with over 450 international attendees from the scientific, technical, and commercial communities encouraging the exchange and dissemination of information on the latest advances in wood-plastic composites. Dr. Clemons is also a reviewer for a wide range of journals including the Journal of Applied Polymer Science, Wood and Fiber Science, Holzforschung, Polymer Composites, and Advances in Polymer Technology.
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Copyright 2007 The Board of Regents of the University of Wisconsin System Date last modified: 07-Jun-2007 Content by: cclemons@fs.fed.us Accessibility Web services Thank you for visiting http://www.engr.wisc.edu/me/faculty/clemons_craig.html |
