反应详情

FIG. 15 shows the thermal stability results of the copolymers in TG analysis, and Table 4 shows the thermal decomposition temperatures and char yields. All tested copolymers exhibit high thermal stability, including initial decomposition temperature of above 350° C., and the temperature at the maximal weight-loss rate (i.e. thermal decomposition temperature) of above 560° C. The char yields of all tested copolymers at 1000° C. in N2 are above 83%. As the pyrene feed content increases from 0% to 100%, the char yield of the resulting polymers increases at first and slightly declines, with the maximum char yield found as 87.6% for copolymer 95/5. The maximum char yield is much higher than that of conventional carbon precursors and aromatic polymers, and is much higher than the theoretical carbon content of pyrrole monomer of 71.5% and close to the theoretical carbon content of pyrene monomer of 95.1%. The high thermal stability and very high char yields of these copolymers can be ascribed to their high aromaticity.

1. customresults of the copolymers in TG analysis, and Table 4
2. customyields
3. customat the maximal weight-loss rate (i.e. thermal decomposition temperature) of above 560° C
4. temperaturethe char yield of the resulting polymers increases at first and slightly declines
5. customwith the maximum char yield
6. customThe maximum char yield
7. customThe high thermal stability and very high char yields of these copolymers