Developing a cerium lactate antibacterial nucleating agent for multifunctional polylactic acid packaging film

Yincai Wu; Xihai Hao; Fenglong Lin; Shenglong Wang; Lily Chen; Xintu Lin; Diansong Gan; Shuhong Fan; Lijun Song; Yuejun Liu

doi:10.1016/j.ijbiomac.2022.08.082

Developing a cerium lactate antibacterial nucleating agent for multifunctional polylactic acid packaging film

Int J Biol Macromol. 2022 Nov 1:220:56-66. doi: 10.1016/j.ijbiomac.2022.08.082. Epub 2022 Aug 13.

Authors

Yincai Wu¹, Xihai Hao², Fenglong Lin³, Shenglong Wang³, Lily Chen², Xintu Lin⁴, Diansong Gan², Shuhong Fan⁵, Lijun Song⁶, Yuejun Liu⁷

Affiliations

¹ Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, China.
² Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China.
³ Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, China.
⁴ Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China; Research & Development Center, Xiamen Changsu Industrial Company Limited, Xiamen 361028, China.
⁵ Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: f1s1h1@163.com.
⁶ Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials, Xiamen Institute of Rare Earth Materials, Chinese Academy of Sciences, Xiamen 361021, China; Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. Electronic address: slj@fjirsm.ac.cn.
⁷ Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, School of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, China. Electronic address: yjliu_2005@126.com.

PMID: 35973481
DOI: 10.1016/j.ijbiomac.2022.08.082

Abstract

With the rapid development of the packaging industry, people have high requirements for the functionality of packaging materials. As a representative biodegradable packaging material, polylactic acid (PLA) still has some problems. Multifunctional additives in PLA are an effective modification method. In this paper, cerium lactate (Ce-LA) was synthesized by a precipitation method and integrated into PLA to prepare a functional PLA composite. The results showed that Ce-LA not only significantly improved the crystallinity but also imparted antibacterial ability to PLA. When the concentration of Ce-LA was 0.9 %, the crystallinity of PLA reached 39.35 %, which was 77 % higher than that of pure PLA. When the addition of Ce-LA was 1.8 %, the antibacterial rates of PLA against Staphylococcus aureus and Escherichia coli reached 93 % and 85 %, respectively. This study provides a beneficial solution for the development of PLA packaging materials with high crystallinity and antibacterial properties.

Keywords: Antibacterial; Cerium lactate; Crystallinity; Multifunctional; Polylactic acid.

MeSH terms

Anti-Bacterial Agents / pharmacology
Cerium* / pharmacology
Escherichia coli
Food Packaging / methods
Humans
Lactic Acid*
Polyesters
Polymers

Substances

Anti-Bacterial Agents
Polyesters
Polymers
Cerium
Lactic Acid
poly(lactide)