AQUEOUS POLYMERIZATION OF ACRYLAMIDE INITIATED BY CERIUM(IV) AMINO-ACID CHELATING AGENT REDOX INITIATORS

被引:22
作者
HSU, WC
KUO, JF
CHEN, CY
机构
[1] Department of Chemical Engineering, Cheng Kung University, Tainan
关键词
AMINO ACID TYPE CHELATING AGENTS; CE(IV) REDOX INITIATORS; AQUEOUS POLYMERIZATION OF ACRYLAMIDE; KINETICS AND PARAMETERS; STRUCTURE CORRELATIONS;
D O I
10.1002/pola.1993.080310131
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Amino acid-type chelating agents such as nitrilotriacetic acid (NTA), nitrilotripropionic acid (NPA), iminodiacetic acid (IDA), and ethylenediamine tetraacetic acid (EDTA) were used in combination with cerium(IV) ammonium nitrate [Ce(IV)] as the redox initiators for the aqueous polymerizations of acrylamide (AM). The polymerization behaviors and polymer qualities were studied as functions of the concentrations of Ce(IV), chelating agent, AM, as well as temperature. The performances of the chelating agent redox systems varied with the natures of the chelating agents. The NTA-Ce(IV) initiator showed the most promising polymerization rate and conversion. The blank tests for the reactions of cerium and chelating agents were also conducted for finding mechanism of formation of free radicals and determining their complex formation constants (K) and disproportionation constants (k(d)). The mechanism for the polymerization was proposed and the kinetic parameters were evaluated.
引用
收藏
页码:267 / 274
页数:8
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