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以成本较低的BCMO(3,3-双氯甲基氧丁环)为单体、BF3·THF(三氟化硼四氢呋喃络合物)为催化剂和BDO(1,4-丁二醇)为引发剂,合成了PBCMO(聚3,3-双氯甲基氧丁环);以溶度参数与PBCMO相近的DMAC(N,N-二甲基乙酰胺)为溶剂,对PBCMO进行叠氮化反应,采用间接法得到PBAMO(聚3,3-双叠氮甲基氧丁环)。研究结果表明:叠氮化反应的转化率随反应温度升高或时间延长而提高,叠氮取代率在120℃反应60 h后达到99%;产物的M_n(为5 897)与设计值接近;PBAMO的热稳定性较好,其T_g(玻璃化转变温度)为-38.25℃、热分解温度为255.1℃。
The low cost BCMO (3,3-bischloromethyloxetane) as monomer, BF3 · THF (boron trifluoride tetrahydrofuran complex) as catalyst and BDO (1,4-butanediol) as Initiator was used to synthesize PBCMO (poly 3,3-bischloromethyloxetane). PBCMO was azidated with DMAC (N, N-dimethylacetamide) with similar solubility parameters as PBCMO In the reaction, PBAMO (poly 3,3-bisazidomethyloxetane) was obtained by an indirect method. The results showed that the conversion rate of azidation increased with the increase of reaction temperature or time, and the substitution rate of azide reached 99% after reaction at 120 ℃ for 60 h. The M_n of product (5 897) was close to the designed value. PBAMO thermal stability is better, the T_g (glass transition temperature) -38.25 ℃, thermal decomposition temperature of 255.1 ℃.