After the CH 2 flexible spacers were introduced between the main chains and rigid side chains of these copolymers, the RSMA CH 2 DHBA and RSMA CH 2 THBA grafting copolymers had two glass transitions due to the de coupling effect of flexible spacers.

• RSMA CH2 DHBA和RSMA CH2 THBA共聚物中引入的CH2 柔性间隔起去偶作用 ,减小了刚性侧链与主链之间的相互作用 ,使共聚物表现出双玻璃化现象