| 摘要 |
A blend comprising: (i)a polymeric material (A) having a repeat unit of formula -O-Ph-O-Ph-CO-Ph- (I) and a repeat unit of formula -O-Ph-Ph-O-Ph-CO-Ph- (II) wherein Ph represents a phenylene moiety; and (ii)a polymeric material (B) having a repeat unit of formula (XX) wherein t1 and w1 independently represent 0 or 1 and v1 represents0, 1 or 2. |
