| Autor: |
Ushio, Hidetoshi, Nishimura, Hitoshi, Tsuji, Yoshikuni, Sano, Takayuki, Yasunaga, Tatsuya |
| Zdroj: |
Polymer Journal; September 1977, Vol. 9 Issue: 5 p489-497, 9p |
| Abstrakt: |
Kinetic studies have been carried out on the cooperative binding of toluidine blue to poly(acrylic acid) by the electric-field pulse method in order to compare the binding property with that for poly(a-L-glutamic acid). Based on the results of our experiments in the coupling of the aggregation process of the dye to the nucleation process, we were able to arrive at a mechanism which we introduce in this paper. The association rate constant of the dye aggregation process was found to be about one order of magnitude smaller than that for the poly(a-L-grutamic acid). The reason for this is the difference in the polymer structures following hydration. Also the effect of the degree of ionization of a polymer on the various properties of the binding of a dye was also examined. It was found consequently that the bound dyes became more stable and compact with an increase in the degree of ionization. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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