The data from the impact assessments of M1 and M2 are shown in Fig. . The LCIA results are presented in Table . M1 has a 40% lower environmental impact than M2 in almost all the impact categories (Fig. ). The higher impact of M2 could be attributed to the additional modification step and the high use of solvent and energy. Nevertheless, both M1 and M2 display the same impact on WDP due to similar water consumption during fabrication.