AMIDATION OF LINEAR LOW DENSITY POLYETHYLENE TO PREPARE INTERPENETRATING NETWORKS WITH SOME TRADE NETWORKS

Abstract

Polyethylene was known as an inert polymer and cannot compatible or reacted with other polymers. In this work, the inert linear low-density polyethylene (LLDPE) was grafted by the reactive group maleic anhydride. The grafted polymer can be reacted with alcohols in order to prepare the poly ester of LLDPE. Added of diamine to polyester produce polyamide network. IPNs from the amide networks and networks of commercial epoxy resin and of phenol-formaldehyde polymer were prepared. The chemical structure of the amide networks and their IPNs were studied by FTIR. The results show that there are no chemical reaction between the different networks, but physical association can be present between the network. The thermal properties of the IPNs were investigated. The results show enhancement of the thermal stability of the networks through their IPNs. XRD analysis of the prepared networks many crystalline regions. Many crystalline regions were disappeared or changed their volume and new crystalline regions have been appeared through the preparation of IPNs with phenol formaldehyde or epoxy networks.