紫外光引发合成阴离子聚丙烯酰胺及其表征

选择了三种单体：丙烯酰胺(AM)、2-丙烯酰胺基-2-甲基丙磺酸(AMPS)和丙烯酸(AA)，在复合引发剂的作用下，紫外光照射共聚得到阴离子聚丙烯酰胺(APAM)。研究了单体配比、单体总质量分数以及引发剂浓度等因素对聚合反应的影响，以产物特性粘度为目标进行了制备条件的优化，并对聚合产物的紫外、红外、电镜等结构和热性能进行表征。结果表明，在单体配比为70∶10∶10、单体质量分数为40%、引发剂浓度0.20%、反应体系pH值为9.0以及光照60 min条件下，能够制得特性粘度为1.6×103 mL·g-1的阴离子聚丙烯酰胺。

Ultraviolet-Initiated Synthesis and Characterization of Anionic Polyacrylamide

APAM was prepared under the action of composite initiator and UV irradiation, using acryl amide (AM), 2-acrylamido-2- methyl propane sulfonic acid (AMPS) and acrylic acid(AA) as raw materials. The paper studied the effect of proportion between monomers, monomer ratio, initiator concentration and other factors on intrinsic viscosity of the polymer, and optimized preparation conditions. The chemical structure and thermal stability of APAM were characterized by UV, FTIR, SEM and DTA-TGA respectively. The results showed that the APAM with the intrinsic viscosity 1.6×103 mL·g-1 can prepared when the proportion between monomers was 70∶10∶10, the monomer ratio was 40%, initiator concentration was 0.20%, pH was 9 and the illu mination time was 60 min.