Structural and mechanical changes of polyacrylate systems in correlation with their composition in degradative conditions

Thermal and photodegradation of copolymer system based on styrene, butyl acrylate, acrylic acid and N‐methylolacrylamide (S/BA/AA/MAA) shows mechanical, but no structural changes in examined temperature range and after 320 h of UV irradiation (simultaneously with 256 and 366 nm lamps). Content of acrylic acid is a very important factor for the mechanical stability of these systems which can be very successfully used as the coatings in the practice. Found correlations indicate mechanism and factors having influence on the excellent stability of copolymer films.