Citation:
Dong Lisong, Zheng Guodong, Feng Zhiliu. AN INVESTIGATION ON THE TRANSITIONS OF OLIGO-POLYSULFONES BY DSC[J]. Chinese Journal of Applied Chemistry,
;1987, 4(1): 53-56.
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The transitions of bisphenol A and phenolphthalein oligo-polysulfones were investigated by DSC. It is found that for both the oligomers, after proper heat-treatment, two more transitions, lower and higher than their Tg,appeared on their DSC curves. It might be reasonable to suggest that these two transitions be due to the disordering of loc 1 short and long range order of molecular arrangements respectively. Equations for linear relationship between Tg and Mn for both the oligomers are given in the paper.
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