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Soybean oil-isosorbide-based waterborne polyurethane-urea dispersions
1Department of Chemistry, Iowa State University, Ames, IA 50011, USA.
Chemsuschem
|January 25, 2011
Summary
Soybean oil-based polyurethane-urea (PUU) coatings enhanced with isosorbide show improved mechanical strength and higher glass transition temperatures. This research offers a sustainable pathway for high-performance bio-based coatings.
Area of Science:
- Polymer Chemistry
- Materials Science
- Sustainable Materials
Background:
- Polyurethane-urea (PUU) dispersions are versatile materials for coatings.
- Developing high-performance coatings from renewable resources is a key sustainability goal.
Purpose of the Study:
- To synthesize and characterize soybean oil-based amide diol-isosorbide waterborne PUU dispersions.
- To investigate the impact of varying isosorbide content on PUU film properties.
Main Methods:
- Dynamic mechanical analysis (DMA)
- Differential scanning calorimetry (DSC)
- Thermogravimetric analysis (TGA)
- Mechanical testing (tensile strength, Young's modulus)
Main Results:
- Isosorbide incorporation significantly enhanced mechanical properties, increasing Young's modulus from 2.3 to 63 MPa and tensile strength from 0.7 to 8.2 MPa.
- Glass transition temperature increased with higher isosorbide content.
- Thermal stability showed a slight decrease with increasing isosorbide.
Conclusions:
- Isosorbide is an effective bio-based component for improving the performance of soybean oil-based PUU coatings.
- This study demonstrates a novel method for creating advanced coatings using renewable feedstocks.
- The developed PUU dispersions offer a sustainable alternative for high-performance coating applications.
