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| 可反应性纳米二氧化硅对聚乳酸结晶行为的影响 | |
| 引用本文： | 徐翔民,杨丽苏,张予东. 可反应性纳米二氧化硅对聚乳酸结晶行为的影响[J]. 河南化工, 2012, 0(9): 30-34 |
| 作者姓名： | 徐翔民 杨丽苏 张予东 |
| 作者单位： | 1. 黄河水利职业技术学院机电工程系,河南开封,475004 2. 河南省体育运动学校理科教研室,河南郑州,450045 3. 河南大学化学化工学院,河南开封,475004 |
| 摘 要： | 通过熔融共混法制备了聚乳酸（PLLA）／可反应性纳米二氧化硅（RNS）复合材料，用透射电子显微镜观察RNS在PLLA基体中的分散情况，用差示扫描量热仪（DSC）和X射线衍射仪（XRD）对复合材料的非等温结晶行为进行了研究，并利用Jeziomy法和Mo法对复合材料的非等温结晶动力学进行分析。结果表明，RNS在PLLA中分散均匀，RNS的加入虽不会改变PLLA的晶型，但RNS与PLLA之间的相互作用及其异相成核能力会对聚乳酸基体的结晶速率和结晶度产生影响，导致材料结晶过程发生变化。 |
| 关 键 词： | 聚乳酸 纳米二氧化硅 非等温结晶动力学 复合材料 |
Effect of Reactable Nano - SiO2 on the Crystallization Behavior of PLLA |
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| XU Xiang-min,YANG Li-su,ZHANG Yu-dong. Effect of Reactable Nano - SiO2 on the Crystallization Behavior of PLLA[J]. Henan Chemical Industry, 2012, 0(9): 30-34 | |
| Authors: | XU Xiang-min YANG Li-su ZHANG Yu-dong |
| Affiliation: | 1.Department of Mechanical and Electrical Engineering,Yellow River Conservancy Institute,Kaifeng 475000,China;2.Department of Science,Henan Sports School,Zhengzhou 450045,China;3.College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,China) |
| Abstract: | PLLA/reactable nano-SiO2(RNS) nanocomposites are prepared by melting blending,the microphotographs of PLLA/RNS nanocomposites are investigated with transmission electron microscopy(TEM),and the crystallization behavior of PLLA and its nanocomposites are characterized by differential scanning calorimetry(DSC) and X-ray diffraction(XRD) measurements,and Jeziorny model and Mo model are also selected to discussed the nonisothermal crystallization behavior of the PLLA and its nanocomposites.The result shows that RNS nanoparticles are homogeneously dispersed in the PLLA matrix,and that the addition of RNS does not change the crystalline form of PLLA but can influence the crystallization rate and crystallinity of PLLA matrix due to the heterogeneous nucleation effect of RNS and the interaction between RNS and the PLLA chains. |
| Keywords: | poly ( 1 - lactide) nano - SiO2 non isothermal crystallization kinetics composites |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |