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John Lawton, a Senior Scientist at POET investigates the co-products derived from bioethanol production in order to find new value added uses for them. Over the past 20 years, John has been proactive in the study of physical and chemical properties of cereals and their components. He is a nationally and internationally recognized authority on the physical properties and polymer properties of cereal proteins and starches. Twenty five peer reviewed journal publications, four patents, four book chapters, and 20 presentations have resulted from his research on cereals and their components. He is committed to the development and characterization of proteins and starch based materials and he applies the fundamentals of polymer science to cereal proteins and starches. Prior to joining the POET team, John was the Lead Scientist of the National Program (NP) 306 CRIS project entitled "Nonfood Utilization of Cereal and Soy Based Co-Products" at the National Center for Agricultural Utilization Research, Peoria, IL. John Lawton is a member of AACC International and is the current co-chair of the Journal Committee. John is also a member of the BioEnvironmental Polymer Society.

Publications

Peer-Reviewed Journal Publications

1. Lawton, J. W., Davis, A. B., and Behnke, K. C. High-Temperature, Short-Time Extrusion of wheat gluten and a bran-like faction. Cereal Chem. 62:267-271. 1984.

2. Lawton, J. W. and Faubion, J. M. Measuring kernel hardness using the tangential abrasive dehulling device. Cereal Chem. 66:519-524. 1989.

3. Lawton, J. W. Viscoelasticity of zein-starch doughs. Cereal Chem. 69:351-355. 1992.

4. Lawton, J. W. and Wu, Y. V. Thermal behavior of annealed acetic acid soluble wheat gluten. Cereal Chem.. 70:471-475. 1993.

5. Lawton, J. W. and Fanta, G. F. Glycerol-plasticized films prepared from starch-poly(vinyl alcohol) mixtures: effect of poly(ethylene-co-acrylic acid). Carbohyd. Polym. 23:275-280. 1994.

6. Lawton, J. W. Surface energy of extruded and jet cooked starch. Die Stärke. 47:62-67. 1995.

7. Lawton, J. W. Effect of starch type on the properties of starch containing films. Carbohyd. Polym. 29:203-208. 1996.

8. Wolf. W. J. and Lawton, J. W. Isolation and characterization of zein from corn distillers grains and related fractions. Cereal Chem.. 75:530-536. 1997.

9. Shogren, R. L., Lawton, J. W., Doane, W. M.., and Tiefenbacher, K. F. Structure and morphology of baked starch foams. Polymer 39:6649-6655. 1997.

10. Shogren, R. L., Lawton, J. W., Tiefenbacher, K. F., and Chen, L. Starch-poly(vinyl alcoho) foamed articles prepared by a baking process. J. Appl. Polym. Sci. 68:2129-2140. 1998.

11. Batterman-Azcona, S. J., Lawton, J. W., and Hamaker, B. R. Effects of specific mechanical energy on protein bodies and a-zein in corn flour extrudates. Cereal Chem.76:316-320. 1999.

12. Lawton, J. W., Shogren, R. L., and Tiefenbacher, K. F. Effects of batter solids and starch type on the structure of baked starch foams. Cereal Chem. 76:682-687. 1999.

13. Batterman-Azcona, S. J., Lawton, J. W., and Hamaker, B. R. Microstructural changes in zein proteins during extrusion. Scanning 21:212-216. 1999.

14. Walia, P. S., Lawton, J. W., Shogren, R. L., and Felker, F. C. Effects of moisture level on the morphology and melt flow behavior of thermoplastic starch/poly(hydroxy ester ether) blends. Polymer 41:8083-8093. 2000.

15. Walia, P. S., Lawton, J. W., and Shogren, R. L. Mechanical properties of thermoplastic starch/poly (hydroxy ester ether) blends: effect of moisture during and after processing. J. Appl. Polym. Sci. 84:121-131. 2001.

16. Lawton, J. W. Zein: A history of processing and use. Cereal Chem. 79:1-18. 2002

17. Shogren, R. L., Lawton, J. W., and Tiefenbacher, K. F. Baked starch foams: starch modifications and additives improve process parameters, structure and properties. Ind. Crops Prod. 16:69-79. 2002.

18. Shogren, R. L., Doane, W. M., Garlotta, D., Lawton, J. W., and Willett. Biodegradation of starch/polylactic acid/poly(hydroxy ester ether) composite bars in soil. Polym. Degrad Stab. 79:405-411. 2003.

