The Flocculating Properties of Chitosan-graft-Polyacrylamide Flocculants (I)-Effect of the Grafting Ratio

被引：43

作者：

Yuan, Bo ^{[1
]}

Shang, Yabo ^{[2
]}

Lu, YaoBo ^{[1
]}

Qin, Zuqun ^{[2
]}

Jiang, Yuxiang ^{[2
]}

Chen, Aimin ^{[2
]}

Qian, Xiaozhi ^{[2
]}

Wang, Guangzhi ^{[2
]}

Yang, Hu ^{[1
]}

Cheng, Rongshi ^{[1
]}

机构：

[1] Nanjing Univ, Sch Chem & Chem Engn, Dept Polymer Sci & Technol, Key Lab Mesoscop Chem,MOE, Nanjing 210093, Peoples R China

[2] Zhenjiang Water Supply Co, Zhenjiang 212001, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2010年 / 117卷 / 04期

关键词：

chitosan-g-polyacrylamide copolymer flocculants; the grafting ratio; specific refractive index increment measurement; flocculating effects; COPOLYMERIZATION; DEACETYLATION; SOLVATION; POLYMERS; CHITIN;

D O I：

10.1002/app.32047

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A series of chitosan-graft-polyacrylamide copolymers have been prepared as flocculants for waste water treatment. The results indicated that the grafting ratio was one of the key factors for the flocculating effects. The copolymers with various grafting ratios showed different flocculating properties. To observe every detail of this effect, the specific refractive index increment measurement (SWIM) method was used to determine the grafting ratio at the beginning of this study. Interestingly, it was found that as the grafting ratio increased, the flocculating effect increased until it reached its maximum point. At that point, it decreased. This result was discussed in terms of the cooperative effects of the charge neutralization and bridging flocculating mechanisms. A structure model of chitosan-g-polyacrylamide copolymer flocculants has been proposed. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 1876-1882, 2010

引用

页码：1876 / 1882

页数：7

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