【摘要】 以1,4-丁二醇(BDO)为引发剂,三氟化硼.乙醚(BF3.Et2O)为催化剂,使3-硝酸酯甲基-3-甲基氧杂环丁烷(NMMO)与四氢呋喃进行本体法阳离子开环聚合,得到端羟聚3-硝酸酯甲基-3-甲基氧杂环丁烷与四氢呋喃的共聚醚(PNT)。考察了分子量的可控性,并通过红外光谱、核磁共振氢谱和碳谱对共聚醚结构进行了表征。差示扫描量热法(DSC)测得PNT的玻璃化转变温度为-55.3℃,分解峰温为214.1℃。更多还原

【Abstract】 The energetic copolyether of 3-nitratomethyl-3-methyloxetane and tetrahydrofuran was synthesized using boron trifluoride etherate(BF3·Et2O) and 1,4-butanediol as an initiator system for the cationic ring-opening polymerization.The effects of reaction conditions were discussed,and the molecular weight could be controlled.The copolymer was characterized by IR,1H NMR and 13C NMR respectively.Meanwhile,the differential scanning calorimetry(DSC) show that the glass transition temperature of copolymer is-55.3 ℃,the peak temperature of decomposition is 214.1 ℃.更多还原