Abstract:
Polymer /MMT nanocomposite is a new class of material. They can attain excellent mechanical properties, thermal stability and barrier properties at lower clay content. Their potential applications include film, food packing, components in electrical parts, automobile and airplane.
In this thesis, The organic montmorillonite is prepared by ion-exchange reaction at the interlayer surfaces of Na-montmorillonite.The influences of different parameters on the ion-exchange reaction are studied.The results imply that it is easier to intercalate polyacrylamide melt into montmorillonite interlayer and to increase the interlayer distance of montmorilIonite by the hexadecyl trimethyl ammonium bromide (HTAB).The bset time of reaction time is four hour,the speed of mix round is 300 r/min ,and 80 degree centigrade is the best temperature of reaction.
Exfoliated polyacrylamide /montmorillonite nanocomposite was prepared by in-situ intercalation and copolymerization. HTAB was used to modify Na-montmorillonite (Na-MMT) and the interlayer spacing of MMT was increased by the HTAB. The structure of organic MMT obtained was then characterized by XRD and TEM.