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| Preparation of Starch Grafting Dicyandiamide Formaldehyde Condensated Polymer and the Study of Its Synthesis Mechanism |
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| DOI：10.11981/j.issn.1000-6842.2014.03.15 |
| Key Words:dicyandiamide formaldehyde condensated polymer; starch; flocculant; grafting copolymerization |
| Fund Project:青岛市科技发展计划(12 1 4 3 (28) jch)；江苏省制浆造纸科学与技术重点实验室开放基金(201306)；制浆造纸工程国家重点实验室(华南理工大学)开放基金(201474)。 |
| Author Name | Affiliation | | 张 恒1,2,3 | 1.青岛科技大学化工学院,山东青岛,266042；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037；3.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 | | 王晓平1 | 1.青岛科技大学化工学院,山东青岛,266042 | | 胡振华1 | 1.青岛科技大学化工学院,山东青岛,266042 | | 张岩冲3 | 3.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 | | 王传路1 | 1.青岛科技大学化工学院,山东青岛,266042 |
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| Abstract: |
| Cationic grafting starch is a kind of efficient, environmentally friendly, stable and affordable flocculants, but it is relatively hard to prepare and the available types of vinyl monomer are less. A kind of flocculant made of starch grafting dicyandiamide formaldehyde condensated copolymer was designed and prepared, and the molecular structure and the characteristic group of the new flocculant were confirmed by infrared spectrogram and reaction mechanism analysis. The optimal dosage of this flocculant for disposing waste water of 2 g/L Ure pigment red E B dye and papermaking waste water after biochemical treating was 7.5%, and the decolouring rate and the removal rate of COD were 98.3% and 83.0%, respectively. |
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