FTIR Study on the Complexation of the PA6/CaCl_2 Composites

The changes of wave number of N-H,amide Ⅰ and amide Ⅱ related to hydrogen bond in PA6/CaCl2 complexes were studied by FTIR.With the priorities of the complexation by oxygen atoms or nitrogen atom,and the mechanism of the FTIR of amide groups,the paper proposed two assume of the mechanism of the complexation to confirm that complex bonds between calcium chloride and nitrogen atom of gradually formed,and calcium chloride were inserted into the molecular chains of nylon 6,which weaken the hydrogen bonds between the molecular chains of nylon 6 and damage the three-dimensional ordered structure of nylon 6,so the crystallinity of nylon 6 decreased.