Acrylic fibers are synthetic fibers made from polyacrylonitrile with an average molecular weight of about 100,000.

Such properties closely resemble those of wool, and hence the most common use of acrylics in apparel and carpets is as a wool replacement—for example, in knitwear such as sweaters and socks.

For a fiber to be called "acrylic" in the US, the polymer must contain at least 85% acrylonitrile monomer. Part II considers properties that are related to the comfort of different fabrics made from fibers. Chemical Properties of Acrylic: Chemical properties of acrylic fibers are given below. Acrylic Fibers Properties. Acrylics with a looser, more open weave, however, are less water resistant because the water can pass through the holes left between the fibers. It is about 30% bulkier than wool. Kicking off our series is acrylic, the fiber behind most Sunbrella brand fabrics. For a fiber to be called "acrylic" in the US, the polymer must contain at least 85% acrylonitrile monomer. We need to make sure that the customer is aware of the properties and characteristics of the fabrics. Modacrylic is a modified acrylic fiber that is composed of less than 85%, but at least 35% by weight of acrylonitrile monomer. Typical co-monomers are vinyl chloride, vinylidene chloride or vinyl bromide. Acrylic is comfortable to wear.
For a called as 'Acrylic”. Moths, Mildew and insects do not attack Acrylic.

Yet, it is easy care and is machine washable or dry cleanable. Acrylic Fiber is synthetic Fiber is made of polymerization of acrylonitrile with an molecule weight above ~100000, about 1900 monomer unit.
If less than 85% by weight but at least 35% by weight is based on acrylonitrile, the fiber is referred to as a modacrylic.

We need to make sure that the customer is aware of the properties and characteristics of the fabrics. It has a good resistance to mineral acids. Labeling of items of clothing with acrylic (see acrylic fiber) means the polymer consists of at least 85% acrylonitrile as monomer. Continue to Fiber/Fabric Care Or, Return to Seminar Index. It is spun by either dry spinning or wet spinning. It is the designer's responsibility to select the appropriate fabrics for their intended applications, but it is the responsibility of the fabric producer to provide as much information as possible to help customers make appropriate fabric selections. Its density is 1.17 g/cc as compared to 1.32 g/cc of wool. Organic solvent: Organic solvents do not cause harm to the acrylic fiber. different fibers are chosen for different applications, why fiber properties vary under different conditions (wet vs. dry, knotted vs. straight), and how natural and synthetic fibers compare.

Prolonged exposure to moisture, or even total immersion in water, does not significantly effect the mechanical or optical properties of acrylic. Typical Co-monomer are vinyl acetate or methyl acrylate. Typical co-monomers are vinyl acetate and methyl acrylate. An acrylic woven with a very tight weave will keep water from seeping through the fabric. GENERAL PROPERTIES Acrylics offer high light transmittance with a Refractive Index of 1.49 and can be easily heat-formed without loss of optical clarity. Modacrylic Fibers Properties.