Category: Materials and the Environment: Eco-Informed Material Choice

Polychloroprene (Neoprene, CR)

The material. Polychloroprenes (Neoprene, CR), the materials of wetsuits, are the leading nontire synthetic rubbers. First synthesized in 1930, they are made by a condensation polymerization of the monomer 2-chloro-1,3 butadiene. The properties can by modified by copolymerization with sulfur, with other chloro-butadienes and by blending with other polymers to give a wide range of […]


The material. Ethylene-Vinyl-Acetate elastomers (EVA) are built around polyethylene. They are soft, flexible, and tough and retain these properties down to -60°C and have good barrier properties as well as FDA approval for direct food contact. EVA can be processed by most normal thermoplas­tic processes: co-extrusion for films, blow molding, rotational molding, injection molding, and […]

Butyl rubber

The material. Butyl rubbers (BRs) are synthetics that resemble natural rubber in properties. They have good resistance to abrasion, tearing, and flexing, with exceptionally low gas permeability and useful properties up to 150°C. They have low dielectric constant and loss, making them attractive for electrical applications. Composition (CH2-C(CH3)-CH-(CH2)2-C(CH3)2)n General properties Density 900 – 920 kg/m3 […]