Journal
MATERIALS
Volume 11, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/ma11020323
Keywords
GO-ZnO-PLLA; composite materials; nano-ZnO; antibacterial performance; mechanical properties
Categories
Funding
- National Natural Science Foundation of China [31460247, 81460542, 81760644]
- Biodegradable Materials Innovative Research Team (in Science and Technology) at the University of Yunnan Province
- Innovation Team Based on Research and Application of Biological Functional Materials of Yunnan Minzu University [2017HC034]
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Graphene oxide (GO) was employed for the preparation of GO-zinc oxide (ZnO). The hydroxyl group on the surface was exploited to trigger the l-lactide ring-opening polymerization. A composite material with poly(l-lactide) (PLLA) chains grafted to the GO-ZnO surface, GO-ZnO-PLLA, was prepared. The results demonstrated that the employed method allowed one-step, rapid grafting of PLLA to the GO-ZnO surface. The chemical structure of the GO surface was altered by improved dispersion of GO-ZnO in organic solvents, thus enhancing the GO-ZnO dispersion in the PLLA matrix and the interface bonding with PLLA. Subsequently, composite films, GO-ZnO-PLLA and GO-ZnO-PLLA/PLLA, were prepared. The changes in interface properties and mechanical properties were studied. Furthermore, the antibacterial performance of nano-ZnO was investigated.
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