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Reaction of Zein with Methylenediphenyl Diisocyanate in the Melt State: Thermal, Mechanical, and Physical Properties
- Source :
- Industrial & Engineering Chemistry Research. 51:9199-9203
- Publication Year :
- 2012
- Publisher :
- American Chemical Society (ACS), 2012.
-
Abstract
- Corn protein (zein) was melt-processed with methylenediphenyl 4,4′-diisocyanate (MDI) using triethylamine (TEA) as a catalyst to facilitate the reaction of the isocyanate groups with the nucleophilic moieties present on zein. The product of the reaction was examined using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) to monitor changes in molecular weight. Techniques used to evaluate property changes after reaction included FTIR, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and evaluation of mechanical properties. Our findings demonstrated that zein reacts with MDI in the melt state generating higher molecular weight compounds that after compression molding have improved physical properties and solvent resistance.
- Subjects :
- Thermogravimetric analysis
General Chemical Engineering
food and beverages
Compression molding
General Chemistry
Isocyanate
Industrial and Manufacturing Engineering
Solvent
chemistry.chemical_compound
Differential scanning calorimetry
chemistry
Chemical engineering
Polymer chemistry
Sodium dodecyl sulfate
Fourier transform infrared spectroscopy
Triethylamine
Subjects
Details
- ISSN :
- 15205045 and 08885885
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Industrial & Engineering Chemistry Research
- Accession number :
- edsair.doi...........ce84b88ddf9ad618a7dc2acaee9e1b85