weight distribution of the produced polymer products were determined by gel permeation chromatography (GPC). It was found that the M n ¯ of poly(norbornene-(N-methyl)-phthalimide) was controllable and exhibited a narrow polydispersity index (PDI) (~1.10). The synthesis condition of 5-norbornene-2-(N-methyl)-phthalimide was optimized by determining the yields at different reaction temperatures and reaction
由于其具有“活性”聚合和催化剂快速发展的特性,ROMP是一种制备功能聚合物的有效方法。在本工作中,通过ROMP反应合成了
壳聚糖的模拟物聚
降冰片烯甲胺。
氨基保护产物5-
降冰片烯-2-(N-甲基)-邻苯二甲
酰亚胺是通过
5-降冰片烯-2-甲胺与
邻苯二甲酸酐的反应制备的,然后在Hoveyda存在下进行ROMP反应-Grubbs第二催化剂,得到聚(
降冰片烯-(N-甲基)-邻苯二甲
酰亚胺)。通过聚(
降冰片烯-(N-甲基)-邻苯二甲
酰亚胺)的脱保护反应获得目标产物聚(
降冰片烯-
甲胺)。每个步骤中的产物均通过FTIR和1 H-NMR表征,并通过TG分析确定其热稳定性。用凝胶渗透色谱法(
GPC)测定单体([M] / [I])与催化剂之间的摩尔比对制得的聚合物产物的平均相对分子量(M n)和分子量分布的影响。发现聚(
降冰片烯-(N-甲基)-邻苯二甲
酰亚胺)的Mn是可控制的,并且表现出窄的多分散指数(PDI)(〜1