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Direct access to poly(glycidyl azide) and its copolymers through anionic (co-)polymerization of glycidyl azide
Nature Communications ( IF 14.7 ) Pub Date : 2019-01-17 , DOI: 10.1038/s41467-018-08251-1 Senthil K. Boopathi , Nikos Hadjichristidis , Yves Gnanou , Xiaoshuang Feng
Nature Communications ( IF 14.7 ) Pub Date : 2019-01-17 , DOI: 10.1038/s41467-018-08251-1 Senthil K. Boopathi , Nikos Hadjichristidis , Yves Gnanou , Xiaoshuang Feng
Glycidyl azide polymer or poly(glycidyl azide) which is considered as an excellent energetic binder or plasticizer in advanced solid propellants is generally obtained by post-modification or azidation of poly(epichlorohydrin). Here we report that glycidyl azide can be directly homopolymerized through anionic ring-opening polymerization to access poly(glycidyl azide) using onium salts as initiator and triethyl borane as activator. Molar masses of poly(glycidyl azide) up to 11.0 Kg/mol are achieved in a controlled manner with a narrow polydispersity index (PDI ≤ 1.2). Similarly, alternating poly(glycidyl azide carbonate) are also prepared through alternating copolymerization of glycidyl azide with carbon dioxide. Lastly, the copolymerization of glycidyl azide with other epoxide monomers is carried out; the azido functions carried by glycidyl azide which are successfully incorporated into the backbones of polyethers and polycarbonates based on cyclohexene oxide and propylene oxide subsequently served to introduce other functions by click chemistry.
中文翻译:
通过缩水甘油基叠氮化物的阴离子(共)聚合反应直接获得聚(缩水甘油基叠氮化物)及其共聚物
在高级固体推进剂中被认为是极好的能量粘合剂或增塑剂的缩水甘油基叠氮化物聚合物或聚(缩水甘油基叠氮化物)通常是通过聚(表氯醇)的后改性或叠氮化而获得的。在这里我们报道缩水甘油基叠氮化物可以通过阴离子开环聚合直接均聚以使用鎓盐作为引发剂和三乙基硼烷作为活化剂来访问聚(缩水甘油基叠氮化物)。以可控制的方式实现高达11.0 Kg / mol的聚(缩水甘油叠氮化物)的摩尔质量,窄的多分散指数(PDI≤1.2)。类似地,也可以通过缩水甘油基叠氮化物与二氧化碳的交替共聚来制备交替的聚(缩水甘油基叠氮化物碳酸酯)。最后,进行缩水甘油基叠氮化物与其他环氧化物单体的共聚。
更新日期:2019-01-17
中文翻译:
通过缩水甘油基叠氮化物的阴离子(共)聚合反应直接获得聚(缩水甘油基叠氮化物)及其共聚物
在高级固体推进剂中被认为是极好的能量粘合剂或增塑剂的缩水甘油基叠氮化物聚合物或聚(缩水甘油基叠氮化物)通常是通过聚(表氯醇)的后改性或叠氮化而获得的。在这里我们报道缩水甘油基叠氮化物可以通过阴离子开环聚合直接均聚以使用鎓盐作为引发剂和三乙基硼烷作为活化剂来访问聚(缩水甘油基叠氮化物)。以可控制的方式实现高达11.0 Kg / mol的聚(缩水甘油叠氮化物)的摩尔质量,窄的多分散指数(PDI≤1.2)。类似地,也可以通过缩水甘油基叠氮化物与二氧化碳的交替共聚来制备交替的聚(缩水甘油基叠氮化物碳酸酯)。最后,进行缩水甘油基叠氮化物与其他环氧化物单体的共聚。