JIANG Chun-gang, SHENG Long-sheng, AN Deng-kui. STUDY ON THE AVERAGE MOLECULAR WEIGHT AND THE DISTRIBUTION OF POLYETHERS BY MEANS OF LD/FTMS. [J]. Acta Polymerica Sinica (6):747-758(1990)
DOI:
JIANG Chun-gang, SHENG Long-sheng, AN Deng-kui. STUDY ON THE AVERAGE MOLECULAR WEIGHT AND THE DISTRIBUTION OF POLYETHERS BY MEANS OF LD/FTMS. [J]. Acta Polymerica Sinica (6):747-758(1990)DOI:
STUDY ON THE AVERAGE MOLECULAR WEIGHT AND THE DISTRIBUTION OF POLYETHERS BY MEANS OF LD/FTMS
Laser Desorption/Fourier Transform Mass Spectrometry (LD/FTMS) is a new effective method for determination of the average molecular weight and the distribution of oligomers (MW = 1000-10000). By using this technology
we have studied a series of homopolyethers and copolyethers and have got distributional figures of dominant pseudomolecular ions attached K+. The number-average molecular weights obtained by self-compiling program dealing with data of the figures are in good agreement with that of VPO
GPC
NMR
etc. We have dis-cussed the problems that alkalimetal salts in sampling and some experimental parameters have influenced on the results obtained.