溶液聚合法制备高岭土复合高吸水性树脂的研究

Study on the Synthesis of Kaoline Composited Superabsorbent Polymers by Solution Polymerization

以N,N-亚甲基双丙烯酰胺为交联剂,过硫酸钾为引发剂,采用水溶液聚合法制得高岭土复合聚丙烯酸钠-丙烯酰胺高吸水性树脂.最佳工艺条件:高岭土10%、单体配比(AA:AM)55:45、交联剂0.1%、引发剂0.2%、中和度80%、反应温度70℃.在此条件下合成的树脂在室温下吸蒸馏水和0.9%(wt%)NaCl溶液分别为350 g/g和63 g/g.红外光谱初步表明聚丙烯酸与高岭土产生了交联.

Poly sodium acrylate-acrylamide based on superabsorbent polymers is synthesized by solution polymerization us- ing N, N - methylenebisacrylamide as crosslinking agent and potassium persulphate as initiator. Influence of Kaoline, crosslinking agent, initiator, monomer, neutralization on the water and salt absorbance is further discussed.