MISCIBILITY AND MECHANICAL-PROPERTIES OF ARYL-ALIPHATIC POLYAMIDES NYLON-6 MOLECULAR COMPOSITES

A series of aryl-aliphatic polyamides, copoly(4,4'-diaminobenzanilide- adipamide/2,6- naphthalamide)s, with feed mole ratios of adipic acid/2 ,6-naphthalene dicarboxylic acid of 1/9, 3/7, and 5/5 were synthesized . A new family of molecular composites based on the synthesized aryl-a liphatic polyamides and nylon 6 has been discovered. The molecular com posites were found to have at least partial miscibility between aryl-a liphatic polyamides and nylon 6. Well-defined aryl-aliphatic polyamide microfibrils a few nanometers in diameter were observed in the molecu lar composites. 10 wt% aryl-aliphatic polyamide clearly promoted the t oughness of nylon 6.