Influence of polyethylenimine on the precipitation process of lead sulfate crystals
2003; Elsevier BV; Volume: 260; Issue: 3-4 Linguagem: Inglês
10.1016/j.jcrysgro.2003.08.039
ISSN1873-5002
AutoresAkio Katayama, T. Sakuma, Izumi Hirasawa,
Tópico(s)Dyeing and Modifying Textile Fibers
ResumoCrystals of lead sulfate were precipitated in a solution of polyethylenimine (PEI) using a double-jet crystallizer. PEI controlled both the nucleation rate and the growth rate, and enabled to produce fine monodispersed crystals. This effect is considered to be due to a complexation between PEI and lead ion. The on-line measurement of the variation in the lead ion concentration indicated PEI lost its effect when a certain amount of reactants was supplied. And the duration in which PEI could control the precipitation rate and the amount of PEI had a strong correlation. In addition, it was suggested that their relationship could be utilized in order to produce monodispersed particles.
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