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| Synthesis of Lightly Cross-linked Amphoteric Polyacrylamide and Its Application as Paper Strengthening Agent |
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| DOI：10.11981/j.issn.1000-6842.2016.02.7 |
| Key Words:amphoteric polyacrylamide； lightly cross-linked； paper strengthening agent |
| Fund Project:制浆造纸国家工程实验室博士基金项目。 |
| Author Name | Affiliation | | 毛 萃1,2 | 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室,北京,100102 | | 万 莹1,2 | 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室,北京,100102 | | 孟凡锦1,2 | 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室,北京,100102 | | 刘群华1,2 | 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室,北京,100102 | | 刘 文1,2 | 1.中国制浆造纸研究院,北京,100102；2.制浆造纸国家工程实验室,北京,100102 |
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| Abstract: |
| Lightly cross-linked amphoteric polyacrylamide (AmPAM) was synthesized by the aqueous solution copolymerization method using acrylamide (AM), 2-methacryloxyethyl trimethyl ammonium chloride (DMC) and acrylic acid (AA) as monomers, N-methylolacrylamide (NMA) as molecular structure modification additive. The strengthening effect of AmPAM was also studied.The results showed that the optimal polymerization conditions were: n(AM)∶n(DMC)∶n(AA)=8.0∶1.5∶0.5, the mass fraction of monomer was 20%, the dosage of initiator was 0.4%, the reaction temperature was 80℃, the reaction time was 5 h, the dosage of NMA was 3% respectively. Meanwhile, the strengthening effect of the lab-made AmPAM applied in paper was better than that of the commercial linear AmPAM products with the same addition. |
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