High-performance biodegradable polylactide composites fabricated using a novel plasticizer and functionalized eggshell powder

Junjun Kong; Yi Li; Yungang Bai; Zonglin Li; Zengwen Cao; Yancun Yu; Changyu Han; Lisong Dong

doi:10.1016/j.ijbiomac.2018.01.153

High-performance biodegradable polylactide composites fabricated using a novel plasticizer and functionalized eggshell powder

Int J Biol Macromol. 2018 Jun:112:46-53. doi: 10.1016/j.ijbiomac.2018.01.153. Epub 2018 Jan 31.

Authors

Junjun Kong¹, Yi Li², Yungang Bai², Zonglin Li¹, Zengwen Cao³, Yancun Yu⁴, Changyu Han⁵, Lisong Dong²

Affiliations

¹ Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China; University of Chinese Academy of Science, Beijing 100049, China.
² Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China.
³ Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China; University of Science and Technology of China, Hefei 230026, China.
⁴ Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China. Electronic address: yuyc@ciac.ac.cn.
⁵ Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China. Electronic address: cyhan@ciac.ac.cn.

PMID: 29374566
DOI: 10.1016/j.ijbiomac.2018.01.153

Abstract

A novel polyester poly(diethylene glycol succinate) (PDEGS) was synthesized and evaluated as a plasticizer for polylactide (PLA) in this study. Meanwhile, an effective sustainable filler, functionalized eggshell powder (FES) with a surface layer of calcium phenyphosphonate was also prepared. Then, PLA biocomposites were prepared from FES and PDEGS using a facile melt blending process. The addition of 15 wt% PDEGS as plasticizer showed good miscibility with PLA macromolecules and increased the chain mobility of PLA. The crystallization kinetics of PLA composites revealed that the highly effective nucleating FES significantly improved the crystallization ability of PLA at both of non-isothermal and isothermal conditions. In addition, the effective plasticizer and well-dispersed FES increased the elongation at break from 6% of pure PLA to over 200% for all of the plasticized PLA composites. These biodegradable PLA biocomposites, coupled with excellent crystallization ability and tunable mechanical properties, demonstrate their potential as alternatives to traditional commodity plastics.

Keywords: Crystallization; Plasticization; Polylactide.

MeSH terms

Animals
Biodegradable Plastics / chemical synthesis
Biodegradable Plastics / chemistry*
Crystallization
Egg Shell / chemistry*
Plasticizers / chemistry
Polyesters / chemical synthesis
Polyesters / chemistry*
Powders / chemistry

Substances

Biodegradable Plastics
Plasticizers
Polyesters
Powders
poly(lactide)