The crystal morphology and mechanical properties based on poly(l-lactic acid)/silica nanocomposites
The crystal morphology and mechanical properties based on poly(l-lactic acid)/silica nanocomposites
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DOI：
10.1088/1757-899x/213/1/012034
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发表时间：
2017-06
期刊：
影响因子：
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通讯作者：
Y. Cai
中科院分区：
文献类型：
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作者：
Y. Cai
将纳米二氧化硅（SiO2）引入聚L-乳酸（PLLA）基体中，制备了PLLA/SiO2纳米复合材料，并对其结晶形态、结晶行为和力学性能进行了研究。XRD测试结果表明，纳米SiO2对PLLA的结晶有促进作用，PLLA/SiO2纳米复合材料在等温结晶后出现尖锐的衍射峰。此外，通过POM分析，PLLA/SiO2样品具有典型的球晶结构，且球晶尺寸随着结晶温度的升高而变大。拉伸试验表明，少量SiO2的加入可以改善并保持PLLA的力学性能
Nano silica (SiO2) was introduced into Poly(L-lactic acid) (PLLA) matrix to prepare PLLA/SiO2 nanocomposites, and the crystal morphology, crystallization behavior and mechanical performance were investigated. The XRD experimental data indicated that nano SiO2 could improve the crystallization of PLLA, and PLLA/SiO2 nanocomposites exhibited sharp diffraction peak after isothermal crystallization. In addition, through the POM analysis, PLLA/SiO2 sample 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 SiO2 could improve and retain the mechanical performance of PLLA