| 碳纳米管/PLA复合材料制备及性能 |
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| 引用本文： | 王劭妤,石坚,郑来云.碳纳米管/PLA复合材料制备及性能[J].复合材料学报,2012,29(6):50-54. |
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| 作者姓名： | 王劭妤 石坚 郑来云 |
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| 作者单位： | 1. 天津科技大学 材料科学与化学工程学院, 天津 300222;2. 天津出入境检验检疫局, 天津 300201 |
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| 基金项目： | 基金项目:天津科技大学实验室开放基金 |
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| 摘 要： | 采用溶液共混法制备纯化和酸化碳纳米管(CNTs)/PLA(聚乳酸)复合膜, 并对CNTs的分散性以及材料的结晶形态、 电性能和降解性能进行了研究。结果表明, 通过SEM观察到经过酸化处理的CNTs能较好地分散在PLA基体中; 在偏光显微镜下能观察到CNTs起到成核剂的作用, 明显细化了晶粒; 加入少量的酸化CNTs能够提高CNTs/PLA复合材料导电性, 体积电阻率下降了7个数量级; 同时, 酸化CNTs能够提高CNTs/PLA复合材料的降解性。
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| 关 键 词： | 聚乳酸 碳纳米管 结晶 导电 降解 |
| 收稿时间： | 2012-03-12 |
Preparation and properties of CNTs/PLA composites |
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| WANG Shaoyu,SHI Jian,ZHENG Laiyun.Preparation and properties of CNTs/PLA composites[J].Acta Materiae Compositae Sinica,2012,29(6):50-54. |
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| Authors: | WANG Shaoyu SHI Jian ZHENG Laiyun |
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| Affiliation: | 1. College of Material Science & Chemical Engineering, Tianjin University of Science & Technology, Tianjin 300222, China;2. Tianjin Entry-Exit Inspection and Quarantine Bureau, Tianjin 300201, China |
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| Abstract: | CNTs/PLA composites were prepared by solution blending method in the presence of pristine carbon nanotubes(MWCNTs)and carboxylated carbon nanotubes(MWCNTCOOH). The dispersity of CNTs, crystallization morphology, electric conductivity and degradation were studied. The results show that MWCNTCOOH are dispersed more homogeneously in PLA than the pristine MWCNTs by SEM. POM(Polarizing Optical Microscope) results shows that the MWCNTs act as effective nucleating agents and decrease the crystal size. With the addition of a little MWCNTCOOH, the volume resistivity of the nanocomposite decreases by 7 orders of magnitude, and the degradation also increases by MWCNTCOOH. |
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| Keywords: | PLA carbon nanotubes crystallization conductivity degradation |
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