Surface tension of concentrated solutions of poly-m-phenyleneisophthalamide in dimethylacetamide
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A stable value of the surface tension, σ, of concentrated solutions of PPIP in DMAc is established over the course of several days after completion of the synthesis.
Heating leads to a marked increase in σ, which then relaxes to a steady value over a period of several days.
The value of σ also depends on the ratio of the components in the neutralizing mixture, diethylamine plus DMAc.
KeywordsPolymer Surface Tension Concentrate Solution DMAc Diethylamine
- 1.V. I. Klenin et al., in: Gel-formation Processes in Polymeric Systems [in Russian], Izd. Saratovsk. Gos. Univ. (1976), pp. 64–80.Google Scholar
- 2.D. A. Fridrikhsberg, A Course in Colloid Chemistry [in Russian], Khimiya, Moscow (1974).Google Scholar
- 3.T. Nose and T. V. Tan, J. Polym. Sci., 14, No. 12, 705–712 (1976).Google Scholar
- 4.A. A. Panfilova et al., Khim. Volokna, No. 3, 10–13 (1975).Google Scholar
- 5.R. K. Garipova et al., Khim. Volokna, No. 5, 33–34 (1976).Google Scholar
- 6.P. P. Pugachevich, É. M. Beglyarov, and I. A. Lavychin, Surface Phenomena in Polymers [in Russian], Khimiya, Moscow (1982).Google Scholar
- 7.S. V. Gorbachev (editor) Applied Physical Chemistry [in Russian], Vysshaya Shkola, Moscow (1974).Google Scholar