1) Nylon, the first synthetic fiber in the "fully synthetic" was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s.
It was made using coal water and air and is a strong , elastic and light fibre.
2) Banana fiber is known as musa fibre and is one of the strongest natural fibre. Banana fiber also finds use in high-quality security/ currency paper, packing cloth for agriculture produce, ships towing ropes, wet drilling cables etc. Banana fiber a lignocellulosic fiber obtained from the pseudo-stem of banana plant (Musa sepientum), is a bast fiber with relatively good mechanical properties.