Author
 |
PARRIS, NICHOLAS |
|
DICKEY, LELAND |
|
Submitted to: Meeting Abstract
Publication Type: Abstract Only Publication Acceptance Date: 4/20/2003 Publication Date: 4/20/2003 Citation: Parris, N., Dickey, L.C. 2003. Adhesive properties of corn zein formulations on glass surfaces. Meeting Abstract.94th American Oil Chemists' Society Annual Meeting and Exposition. Kansas City, MO, May 4-7, 2003. Book of Abstracts p.115. Interpretive Summary: Technical Abstract: To support expansion of the corn ethanol process, profitable markets must be identified for new non-starch co-products derived from corn. Protein is seen as the major byproduct of ethanol production because of its higher value relative to other components of corn. Adhesive properties of commercial zein proteins and an inexpensive zein-lipid mixture, isolated from dry-milled corn, on glass were investigated. A method was developed for uniformly preparing bonded glass panels and for measuring the amount of pull required to separate the panels. Adhesive strength of commercial zein to glass was greater at 29% than at 52% relative humidity (RH). Bonded samples prepared from zein isolates were less sensitive to changes in RH. Bonds using commercial zein formulations containing plasticizer reached a maximum strength at 10% poly(propylene glycol) regardless of RH. Formulations that required the least amount of ethanol (35-42%) were obtained by adjusting its pH to 3 or 10 with a volatile acid or base. These formulations completely bonded to the glass panels at low sample concentrations as estimated by 100% cohesive failure and exhibited lower Young's Modulus values than most of the other bonding materials tested. Samples bonded with a commercially available polyvinyl acetate emulsion adhesive were not as strong as the zein bonded samples and were sensitive to changes in RH. |
