Crystalline and Amorphous Structure of Fiber January 21, 2017 Md Sohanur Rahman Sobuj 013.76K Textile Physics-1 Amorphous region of the fiber is defined as the region of the fiber where there is no longer the order of chain molecules. The polymer chains are randomly placed in amorphous region. As a result, there is more air space in the amorphous fiber. Read more Cost Saving in Cotton Spinning: Energy Efficiency and Innovative Solutions