Polylactide materials with ultraviolet filtering function by introducing natural compound

ABSTRACT

Through ring-opening polymerization of L-lactide, aloin, a natural compound, was bonded to the polymeric chains and the molecular structures of obtained PLA-An were characterized by FT-IR and NMR. Measurements on the UV-Vis absorption and fluorescence emission spectroscopy show that PLA-An has a characteristic absorption of aloin and a large Stokes shift at the state of solution in the PL, being capable of absorbing UV light and dissipating some of UV energy. Additionally, due to chemical bonds, aloin groups aren’t easy to be extracted by solvent, which allows aloin to play the role of ultraviolet absorption for a long time.

Graphical Abstract

KEYWORDS:

• Ring-Opening
• aloin
• polylactide
• chemically bonded
• UV-resistance

Acknowledgments

The authors appreciate financial supports from National Natural Science Foundation of China (NO. 51873124) and State Key Laboratory of Polymer Materials Engineering of China (Sichuan University) (NO. sklpme2019-2-04).

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Author Contributions

The manuscript was written through contributions of all authors. All authors have given approval to the final version of the manuscript.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [NO. 51873124]; State Key Laboratory of Polymer Materials Engineering of China (Sichuan University) [NO. sklpme2019-2-04].

Notes on contributors

Mengyao Wang

Ms. Mengyao Wang is studying for her master’s degree under the guidance of Prof. Yi Dan in the State Key Laboratory of Polymer Materials Engineering of China and the Polymer Research Institute of Sichuan University, Chengdu, China. Her research topic is about the barrier property of polylactide films.

Yanfeng Shen

Mr. Yanfeng Shen has completed his study of master’s degree under the guidance of Prof. Yi Dan in the State Key Laboratory of Polymer Materials Engineering of China and the Polymer Research Institute of Sichuan University, Chengdu, China. His research topic is about the UV-resistant polylactide.

Long Jiang

Dr Long Jiang is an associate professor in Polymer Science and Engineering of Sichuan University. He is mainly engaged in the research of polymer synthesis and modification.

Yun Huang

Dr Yun Huang is currently a postdoctoral fellow in Polymer Science and Engineering of Sichuan University. He is mainly engaged in the research of polymer synthesis and modification.

Yi Dan

Dr Yi Dan a professor in Polymer Science and Engineering of Sichuan University. Her research interests are about the polymer synthesis and modification, the polymer degradation and stabilization, and the environment-friendly materials.