MOLECULAR WEIGHT DETERMINATION OF COPOLYETHER AND MIXED POLYETHER
1H-NMR测定聚醚多元醇分子量——共聚醚和混聚醚分子量测定

The determination of number average molecular weight of copolyether and mixed polye-ther has been studied by use of 1H-NMR. It can be calculated by measuring the ratio of 1H-NMR absorptions of the relative protons in the polymeric structure to those of -COOCH2/2 and -COOCH ester-H. Agreement with end hydroxy chemical method was observed.