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Design and Synthesis of Waterborne Polyurethanes
Soo-Young Kang1, Zhaoxia Ji1, Ling-Fang Tseng1
1Living Proof, Inc., Cambridge, MA, 02142, USA.
Advanced Materials (Deerfield Beach, Fla.)
|March 16, 2018
Summary
This study synthesized over 300 waterborne polyurethanes (WBPUs) to identify key components influencing their properties. Optimal WBPUs with specific characteristics, like those incorporating linoleic acid, show promise for high-performance, natural-feel hair styling products.
Area of Science:
- Polymer Chemistry
- Materials Science
- Sustainable Chemistry
Background:
- Waterborne polyurethanes (WBPUs) are eco-friendly materials with diverse applications.
- Understanding the influence of synthesis components on WBPU properties is crucial for optimizing their performance.
Purpose of the Study:
- To systematically investigate the roles of key synthesis components in waterborne polyurethanes.
- To identify optimal WBPU properties for specific applications, using hair styling as a model.
- To enhance the sensory benefits of WBPUs in consumer products.
Main Methods:
- Synthesis of over 300 WBPUs with controlled precursor compositions and reaction conditions.
- Characterization of physicochemical properties, including Young's modulus and elongation at break.
- Incorporation and evaluation of various fatty acids to assess their impact on WBPU performance and feel.
Main Results:
- Identification of key synthesis components governing WBPU properties and applications.
- Determination of optimal property ranges (e.g., Young's modulus >150 MPa, elongation at break: 15-300%, moisture uptake <10%) for strong hair styling.
- Linoleic acid identified as a preferred additive for improving natural-feel sensory benefits.
Conclusions:
- WBPUs with precisely controlled properties are essential for effective hair styling applications.
- Fatty acid incorporation, particularly linoleic acid, enhances the natural feel of WBPU-based styling products.
- Optimized WBPUs are promising for developing strong, long-lasting, and natural-feeling hair styling solutions.
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