raw material. as a result, rayon's properties are more similar to those of natural cellulosic fibers, such as cotton or linen, than those of thermoplastic, petroleum-based synthetic fibers such as nylon or polyester. although rayon is made from wood pulp, a relatively inexpensive and renewable resource...
lowest thermal conductivity of any natural or synthetic fibre ( compared to for wool, for viscose and for cotton). polypropylene fibres retain more heat for a longer period of time, have excellent insulative properties in apparel, and combined with its hydrophobic nature keeps wearer dry and warm. warmer...