固体核磁共振法测定聚磷酸铵的平均聚合度  

Determination of average polymerization degree of APP by solid-state NMR spectroscopy

作　　者：邹志量[1] 胡伟[2] 马新刚[2] 蔡如琳[2] 黄志萍[2] 夏延致[1] 

机构地区：[1]青岛大学材料学院,青岛266071 [2]中国航天科技集团公司四院四十二所,襄阳441003

出　　处：《固体火箭技术》2012年第4期552-554,564,共4页Journal of Solid Rocket Technology

基　　金：国家973项目(613142)

摘　　要：采用固体核磁共振法测定了不同批次聚磷酸铵(简称APP)的平均聚合度,并与端基滴定法和液体核磁共振法进行了比较。结果表明,端基滴定法不适宜测定平均聚合度n>50的APP产品,液体核磁共振法的测定结果偏低,固体核磁共振法可以避免上述2种方法的局限,测定结果可信度较高,且实验精密度较好。The average polymerization degree of ammonium polyphosphate （APP） was determined by solidstate nuclear mag netic resonance （NMR）spectroscopy, endgroup titration and liquidstate NMR method, respectively. The results show that endgroup titration method is not suitable for APP with average polymerization degree more than 50 ;liquidstate NMR method has relatively low determination resuhs. However, the determination results of solidstate NMR method is more credible and accurate.

关 键 词：聚磷酸铵 聚合度 端基滴定法 液体核磁共振法 固体核磁共振法 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]