May 11, 2010

Midwest Biopolymers & Biocomposites Workshop


Poster Abstracts

111: Improving the Quality Control of Biomaterials with On-line and At-line Infrared Spectroscopy

John McClelland1, Roger Jones1, Jay-lin Jane2, and Perminus Mungara3

1Applied Molecular Analytics Group, Ames Laboratory-USDOE, Iowa State University, Ames, Iowa
2Center for Crops Utilization Research, Iowa State University, Ames, Iowa
3Grain Processing Corporation, Muscatine, Iowa


The molecular composition of biomaterials determines many of their chemical and physical properties which govern how the materials will perform in various uses. Hence, it is advantageous if molecular composition can be monitored and adjusted if necessary during manufacturing and at the final product stage to certify product quality. Results will be presented on extrusion of soy protein-based polymers processed with different concentrations of a modified rubber additive (polyisoprene-graft-maleic anhydride) and at different extruder screw speeds. Correlations will be shown for on-line (tensile strength) and at-line (additive concentration) measured spectra.