中文摘要：

以1,3-二（4-氯甲酰基苯甲酰基）苯（i-DMBC）和1,4-二（4-苯氧基苯甲酰基）苯（p-DPOPKK）为单体,通过低温溶液共缩聚反应合成了主链含多酮基的聚芳醚酮。用差示扫描量热法（DSC）及广角X射线衍射（WAXD）技术研究了含多酮基聚芳醚酮的结晶行为。研究结果表明,多酮基聚芳醚酮聚合物中存在多晶型,通过等温结晶、冷牵伸取向等方式对熔融-淬火处理后的无定型聚合物进行诱导结晶,可以改变聚合物的结晶度及结构中不同晶型的比例。

英文摘要：

Poly（aryl ether ketone） containing multi-ketonic linkage（PEKKEKK-i-KK） was synthesized by low temperature solution polycondensation of 1,4-bis（4-phenoxybenzoyl）benzene with 1,3-di（4-chloro formyl benzoyl）benzene. The crystallization of PEKKEKK-i-KK was characterized by differential scanning calorimetry （DSC） and wide-angle X-ray diffraction （WAXD）. The results show that there are FormⅠ and FormⅡ crystals in the polymer,and crystal FormⅠ is more stable than the crystal FormⅡ. The ratio of FormⅠ and FormⅡ can be changed by means of different treatment,such as induced crystallization of thermal treatment,elongation and so on. Moreover,the crystal type of FormⅠ of the polymer can be obtained via elongation treatment.