正交实验优化PAM水凝胶聚合工艺

Study on Preparation of PAM with Orthogonal Experiment Design

以丙烯酰胺(AM)为单体,过硫酸铵(APS)为引发剂,N-N'-亚甲基双丙烯酰胺(MBA)为交联剂,去离子水为溶剂,采用水溶液聚合法制备了聚丙烯酰胺水凝胶,以转化率和饱和溶胀率为指标,用正交实验的方法确定最佳制备条件为:单体AM质量浓度为10%;MBA为单体的0.75%;APS为单体的1.25%;聚合温度(T):55℃。

The polyacrylamide （PAM） hydrogels were synthesized by solution polymerization method PAM with acrylamide （AM） as monomer, ammonium persulfate （APS） as initiator, N -N＇-methylene bisacrylamide （MBA） as crosslinker, and water as solvent. The optimized preparation condition based on orthogonal experiment was ob- tained： AM was 10% of the total solution; MBA was 0.75% of the total AM; APS was 1.25% of the total AM; the polymerization temperature was 55℃, in which the best combination of yield and equilibrium swelling ratio was car- ried out.