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jiangwf1

银虫 (小有名气)

[交流] 【求助】PSS在什么pH范围内带负电

请问各位虫友,谁知道聚苯乙烯磺酸钠(PSS)在什么pH范围内带负电?请各位指点!由于这关于我的实验,请不要猜测,谢谢!
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youngtsingb

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jiangwf1(金币+7,VIP+0):谢谢啊!!我还要仔细研究一下,呵呵~~ 8-7 16:18
poly(sodium styrene sulfonate)称为quenched Polyelectrolyte或者“strong”polyelectrolyte。在所有pH值范围内都是带负电的。无论是实验和理论模拟都证实了这一点。相关文献证据如下:
Strong polyelectrolytes, for example, poly(sodium styrene sulfonate), completely dissociate in the total pH range accessible by experiment.
(Uyaver, S.; Seidel, C. Macromolecules 2009, 42, (4), 1352-1361.)

When the dissociation does not depend on the pH, the polyelectrolyte is called “strong”polyelectrolyte.
(Gromer, A.; Rawiso, M.; Maaloum, M. Langmuir 2008, 24, 8950-8953.)

With respect to different dissociation behaviors, one can distinguish between strong and weak PELs, a classification widely used in the chemistry community or between quenched and annealed PELs, the common classification in the physics community. Strong polyelectrolytes, poly-salts as, e.g., Na-PSS, dissociate completely in the total pH range accessible by experiment.
(Uyaver, S.; Seidel, C. J. Phys. Chem. B 2004, 108, (49), 18804-18814.)
2楼2009-08-05 13:24:13
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jiangwf1

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没有人有不同意见?那我给金币了哦!
3楼2009-08-07 11:34:23
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