【作者】 林媚；

【导师】 陈少平；

【作者基本信息】 福建师范大学 ， 高分子化学与物理， 2004， 硕士

【摘要】 为了开发高效低成本的高分子絮凝剂，进行了淀粉与阳离子型聚N-乙烯基甲酰胺复合物(简记为淀粉／CPNVF复合物)的制备及其在造纸工业中的应用研究。在本研究中首先探讨了PNVF的水解反应规律，产物的结构特征以及淀粉／CPNVF复合物的电荷性质。论文第三章针对废纸脱墨废水的浊度、色度指标较高，难处理问题，将不同配比的复合物应用于废纸脱墨废水的处理中。发现淀粉／CPNVF复合物具有优良的絮凝性能，甚至某些配比的淀粉／CPNVF复合物的絮凝性能比CPNVF的更加显著。找出了影响复合物絮凝效果的因素，并初步探讨了淀粉／CPNVF复合物絮凝作用的机理。论文第四章报告了复合物在芦苇浆上的助留、助滤效果。实验结果表明：淀粉／CPNVF复合物对芦苇浆具有显著的助留、助滤作用。最佳添加量时，纤维留着率可提高10％以上、滤水时间可缩短93％。并且CPNVF的存在可提高淀粉在芦苇浆上的吸附，从而进一步降低纸成本。本研元中使用的淀粉为价格低廉、无毒的天然高分子，与CPNVF形成的复合物有望开发成为高效低成本的高分子絮凝剂。更多还原

【Abstract】 To develop an effective and low-cost polymeric flocculant, the preparation of the compounds of oxidized starch and cationic polyvinylformaide(the compounds of starch/CPNVF) and their application in the papermaking industry were studied. In this paper, the regularity of the hydrolysis reaction, the structure of the hydrolysate and the charge property of the compounds were studied firstly. In chapter 3, those compounds were used to deal with the deinking wastewater which is difficult to treat with for its high colourity and turbidity. It was found that the compounds have good flocculation property. Some of them are even better than CPNVF. At the same time, both the main factors influencing the flocculating effect and the flocculation mechanism of the compounds were studied. In charter 4, the effect of the compounds on drainage and retention of pulp were investigated. The results show that at the optimum condition, they can improve the retention of reed pulp over 10%, and the drainage time can be shortened by 93%. Furthermore, starch can be absorbed more in the existence of CPNVF, so that it can lower the cost of the paper. The compounds is expected to develop into an effective and low-cost flocculant for the starch which was used in this paper is a low-price and nontoxic polymer.更多还原