Acid-base properties of fibrous polyampholytes with aminodiacetic functional groups

E. Kosandrovich, P. V. Nesteronok, L. N. Shachenkova, V. Soldatov
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Abstract

Polyampholytes, containing aminodiacetic functional groups, on the base of polyacrylonitrile fiber Nitron C were obtained by the amination reaction of nitrile groups with polyamines (number of repeating units from 1 to 5) and subsequent alkylation with monochloroacetic acid. The experimental results of potentiometric titration and sorption of supporting electrolyte (kCl) ions by synthesized ion exchangers were obtained, which made it possible to determine the acidity parameters of functional groups: the presence of four types of cation exchange and two types of anion exchange groups was detected in polyampholytes, the sequence of their neutralization in the titration process was established.
含氨基二乙酸官能团纤维性多两性电解质的酸碱性质
以聚丙烯腈纤维为基料,通过腈基与多胺(重复单元数为1 ~ 5)的胺化反应,再与一氯乙酸烷基化,制得含氨基二乙酸官能团的聚两性聚合物。通过合成的离子交换剂对辅助电解质(kCl)离子进行电位滴定和吸附的实验结果,使官能团的酸度参数的测定成为可能:在多两性电解质中检测到4种阳离子交换基团和2种阴离子交换基团的存在,建立了它们在滴定过程中的中和顺序。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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