Characterization of organo-montmorillonite (OMMT) modified wood flour and properties of its composites with poly(lactic acid)
Characterization of organo-montmorillonite (OMMT) modified wood flour and properties of its composites with poly(lactic acid)
复制标题
有机蒙脱石(OMMT)改性木粉的表征及其与聚乳酸复合材料的性能
DOI:
10.1016/j.compositesa.2013.03.019
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发表时间:
2013-08
期刊:
影响因子:
--
通讯作者:
Yao Peng
中科院分区:
文献类型:
--
作者:
Ru Liu;Shupin Luo;Jinzhen Cao;Yao Peng
In this research, sodium-montmorillonite (Na-MMT) at four different concentrations (0.5%, 1.0%, 2.0% and 4.0%) and didecyl dimethyl ammonium chloride (DDAC) were used to modify wood flour (WF) in a two-step process to form organo-montmorillonite (OMMT) inside the WF. Then the WFs with three sizes were mixed with poly(lactic acid) (PLA) to produce WF/PLA composites. The treated WF was characterized and some physical and mechanical properties of the composites were tested. The results showed that: (1) Na-MMT was successfully transformed to OMMT and uniformly distributed inside WF; (2) at 0.5% MMT concentration, water repellency, flexural and tensile properties of the composites were improved significantly. However, after introducing more OMMT, the enhancements diminished because of poor interfacial adhesion caused by OMMT agglomeration; (3) the composites with the maximum size of WF showed the most significant improvements among all, suggesting bigger WF was more suitable for this modification process.
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DOI:
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发表时间:
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期刊:
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影响因子:
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