19. Garlotta, D., Doane, W. M., Shogren, R. L., Lawton, J. W., and Willett, J. L. Mechanical and thermal properties of starch-filled poly(D,L -lactic acid)/poly(hydroxy ester ether) biodegradable blends. J. Appl. Polym. Sci. 88:1775-1786. 2003.

20. Sessa, D. J., Eller, F. J., Palmquist, D. E., and Lawton. J. W. Improved methods for decolorizing corn zein. Ind. Crops Prod. 18:55-65. 2003.

21. Cinelli, P., Chiellini, E., Lawton, J. W., Gordon, S. H., Imam,S .H. Injection Molded hybrid composites based on corn fibers and poly(vinyl alcohol). Macromolecular Symp. 197:115-124. 2003.

22. Lawton, J. W., Shogren, R. L., and Tiefenbacher, K. F. Aspen fiber addition improves the mechanical properties of baked cornstarch foam. Ind. Crops Prod. 19: 41-48. 2004.

23. Lawton, J. W. Plasticizers for zein: their effect on tensile properties and water absorption of zein films. Cereal Chem. 81:1-5. 2004.

24. Kim, S., Sessa, D. J., and Lawton, J. W. Characterization of zein modified with mild cross-linking agent. Ind. Crops Prod. 20: 291-300. 2004.

25 Biswas, A, Sessa, D. J., Lawton, J. W., Gordon, S. H., and Willett, J. L. Microwave assisted rapid modification of zein by octenyl succinie anhydride. Cereal Chem. 82: 1-3. 2005.

26 Selling, G. W., Lawton, J.W., Bean, S., Dunlap, C., Sessa, D.J., Willett, J.L., and Byars, J., Rheological studies utilizing various lots of zein in N,N-Dimethylformamide solutions. J. Agric Food Chem. 53: 9050-9055. 2005.

27 Momany, F.A., Sessa, D.J., Lawton, J.W., Selling, G.W., Hamaker, S.A.H., and Willett, J.L. Structural Chaaracterization of a-zein. J. Agric Food Chem. 54: 543-547. 2005.

28 Biswas, A., Saha, B.C., Lawton, J.W., Shogren, R.L., and Willett, J.L. Process for obtaining cellulose acetate from agricultural by-products. Carbohyd. Polym. 64: 134-137. 2006.

29 Lawton, J.W., Doane, W.M., and Willett, J.L. Aging and moisture effects on tensile properties of starch/poly(hydroxyester ether) Composites. J. Appl. Polym. Sci. 100: 3332- 3339. 2006.

30 Cinelli, P., Chiellini, E., Lawton, J.W., and Imam, S.H. Foamed articles based on potato starch. Corn fibers and poly(vinyl alcohol). Polym. Degrad Stab. 91: 1147-1155. 2006.

31 Lawton, J.W. Isolation of zein using 100% ethanol. Cereal Chem. 83: 565-568. 2006.

32 Lawton, J.W., Selling, G.W., and Willett, J.L. Corn gluten meal as a thermoplastic resin: Effect of plasticizers and water content. Cereal. Chem. 85:102-108. 2008.

Other Publications

25. Lawton, J. W. Influence of a processing variable, temperature, and two ingredient variables, on extrusion texturization of wheat gluten. Kansas State University. 65 pp. 1984. (M.S. Thesis).

26. Lawton, J. W. Studies of sorghum endosperm hardness using reconstituted tablets and the tangential abrasive dehulling device. Kansas State University. 143 pp. 1989 (Ph.D. dissertation).

27. Shogren, R. L and Lawton, J. W. Biodegradable starch-polyester composites. Proc. of the Corn Utilization Conf. VI. 4 pp. 1996. (Proceedings).

28. Bothast, R. J., Dien, B. S., Item, L. B., Hespell, R. B., and Lawton, J. W. Conversion of corn fiber to ethanol. Proc. of the Third Liquid Fuel Conf. p. 241-252. 1996 (Proceedings).

29. Lawton, J. W. Biodegradable coatings for thermoplastic starch. Cereal: Novel Uses and Processes. pp. 43-47. 1997 eds. G. M. Campbell, C. Webb, and S. L. McKee Phenum Press, New York. (Book Chapter).

