用熔融共混的方法制备了碳纳米管（CNTs）/聚乳酸（PLA）复合材料,观察了其球晶形貌和断面形貌,并研究了不同配比的CNTs/PLA复合材料的结晶性能和水解性能。结果表明：CNTs可以作为异相成核剂提高PLA的结晶速率和结晶度,CNTs质量分数为1%时,复合材料的结晶度达到44.9%,CNTs能够在基体中均匀分散;CNTs质量分数小于1%时,断面呈中间层破形貌;随CNTs含量增多,复合材料的球晶直径变大;CNTs能降低PLA的水解速率。
Carbon nanotubes（CNTs）/poly（lactic acid）（PLA） composites were prepared by melt blending method.The morphology of spherulitic crystal and fracture was observed,and the crystallinity and the hydrolysis properties of CNTs/PLA composites with different ratios were studied.The results show that CNTs could act as heterogeneous nucleators and increase the crystallinity rate and degree of PLA,the crystallinity degree could reach 44.90% when CNTs content was 1wt%,and CNTs could disperse homogenously in matrix.The fracture took on mid-layer damage morphology when CNTs content was less than 1wt%,and the spherulitic crystal diameter of composite increased with the increase of CNTs content,CNTs could reduce the hydrolysis rate of PLA.
参考文献
| [1] | Seamus A. Curran;Donghui Zhang;Wudyalew T. Wondmagegn .Dynamic electrical properties of polymer-carbon nanotube composites: Enhancement through covalent bonding[J].Journal of Materials Research,2006(4):1071-1077. |
| [2] | Wenhui Song;Zhen Zheng;Weiliang Tang .A facile approach to covalently functionalized carbon nanotubes with biocompatible polymer[J].Polymer: The International Journal for the Science and Technology of Polymers,2007(13):3658-3663. |
| [3] | Chin-San Wu;Hsin-Tzu Liao .Study on the preparation and characterization of biodegradable polylactide/multi-walled carbon nanotubes nanocomposites[J].Polymer: The International Journal for the Science and Technology of Polymers,2007(15):4449-4458. |
| [4] | 张艺,程开良,许家瑞.调制式差示扫描量热法在高分子研究中的应用[J].化学通报,2004(05):341-348. |
| [5] | 吴捷 .碳纳米管在低密度聚乙烯基体中的形态研究[D].黑龙江大学,2007. |
| [6] | Pluta M;Paul MA;Alexandre M;Dubois P .Plasticized polylactide/clay nanocomposites. II. The effect of aging on structure and properties in relation to the filler content and the nature of its organo-modification[J].Journal of Polymer Science, Part B. Polymer Physics,2006(2):312-325. |
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