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Properties of Polyphosphoric Acid
被引：8
作者：
V. A. Platonov
机构：
[1] All-Russian Scientific-Research Institute of Polymer Fibers,
关键词：
Polymer;
Viscosity;
Anhydride;
Sufficient Time;
Hydrolytic Degradation;
D O I：
10.1023/A:1004199406779
中图分类号：
学科分类号：
摘要：
The temperature—viscosity curves were obtained for polyphosphoric acid with a phosphoric anhydride content of 72 to 90.75%. It was found that the composition of PPA remains constant for an industrially sufficient time. The molecular-weight distribution of PPA with a different phosphoric anhydride content was determined with the published data and a scheme of the mechanism of hydrolytic degradation of PPA was proposed.
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页码：325 / 329
页数：4
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