Abstract
Using agricultural wastes (bagasse) and polyol derived from soy oil as raw materials to develop biodegradable rigid polyurethane foams (RPUFs) is beneficial to reduce the dependence on petroleum resources and promote the sustainable socioeconomic and environmental development. This study focuses on bagasse as a functional filler to improve and control the mechanical properties and biodegradability of the RPUFs. With the increasing levels of bagasse content, the density and mechanical properties of RPUFs increase. The biodegradation of RPUFs has a greater enhancement compared to the foam without bagasse, and all bio-foams have excellent thermal insulation properties. All changes in foam performance are due to the fact that the active hydroxyl groups on bagasse react with excess isocyanate to form urethane, which affects the structure of RPUFs. In this study, scientific design and molecular regulation theory were applied to improve the utilization value of bagasse and develop high-performance biodegradable RPUFs for thermal insulation materials.
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Acknowledgements
The authors thank the financial support from the National Natural Science Foundation of China (51773159, 51303142), the Science and Technology Planning Program of Guangdong (No. 2015A010105018), Special fund of Guangdong academy of Science (No. 2018GDASCX-0105), and the Open Foundation of Key laboratory of Processing and Quality Evaluation Technology of Green Plastics of China National Light Industry council, Beijing Technology and Business University, Beijing 100048, China (BS201707).
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Yu, Z., Xiao, Y., Tian, H. et al. Bagasse as functional fillers to improve and control biodegradability of soy oil-based rigid polyurethane foams. Korean J. Chem. Eng. 36, 1740–1745 (2019). https://doi.org/10.1007/s11814-019-0349-0
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DOI: https://doi.org/10.1007/s11814-019-0349-0