HYBRIDIZATION OF CARBON NANOTUBES WITH CLAY AND THEIR NYLON NANOCOMPOSITES
会议名称：《5th International Symposium on Engineering Plastics》
会议日期：2011年
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
关 键 词：Carbon nanotubes Clay Hybridization Exfoliation Nylon Nanocomposites
摘 要：正Fine dispersion or full exfoliation of nanoparticles in matrix is one of the most important factors to achieve high performance polymer *** this talk,mechanically robust,magnetic nylon-6 nanocomposites reinforced by 1D carbon nanotube（CNT）-2D clay nanoplatelet hybrids have been prepared using simple melt-compounding *** direct iron-catalyzed chemical vapor deposition growth of multi-walled carbon nanotubes utilizes iron oxide-immobilized clay nanoplatelets as substrates,carrying out in-situ intercalation and exfoliation of clay nanoplatelets[1].By using such hybridization and co-exfoliation method,the as-obtained heterostructured hybrids used without any purification are demonstrated to be ideal and excellent nanofillers for mechanical reinforcement for fabricating nylon-6 nanocomposites,due to their homogeneous dispersion and strong interfacial interaction with the polymer *** nucleation sites provided by the nanohybrids seem to be favorable to the formation of thermodynamically stable a-phase crystals of nylon-6 with much higher stiffness and hardness thanγ-form of nylon-6,namely,a silicate-induced crystal transformation from theα-form to theγ-form of nylon-6 was greatly inhibited or shielded by the CNTs wrapped clay ***,the nanostructured CNT-clay hybrid heterostructures containing residual iron oxide nanoparticles show novel magnetic properties either in bulk solids or in polymer nanocomposites[2].Therefore,this can be probably developed into a facile and practical method to fabricate polymer nanocomposites with high performance and multi-functionality.