Compared with Congo red-PVAL, the polarizing rates of GGHC-1-PVAL was improved over 20%, the wavelength range at degree of polari- zation>40% was improved about 45 nm.

• 与刚果红染料膜相比,GGHC-1-PVAL膜在最大吸收波长处的偏光度增加20%25;