Composition and method for forming an article having improved properties

A method of forming an article, said method comprising the steps of:

• providing a base resin substantially free of polyphenylene sulfides and comprising at least one of a polyether sulfone and a polysulfone, wherein the base resin has terminal groups selected from at least one of hydroxyl groups, alkoxy groups, alkylene halide groups, and halogens and a weight-average molecular weight of from 20,000 to 50,000;
• providing a plasticizer substantially free of styrenic compounds and present in an amount of from 1 to 25 parts by weight based on 100 parts by weight of the composition, wherein the plasticizer comprises a copolymer of (i) an alkylene and (ii) an epoxy-containing compound present in an amount of from 1 to 20 parts by weight based on 100 parts by weight of the plasticizer;
• and
• forming the article from the base resin and the plasticizer via an extrusion process or an injection molding process.

An article formed from an extrusion process or an injection molding process, said article comprising:

• (A) a base resin substantially free of polyphenylene sulfides and comprising at least one of a polyether sulfone and a polysulfone, wherein said base resin has terminal groups selected from at least one of hydroxyl groups, alkoxy groups, alkylene halide groups, and halogens and a weight-average molecular weight of from 20,000 to 50,000;
• and
• (B) a plasticizer substantially free of styrenic compounds, wherein said plasticizer comprises a copolymer of;
• (i) an alkylene, and
• (ii) an epoxy-containing compound present in an amount of from 1 to 20 parts by weight based on 100 parts by weight of said plasticizer.