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| 阳离子聚丙烯酰胺乳液对木浆增强作用的研究 | |
| 引用本文： | 李建文,邱化玉,詹怀宇.阳离子聚丙烯酰胺乳液对木浆增强作用的研究[J].林产化学与工业,2006,26(1):79-82. |
| 作者姓名： | 李建文 邱化玉 詹怀宇 |
| 作者单位： | 1. 华南理工大学,资源科学与造纸工程学院,制浆造纸工程国家重点实验室,广东,广州,510640;山东轻工业学院轻化工程与环境学院,山东,济南,250100 2. 山东轻工业学院轻化工程与环境学院,山东,济南,250100 3. 华南理工大学,资源科学与造纸工程学院,制浆造纸工程国家重点实验室,广东,广州,510640 |
| 摘 要： | 以丙烯酰胺和二甲基二烯丙基氯化铵(DDAC)为主单体通过自由基共聚反应合成了水包水型阳离子聚丙烯酰胺(CPAA)乳液增强剂,并探讨了在漂白木浆中的应用条件如CPAA乳液用量、反应时间、硫酸铝用量、浆料pH值、搅拌速度对其增强效果的影响。结果表明,当CPAA乳液用量为0.8%(对绝干浆)、pH值7.0、反应时间10 m in、硫酸铝用量为0.5%(对绝干浆)、搅拌速度150 r/m in时,纸页裂断长和撕裂指数与未加助剂时相比依次增加28.7%和12.4%。红外光谱分析表明,合成的CPAA乳液具有预期设计结构。分析添加乳液前后纸页的环境扫描电镜照片对CPAA乳液的增强机理作了初步探讨。 |
| 关 键 词： | 阳离子聚丙烯酰胺乳液 增强剂 木浆 环境扫描电镜 |
| 文章编号： | 0253-2417（2006）01-0079-04 |
| 收稿时间： | 10 18 2004 12:00AM |
| 修稿时间： | 2004-10-18 |
Research on Strengthening Effect of Cationic Polyacrylamide Emulsion toward Wood Pulp |
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| LI Jian-wen,QIU Hua-yu,ZHAN Huai-yu.Research on Strengthening Effect of Cationic Polyacrylamide Emulsion toward Wood Pulp[J].Chemistry & Industry of Forest Products,2006,26(1):79-82. | |
| Authors: | LI Jian-wen QIU Hua-yu ZHAN Huai-yu |
| Institution: | 1. State Key Lab of Paper and Pulp Engineering, South China University of Technology, Guangzhou 510640, China; 2. School of Light Chemistry and Environment Engineering, Shandong Institute of Light Industry, Jinan 250100, China |
| Abstract: | Water-in-water type cationic polyacrylamide(CPAA) emulsion was synthesized through free-radical copolymerization of acrylamide and dimethyl diallyammonium chloride(DDAC).The impacts of application conditions,such as dosage of CPAA(emulsion,) reaction time,amount of aluminum sulfate,pH value of wood pulp and stirring speed on its reinforcing effect toward bleached wood-pulp were explored.As a result,compared to paper characteristics without CPAA emulsion,breaking length and tearing index of paper sheets of wood pulp were increased respectively by 28.7% and 12.4% at charge of CPAA emulsion 0.8 %(on oven dry pulp),reaction time 10 min,pH value 7.0,dosage of aluminum sulfate 0.5 %(on oven dry pulp) and stirring speed 150 r/min.The expected molecular structure of CPAA made in our lab was identified from its infrared spectrum.Its(reinforcing) mechanism toward bleached wood pulp was also explored elementarily by comparing photographs from environmental scanning(electron) microscopy(ESEM) between paper sheets with and without CPAA emulsion treatments. |
| Keywords: | cationic polyacrylamide emulsion strengthening agent wood pulp ESEM |
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