保水性聚丙烯酰胺增稠剂的合成及评价

Synthesis and Evaluation of Water Retentive PAM Thickener

以高相对分子质量聚丙烯酰胺(PAM)和自制的低相对分子质量PAM进行复配实验,制备了具有优异保水性能的增稠剂,并研究了组分对其保水性能的影响规律。实验结果表明:采用非离子型高相对分子质量PAM和低相对分子质量PAM复配,随低相对分子质量PAM中丙烯酸(AA)含量增加,保水性能逐渐提高,达到40%左右时保水效果最佳。且其最适宜使用pH值为8左右。

By combining high molecular weight PAM and home - made low molecular weight PAM, a kind of thickener with excellent water retention properties was prepared and effect of the composition on water retention property was studied. The results indicated that the water retention of the compound increased with the increase of acrylic acid （AA） content in low molecular weight PAM, which reached the best effect at 40% （w/w）. The results also revealed that the water retention is affected by pH value intensively, best at pH 8.