“…On the other hand, better wetting can enhance the IFSS by improving the work of adhesion, high surface energy indicates that fiber contains more polar groups on the surface, interfacial adhesion can be improved by the strong interaction between resin and the polar groups. 1,2 PPESK is a kind of novel thermoplastic (the structure is shown in Fig. 1), compared with traditional thermoplastic [3][4][5][6] (such as: PEEK, PES, PEI), it has excellent thermal resistance property (T g ¼ 2878C), besides it can be dissolved in usual solvents (such as DMAc, NMP, and chloroform), thus fibers-reinforced PPESK composite can be prepared through solution impregnation technique.…”