Journal
POLYMERS FOR ADVANCED TECHNOLOGIES
Volume 33, Issue 4, Pages 1341-1347Publisher
WILEY
DOI: 10.1002/pat.5579
Keywords
biodegradability; mechanical property; poly(propylene carbonate); tannin acid; thermo-oxidative stability
Categories
Funding
- Fundamental Research Funds for the Central Universities [JUSRP121037]
- High Level Personnel Project of Jiangsu Province [JSSCBS20210853]
- MOE [B13025]
- SAFEA [B13025]
- National Natural Science Foundation of China [52103082]
- Natural Science Foundation of Jiangsu Province [BK20200625]
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In this work, a biodegradable poly(propylene carbonate) (PPC) with improved thermo-oxidative stability and biodegradability was successfully prepared by incorporating tannin acid. The composite exhibits improvements in Young's modulus and yield strength due to the plentiful hydrogen bond between PPC and tannic acid (TA). The improved properties are attributed to the abundant polyphenol hydroxyl in TA, which enhances the hydrophilia of PPC/TA composites and constructs plentiful hydrogen bonds with PPC.
It is a challenge to simultaneously enhance the thermo-oxidative stability, mechanical properties and biodegradability of biodegradable polymer. In this work, by incorporating tannin acid, a natural compound with polyphenol hydroxyl, a biodegradable poly(propylene carbonate) (PPC) with improved thermo-oxidative stability and biodegradability was successfully prepared. Besides, due to the existence of plentiful hydrogen bond between PPC and tannic acid (TA), the composite exhibits an obviously improved Young's modulus and yield strength while retaining a high break strain (>350%). The improved comprehensive properties should be ascribed to the abundant polyphenol hydroxyl in TA, which can consume oxygen, enhance the hydrophilia of PPC/TA composites and constructing plentiful hydrogen bond with PPC. We envision that this work offers a facile route to prepare PPC with high thermo-oxidative stability, mechanical properties, and biodegradability, and will promote the practical use of PPC.
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