30. Shogren, R. L., Lawton, J. W., and Tiefenbacher, K. F. Process for manufacturing degradable thin-walled mouldings. PCT Patent. WO09700015A1. January 3, 1997

31. Shogren, R. L. and Lawton, J. W. Enhanced water resistance of starch-based materials. PCT Patent WO09727047A1. July 31, 1997.

32. Xu, W., Doane, W. M., and Lawton, J. W. Biodegradable polyester and natural polymer compositions and films therefrom. PCT Patent WO09744393A1. November 27, 1997.

33. Doane, W. M., Lawton, J. W., and Shogren, R. L. Biodegradable polyester and natural polymer laminates. PCT Patent WO09800459A1. January 8, 1998.

34. Shogren, R. L., Lawton, J. W., and Tiefenbacher, K. F. Process for manufacturing degradable thin-walled mouldings. EP00833564A1. April 8, 1998.

35. Doane, W. M., Lawton, J. W., and Shogren, R. L. Biodegradable bolyester and natural polymer laminates. EP00851891A1. July 8, 1998.

36. Shogren, R. L. and Lawton, J. W. Enhanced water resistance of starch-based materials. U. S. Patent 5,756,194. May 26, 1998.

37. Xu, W., Doane, W. M., and Lawton, J. W. Biodegradable polyester and natural polymer compositions and films therefrom. U. S. Patent 5,821,286. October 13, 1998.

38. Doane, W. M., Lawton, J. W., and Shogren, R. L. Biodegradable polyester and natural polymer laminates. U. S. Patent 5,861,216. January 19, 1999.

39. Xu, W., Doane, W. M., and Lawton, J. W. Biodegradable polyester and natural polymer compositions and films therefrom. EP00901506A1. March 19, 1999.

40. Doane, W. M., Lawton, J. W., and Shogren, R. L. Biodegradable polyester and natural polymer laminates. U. S. Patent 6,040,063. March 21, 2000.

41. Lawton, J. W. Nonfood uses of cereals, pp. 725-740. In Handbook of Cereal Science and Technology, ed. K. Kulp and J. G. Ponte, Jr. Marcel Dekker, Inc, New York. 2000. (Book Chapter)

42. Walia, P. S., Lawton, J. W., Shogren, R. L. and Felker, F. C. Morphology/property relationships in thermoplastic starch/poly(hydroxy ester ether) biodegradable blends. SPEBANTEC 2000. pp. 3655- 3659. 2000. (Proceedings).

43. Shogren, R. L., Lawton, J. W., Doane, W. M., and Willett, J. L. Biodegradable laminates and composites containing starch and poly(hydroxy ester ethers). SPEBANTEC 2000. pp 3792-3795. 2000 (Proceedings).

44. Shogren, R. L., Lawton, J. W., and Tiefenbacher, K. F. Method for producing disposable thin-walled molded articles. U. S. Patent 6,146,573. 2000

45. Lawton, J. W. and Willett, J. L. The mechanical properties of modified starch filled poly(hydroxy ester ether) composites. Polymer Preprints 42:44-45 2001

46. Momany, F. A., Sessa, D. J., Lawton, J. W., and Willett, J. L. A new look at an old protein: a-zein. Proceedings of the United States-Japan Cooperative Program In Natural Resources. 31st annual meeting 2002.

47. Lawton, J. W. New uses of corn proteins. The Third International Starch Technology Conference. pp. 39-52. 2003. (Proceedings).

48. Lawton, J. W., and Wilson, C. M. Proteins of the kernel. pp. 313-354, in Corn: Chemistry and Technology, 2nd ed. Edited by P. J. White and L. A. Johnson. AACC, St. Paul, MN. 2003. (Book Chapter)

49. Lawton, J. W. Starch/uses of native starch. pp. 195-202, in Encyclopedia of Grain Science Vol. 3, Edited by C. Wrigley, H. Corke, and C. Walker. Elsevier Ltd. 2004. (Book Chapter)

50. Biswas, A., Sessa, D. J., Gordon, S. H., Lawton, J. W., and Willett, J. L. Synthesis of zein derivatives and their mechanical properties. in Polymer Biocatalysis and Biomaterials. Edited by H.N. Cheng and R. A. Gross ACS Symposium Series, Vol. 900. 2005. (Book Chapter).



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