Acrylic base for placing under minerals, gems and fossils.

Acrylic fiber, also called polyacrylic, polyacrylonitrile or acrylic for short, is a synthetic fiber obtained from polymerization of acrylonitrile. Polyacrylic forms long linear molecules, which are very suitable for use as a (textile) fibre. Polyacrylonitrile (PAN) is an addition polymer produced from acrylonitrile via radical polymerization. Pure polyacrylonitrile is not suitable for making clothing because this plastic is highly flammable and does not adhere well to dyes. By adding small amounts of vinyl chloride to the polymer, the fire resistance is increased. The addition of styrene improves the adhesion of dyes. The acrylic fiber that is used to make textiles is a copolymer of approximately 85% acrylonitrile, supplemented with vinyl chloride, styrene and possibly other additives. Pure polyacrylic fibers can be converted into carbon fibers by pyrolysis.