Agricultural and Biosystems Engineering Publications
Campus Units
Agricultural and Biosystems Engineering, Horticulture, Materials Science and Engineering
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
2014
Journal or Book Title
RSC Advances
Volume
4
First Page
39802
Last Page
39808
Research Focus Area(s)
Biological and Process Engineering and Technology
DOI
10.1039/C4RA04455J
Abstract
The PHA/DDGS composite is a promising low-cost, bio-based material for use in crop containers for the horticulture industry. This research effort has quantified the effects on mechanical and thermal properties of adding different amounts of DDGS to a PHA matrix. PHA and DDGS were mixed using a twin-screw microcompounder. Fracture surface morphology and thermal and rheological properties were evaluated using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), and rheometer measurements. The adhesion between PHA and DDGS decreased with an increase in DDGS content from 10% to 30%. Melting temperature and crystalline temperature decreased with the increasing content of DDGS filler, indicating that PHA and DDGS interacted favorably. The complex viscosity and elastic shear modulus of the blends were increased by the increasing DDGS content. The storage modulus and glass transition temperature showed little change across the different ratios of DDGS, indicating that DDGS should be a useful filler that can decrease the cost of PHA-based materials significantly while preserving the dynamic mechanical properties and glass transition temperature.
Copyright Owner
The Royal Society of Chemistry
Copyright Date
2014
Language
en
File Format
application/pdf
Recommended Citation
Lu, Hong; Madbouly, Samy A.; Schrader, James A.; Kessler, Michael A.; Grewell, David A.; and Graves, William R., "Novel bio-based composites of polyhydroxyalkanoate (PHA)/distillers dried grains with solubles (DDGS)" (2014). Agricultural and Biosystems Engineering Publications. 839.
https://lib.dr.iastate.edu/abe_eng_pubs/839
Included in
Bioresource and Agricultural Engineering Commons, Horticulture Commons, Polymer and Organic Materials Commons
Comments
This is a manuscript of an article published as Lu, Hong, Samy A. Madbouly, James A. Schrader, Micheal R. Kessler, David Grewell, and William R. Graves. "Novel bio-based composites of polyhydroxyalkanoate (PHA)/distillers dried grains with solubles (DDGS)." RSC Advances 4, no. 75 (2014): 39802-39808. DOI: 10.1039/C4RA04455J. Posted with permission.