不同相对分子质量的APAM的制备及其动力黏度性质研究  

The preparation and dynamic viscosity properties of APAM with different relative molecular mass

作　　者：林继辉[1] 王春萍[2] 姚小梅[2] 吴阳[2] 

机构地区：[1]福建师范大学闽南科技学院,福建南安362332 [2]福建师范大学化学与材料学院,福建福州35007

出　　处：《云南民族大学学报（自然科学版）》2013年第2期93-98,共6页Journal of Yunnan Minzu University:Natural Sciences Edition

摘　　要：以丙烯酰胺(AM)为原料合成了不同相对分子质量的聚丙烯酰胺(PAM).通过碱性水解反应制备了阴离子聚丙烯酰胺(APAM).采用胶体滴定法测定了APAM的水解度,考察了碱的用量、聚合物的相对分子质量对水解度的影响.探讨了温度、pH值、相对分子质量和水解度等因素对APAM动力黏度的影响,并根据实验结果进行了应用实验.研究结果表明:当酰胺基与碱的比例在1∶3时聚合物水解度达到60%,增加碱的用量,其最终水解度保持不变;水解度60%的APAM在温度为25℃、pH=8～10、相对分子质量172×104时的动力黏度达到13 400 mPa·s,将它应用于涂料中,其黏度从57 mPa·s上升至299.5 mPa·s.Different polyaerylamides（PAM） with relative molecular mass were synthesized from acrylamide （AM）. Anionic polyacrylamide （APAM） was prepared by alkali hydrolysis. The hydrolysis degrees of polymers were deter- mined by colloid titration. The effects of the amount of alkali and the relative molecular mass of polymer on the hy- drolysis level were investigated, and the influence of some factors such as temperature, pH value, relative molecu- lar mass of polymer and the hydrolysis degree on the dynamic viscosity were discussed. The results are as follows ： when amide： alkali = 1 ： 3, the hydrolysis degree of polymer reaches 60% ; while increasing the amount of alkali, it remains unchanged; the dynamic viscosity reaches 13 400 mPa·s at 25℃, pH = 8 - 10 and 172 million of rela- tive molecular mass. While applied to the APAM in coating, it has a good effect and its dynamic viscosity rises from 57 mPa·s to 299.5 mPa·s.

关 键 词：聚丙烯酰胺 增稠剂 胶体滴定 动力黏度 

分 类 号：O633.22[理学—高分子化学]