Reference Work Entry

Polymer Blends Handbook

pp 951-976

Applications of Polymer Alloys and Blends

  • J. J. ScobboJr.Affiliated withGeneral Electric Plastics
  • , Lloyd A. GoettlerAffiliated withDepartment of Polymer Engineering, University of Akron


Since their widespread commercialization, the applications of polymer blends have been directed at replacement of traditional materials, most commonly, metals. Although plastic raw materials can be more costly than metals on a weight basis, they are often more economical in terms of final manufactured cost [Paul and Newman, 1978; Legge et al., 1987; Utracki, 1989, 1998; Datta and Lohse, 1996; Louise, 1997]. This is because plastic parts can consolidate many functions into fewer parts, usually require less complex assembly (e.g., they are amenable to snap fitting and ultrasonic welding) and can be easily formed (by injection molding) into complex finished shapes, even incorporating textured or high gloss surfaces. In use they are more corrosion resistant as well as lighter in weight than metals, which is especially important for fuel economy in automotive applications.