Abstract:

Ag/PA-6 composite particles were prepared with the combined dropping nonsolvent method and cooling temperature method in the presence of Ag particles in PA-6 formic acid solution under ultrasonic irradiation. The characterization results showed that Ag/PA-6 composite particles had abnormity and compact surface structure. The almost whole of Ag particles were encapsulated by PA-6，and no dissociative Ag particles surrounded PA-6 particles. With the same amount of 20% inorganic particles，composite particles prepared with phase separation had larger encapsulation ratio than those prepared with dispersion polymerization. The former encapsulation ratio was 81%，and the latter encapsulation ratio was 47%.