Morphology of Textile Fibers

1. Crystalline Regions: Crystalline Regions are the regions that cannot absorb water, humidity and dyestuff solutions but they are the part for fiber strength.
2. Non-Crystalline Regions: Non-Crystalline Regions or Amorphous regions are the regions that can absorb water, humidity and dyestuff therefore they can be dyed but they are a very weak part of the fibers.
3. Orientation of the Crystalline Regions alongside the fiber axis 

This property is very important in that it will increase the tensile strength of the fiber if it presents in the optimal quantity.