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研究了1,3-二(炔丙基氧)苯(BPOB)与4,4’-二叠氮甲基联苯(DAMBP)的本体聚合行为.核磁共振氢谱(1HNMR)表征了聚合物的结构,通过傅立叶红外技术(FT-IR)观察了反应过程中的基团变化情况,采用差示扫描量热技术(DSC)研究了聚合反应动力学,在较低温度(80℃)下二元叠氮与二元炔发生了1,3-偶极环加成聚合反应,生成了主链含三唑环的聚合物;利用Kissinger法和Crane法处理得到了反应的动力学参数:反应级数为0.92,反应活化能Ea为79.8kJ·mol-1,频率因子A为1.26×1010min-1.利用凝胶渗透色谱(GPC)、动态热机械分析(DMA)和热重分析方法(TGA)研究了聚合产物的性能.结果表明,聚合物的数均分子量达4.22×104,聚合物有较高的玻璃化转变温度和良好的热稳定性,玻璃化转变温度达到131℃,热分解温度(Td5)达355℃.
The bulk polymerization of 1,3-bis (propargyloxy) benzene (BPOB) with 4,4’-diazidomethylbiphenyl (DAMBP) was investigated by 1HNMR. Structure was observed by Fourier transform infrared spectroscopy (FT-IR). The kinetics of polymerization was investigated by differential scanning calorimetry (DSC). Under the condition of lower temperature (80 ℃), binary The 1,3-dipolar cycloaddition reaction of azide with di-alkyne resulted in the formation of a triazole ring-containing polymer in the main chain. The kinetic parameters of reaction were obtained by Kissinger method and Crane method. The reaction order Was 0.92, the activation energy Ea was 79.8 kJ · mol-1, and the frequency factor A was 1.26 × 1010 min-1. By means of GPC, TMA and DMA, The results showed that the number average molecular weight of the polymer reached 4.22 × 104, the polymer had high glass transition temperature and good thermal stability, the glass transition temperature reached 131 ℃, the thermal decomposition temperature (Td5 ) Of 355 ° C.