Journal
BIOMACROMOLECULES
Volume 22, Issue 6, Pages 2676-2683Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.biomac.1c00361
Keywords
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Funding
- National Natural Science Foundation of China [21774036]
- Guangdong Province Science Foundation [2017GC010429]
- Science and Technology Program of Guangzhou [202002030329]
- Program for Interdisciplinary Direction Team in Zhongyuan University of Technology, China [4600-12370003]
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Efficiently preparing a sustainable and recyclable starch-based plastic with moisture insensitivity and toughness was achieved through a facile and eco-friendly method in this study. The starch acetoacetate film exhibited various glass transition temperatures and high fracture strength, showing potential for application in sustainable plastic materials.
Efficiently preparing a starch-based plastic with moisture insensitivity and toughness is a challenge to improve the high-value utilization of polysaccharide resources. Herein, a sustainable, recyclable starch-based plastic was prepared in a facile and eco-friendly way. First, starch acetoacetate (SAA) with different degrees of substitution (DSs) was synthesized by transesterification. Then, the SAA film was obtained through a solvent-free hot-pressing method. Notably, SAA with different DSs exhibited various glass transition temperatures (109-140 degrees C), and SAA with high DS (>0.84) was insoluble even after boiling in water for 1 h. Also, the maximum fracture strength of SAA film up to 15.5 MPa and a maximum elongation at break up to 30% were reached . In addition, the starch-based plastic film retained the original mechanical properties after three cycles of hot processing. In consideration of the facile preparation process, this protocol provided a new avenue for developing sustainable and recyclable starch-based plastics.
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