COMPATIBILITY OF ALIPHATIC POLYSULFONES W ITH CRESOL-FORMALDEHYDE RESINS IN SOLUTION AND IN BLOCK

The compatibility of poly(alpha-olefinsulfones), having different leng ths of side substituents, with cresol-formaldehyde resins in solutions and blocks (films) was studied. As the length of the side chain incre ases in the series of polysulfones, the intermolecular interaction dec reases due to a lower contribution of the cohesive energy of SO2 group s to the total energy. These groups are also responsible for the forma tion of hydrogen bonds in polysulfone contacting with the resin. Of al l the studied pairs of polymers, the compatibility in solutions and fi lms was observed only for the compositions of poly(methyl pentenesulfo ne) with cresol-formaldehyde resins, mixed in low-polar solvents. The group of solvents favoring the susceptibility also depends on the resi n structure. A decrease in the molecular mass of poly(methyl pentenesu lfone) leads to increasing compatibility in solutions, although the ph ase separation is not completely eliminated.