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| 聚乳酸/木粉复合材料的力学及吸水性能研究 | |
| 引用本文： | 华晋,赵志敏,余伟,王田虎. 聚乳酸/木粉复合材料的力学及吸水性能研究[J]. 功能材料, 2011, 42(10) |
| 作者姓名： | 华晋 赵志敏 余伟 王田虎 |
| 作者单位： | 1. 南京航空航天大学自动化学院,江苏南京210016／南京林业大学机电学院,江苏南京210037 2. 南京航空航天大学理学院,江苏南京,210016 3. 南京林业大学机电学院,江苏南京,210037 |
| 基金项目： | 教育部博士点专项基金(博导类)资助项目(20093218110024); 国际合作资助项目(BZ2010060) |
| 摘 要： | 采用聚乳酸（PLA）及偶联剂马来酸酐（MAPP）对木粉进行改性,研究采用熔融共混方法制备的聚乳酸/木粉复合材料的力学性能、吸水性能、微观特性,以及宏观与微观之间的联系。研究结果表明力学性能方面,随着木粉含量从10g增加到25g,最大拉力增加了4倍,抗拉强度增加了3倍;偶联剂使用后,最大拉力和抗拉强度较未使用前最大增加值都超过了1倍。吸水性能方面,随着木材成分的增加,复合材料的吸水率同时增加,2和24h增重最多分别为2.85%和8.12%;偶联剂的使用降低了复合材料的吸水率,2和24h增重最多分别为0.72%和3.58%。最后使用电子扫描显微镜（SEM）观察发现同样木粉含量,添加偶联剂后界面更加光滑,PLA与木粉之间的粘合更紧密。 |
| 关 键 词： | 木粉 聚乳酸 吸水性 力学性能 微观特性 |
Mechanical properties and hygroscopicity of polylactic acid/wood-flour composite |
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| HUA Jin,,ZHAO Zhi-min,YU Wei,WANG Tian-hu. Mechanical properties and hygroscopicity of polylactic acid/wood-flour composite[J]. Journal of Functional Materials, 2011, 42(10) | |
| Authors: | HUA Jin ZHAO Zhi-min YU Wei WANG Tian-hu |
| Affiliation: | HUA Jin1,2,ZHAO Zhi-min3,YU Wei2,WANG Tian-hu3(1.College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China,2.College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037,3.College of Science,China) |
| Abstract: | The wood-flour was modified by polylactic acid(PLA) and maleic anhydride(coupling agent,MAPP).Composite materials were prepared by melt blending.The mechanical properties and water absorption of the wood-flour/PLA composite were researched,and the relationship between the macroscopic properties and the micro-characteristics was also analyzed.The results showed that with the wood-flour contents varied from 10g to 25g,the maximum tension increased 4 times,and the tensile strength increased 3 times.With the ad... |
| Keywords: | wood-flour PLA hydroscopic property mechanical property microcosmic property |
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