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《Materials for Mechanical Engineering》 2012-01
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Preparation and Properties of Carbon Nanotubes/Poly(Lactic Acid) Composites

ZHUANG Wei1,2,3,WANG Ju-hua1,2,JI Qing-lin1,2,YU Qiang1(1.School of Material Science and Engineering,Changzhou University,Changzhou 213164,China; 2.Changzhou High Technology Research Institute of Nanjing University,Changzhou 213164,China; 3.School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China)  
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.
【CateGory Index】: TB33
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