Surface   photografting   modification   with
maleic anhydride (MAn) under UV irradiation in associa-
tion  with  a  post  reaction  with  triethanolamine  has  been
used  to  improve  the  flame  retardancy  of  polyamide6.6
(PA6.6) fabric in this study. The effects of irradiation time
and monomer concentration on the fabric surface grafting
were   investigated.   The   flame   retardancy   and   thermal
decomposition behavior of the samples were characterized
by  limiting  oxygen  index  test  (LOI),  thermogravimetric
analysis   (TGA),   and   differential   scanning   calorimetric
(DSC),  and  the  results  indicate  that  flame  retardancy  of

the  treated  PA6.6  fabric  samples  has  been  significantly
improved. The chemical structures of the treated samples’
surface  were  characterized  by  attenuated  total  reflection
infrared spectroscopy (ATR-FTIR), and the possible photo-
chemical mechanisms were discussed. It is suggested that
this could be the first time to use photografting technology
to  enhance  the  flame  retardancy  of  PA6.6  fabric.