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系列的高分子量水溶性丙烯酰胺 /丙烯酸 /2 丙烯酰胺 2 甲基丙磺酸 (AM/AA/AMPS)三元共聚物(P3A)由相应的 (AM/AMPS)二元共聚物通过部分水解方法制得 .聚合物的结构和组成使用电位滴定和13 C NMR谱测定 ,得到的结果指出 ,在设定的试验条件下 ,水解过程中 ,高分子链上AMPS单元具有充分的稳定性 ,而丙烯酰胺基平稳地转变为丙烯酸 .在所有不同聚合物 (P2A)情况下 ,由于阴离子基团和OH-离子的静电相斥作用 ,酰胺基的水解反应均遵循自动减缓动力学的模式 ,同时 ,最后反应转化率趋向极限 ,AM剩余值位于 3 0mol%左右 ,另外对各种三元共聚物 (P3A)的溶液特性粘数和组成的关系亦作了详细的研究 .
Series of high molecular weight water-soluble acrylamide / acrylic acid / 2 acrylamide 2 methylpropanesulfonic acid (AM / AA / AMPS) terpolymer (P3A) was prepared from the corresponding (AM / AMPS) The structure and composition of the polymers were determined by potentiometric titration and 13 C NMR spectroscopy. The results show that the AMPS units on the polymer chains have sufficient stability under the set experimental conditions, while the propylene The amide group was smoothly converted to acrylic acid.According to the electrostatic repulsion of the anionic groups and OH- ions in all the different polymers (P2A), the hydrolysis of the amide groups followed the mode of auto-slowing kinetics and the last The reaction conversion rate tended to the limit, and the residual AM value was about 30 mol%. In addition, the relationship between intrinsic viscosities and composition of various terpolymers (P3A) was also studied in detail.