The crystal morphology and mechanical properties based on poly(l-lactic acid)/silica nanocomposites

2017 Global Conference on Polymer and Composite Materials

材料科学;化学

Cai, Y.H.^1

Chongqing Key Laboratory of Environmental Materials and Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing

402160, China^1

关键词: Crystal morphologies;    Crystallization behavior;    Crystallization temperature;    Diffraction peaks;    Isothermal crystallization;    Mechanical performance;    Nano Silica;    Poly L lactic acid;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/213/1/012034/pdf
DOI  :  10.1088/1757-899X/213/1/012034

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Nano silica (SiO2) was introduced into Poly(L-lactic acid) (PLLA) matrix to prepare PLLA/SiO2nanocomposites, and the crystal morphology, crystallization behavior and mechanical performance were investigated. The XRD experimental data indicated that nano SiO2could improve the crystallization of PLLA, and PLLA/SiO2nanocomposites exhibited sharp diffraction peak after isothermal crystallization. In addition, through the POM analysis, PLLA/SiO2sample had the typical spherulite structure, and the size of the spherulite became larger with the increase of crystallization temperature. The tensile testing showed that a small amount of SiO2could improve and retain the mechanical performance of PLLA.