摘要
用紫外光谱法、粘度法、pH滴定法、量热法研究了介质pH对HPAM(部分水解聚丙烯酰胺)-SSMA(磺化苯乙烯—顺丁烯二酸酐共聚物钠盐)氢键络合物形成的影响。表明,在pH为5.0-9.0时,SSMA通过氢键与HPAM形成络合物,络合比(HPAM/SSMA)和络合稳定常数随pH的升高而减小;在pH为6.0时,络合为放热过程。在pH≥10的碱性介质中,不能形成络合物。在pH≤4.0时,形成氢键络合物的能力很微弱。
The effect of pH on the formation of interpolymer complex of HPAM (partially hydrolyzed polyaerylamide)-SSMA (sodium poly-(styrene sulfonate-maleie anhydride)) has been studied by the different methodsultraviolet spectroscopy, calorimetry, viscometry and potentiometry. In the pH range of 5.0-9.0, HPAM forms complex with SSMA by hydrogen bonds. The composition of the complex is changed with pH. The stability constants of the complex decrease with the increase in pH. At pH=6.0, the formation of the interpolymer complex is an exot'hermie process. In the alkaline modium (pH≥10.0), the interpolymer complex is not formed. In the acidic medium (pH≤4.0), the ability of forming complex by hydrogen bonds is weaker.
出处
《山东大学学报（自然科学版）》
CSCD
1989年第2期41-47,共7页
Journal of Shandong University(Natural Science Edition)
