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本文用常压合成方法制备了中央嵌段为39个环氧乙烷单位的环氧丙烷-环氧乙烷-环氧丙垸三嵌段共聚醚P_xE_(3(?))P_x系列;用凝胶渗透色谱法(HPGPC)与质子核磁共振法(′HNMR)表征系列的嵌段组成;用小角X射线衍射(SAXD)、低频拉曼光谱、差示扫描量热法(DSC)研究了系列的固态结构形态。研究表明:固态的P_xE_(3(?))P_x共聚醚系列由单层晶片堆集而成,非折迭的分子鏈在片中的取向一般是傾斜于片的端面。
In this paper, the P_x series of P_xE_ (3)? P_x series of propylene oxide-ethylene oxide-propylene oxide triblock copolymer with 39 blocks of ethylene oxide as the central block was prepared by atmospheric synthesis. (HPGPC) and proton nuclear magnetic resonance (’HNMR) characterization series of block composition; using small angle X-ray diffraction (SAXD), low frequency Raman spectroscopy, differential scanning calorimetry (DSC) Solid state structure. The results show that the solid P_xE_ (3)? P_x copolyether series are formed by stacking single-layer wafers. The orientation of the non-folded molecular chains in the sheet is generally inclined to the end face of the sheet.