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TEXTILE POLYMERS

                  Liquid  Crystal,  characterized  by  orientation  order,  are  ubiquitous.  Their  unique

responsively  arises  as  a  result  of  symmetry.  This  article  gives  a  brief  overview  of  their

history, fundamental aspects, applications and prospects. Liquid Crystal Polymers can now be

used  as  resins  for  textile  composites.  A  Number  of  main-chain  LCPs  and  Lightly  Cross

Linked Polymers incorporating p-terphenyl rods, and some pentaphenyl rods, capable of 90

degree  re-orientation  have  been  synthesized.  NASA  Langley  research  center  has  used

aromatic  Liquid  Crystalline  Resins  for  making  the  reusable  launch  vehicles.  Aromatic

copolyester fiber LCP, Celanese Vectran, is applied to make a composite material. Vectran is

used as a Reinforcing High Strength fiber. Warwick is a world class manufacturer of Vectran

Fiber-Based  materials.  LCP  XYDAR  is  a  glass  fiber  or  mineral  filled  resin.  It  is  used  as  a

flame  retardant.  Common  structures  of  liquid  crystal  phases  are  Smectic  A,  Smectic  C,

Nematic.  LCPs  are  used  in  Liquid  Crystal  Display.  It  is  applied  in  many  new  applications

also.



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