Fiber-induced crystallization in polymer composites: A comparative study on poly(lactic acid) composites filled with basalt fiber and fiber powder

Hongwei Pan; Xiangyu Wang; Shiling Jia; Zifeng Lu; Junjia Bian; Huili Yang; Lijing Han; Huiliang Zhang

doi:10.1016/j.ijbiomac.2021.04.104

Fiber-induced crystallization in polymer composites: A comparative study on poly(lactic acid) composites filled with basalt fiber and fiber powder

Int J Biol Macromol. 2021 Jul 31:183:45-54. doi: 10.1016/j.ijbiomac.2021.04.104. Epub 2021 Apr 20.

Authors

Hongwei Pan¹, Xiangyu Wang², Shiling Jia¹, Zifeng Lu², Junjia Bian¹, Huili Yang¹, Lijing Han³, Huiliang Zhang¹

Affiliations

¹ Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China.
² Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China.; University of Science and Technology of China, Hefei 230026, China.
³ Key Laboratory of Polymer Ecomaterials, Chinese Academy of Sciences, Changchun Institute of Applied Chemistry, Changchun 130022, China.. Electronic address: ljhan@ciac.ac.cn.

PMID: 33892033
DOI: 10.1016/j.ijbiomac.2021.04.104

Abstract

The poly(lactic acid) (PLA) composites with the silane coupling agent treated basalt fiber (SBF) and basalt fiber powder (SBFP) were prepared. The crystalline morphology, mechanical properties, and heat resistance of PLA/SBF/SBFP composites were investigated. The results indicated that SBF or SBFP not only acted as heterogeneous nucleating agents for PLA crystallization but also improved the mechanical properties and heat resistance of PLA. Morphological analyses showed that SBFP could play nucleating role to reduce the spherulites size of PLA, and SBF could restrict the mobility of PLA chains and construct interface crystallization for PLA during isothermal crystallization process. The composites with higher SBF loading, the "Transcrystalline-network" built in the composites significantly improved the heat resistance properties of PLA. Due to the synergistic effect of SBF and SBFP, the PLA/SBF/SBFP composites showed high heat deformation temperature (HDT), especially after isothermal crystallization, the HDT increased to 150.5 °C for the PLA/SBF/SBFP 50/10/40 composite, much higher (about 190%) than that of pure PLA (71.7 °C).

Keywords: Basalt fiber; Biodegradable; Poly(lactic acid).

Publication types

Comparative Study

MeSH terms

Crystallization
Molecular Conformation
Polyesters / chemistry*
Powders
Silicates / chemistry*
Temperature

Substances

Polyesters
Powders
Silicates
basalt
poly(lactide)