The structure of polysulphone-nylon 6 block copolymer film was studied by inverse GC

electron microscope and polarizing microscope. The heat of adsorption of water on the surface of this block copolymer was determined by IGC. Experimental results show that the crystallinity of nylon 6 is decreased by the addition of polysulph-one component

and the copolymer formed is composed of nylon 6 crystal domains and amorphous domains comprising both nylon 6 segments and polysulphone segments. IGC results also show that the compatibility of the two components is relatively poor.