Location: Plant Polymer ResearchTitle: Amylose inclusion complexes utilized for improved film properties: Production and rheological characterization
Submitted to: American Chemical Society National Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 6/1/2017
Publication Date: 8/20/2017
Citation: Hay, W.T., Fanta, G.F., Selling, G.W. 2017. Amylose inclusion complexes utilized for improved film properties: Production and rheological characterization [abstract]. American Chemical Society National Meeting & Exhibition, August 20-24,2017, Washington, D.C.
Technical Abstract: We have demonstrated that amylose-hexadecyalammonium chloride inclusion complexes (Hex-Am) can be blended with PVOH to produce high quality films with excellent physical properties. By incorporating between 20 and 70% of the amylose-complexes with PVOH, we were able to produce films with greater elongation than PVOH alone. Unlike PVOH, the composite films exhibited increased water contact angles, expanding possible industrial applications. Utilizing the renewable amylose-inclusion complexes increases sustainability while providing improved properties to the film. The amylose-complexes were produced by the commercially relevant techniques of steam jet cooking coupled with spray drying. Amylose-complexes could be spray dried to a temperature of 133 °C without degradation of the final product. Increasing throughput resulted in larger particle size, with greater moisture content. Additionally, increasing outlet temperature decreased the bulk density and moisture content. The rheological properties of both Hex-Am and their blends with PVOH were investigated. It was found that aqueous solutions of the amylose-complexes were non-Newtonian and would become highly viscous at 4.2% solids, forming a strong mechanical gel at 10% solids. Increasing the ratio of Hex-Am to PVOH produced films with greater storage modulus. Rheological characterization and the investigation into the effects of spray drying aid in defining ideal processing conditions. Our work demonstrates that renewable, biobased amylose-complexes blended with PVOH produce a high quality film which can be produced on an industrial scale.