响应面法优化高吸水成纤共聚共混物的制备

Optimization synthesis of the copolymer blends for high absorbent fiber by response surface methodology

以丙烯酸(AA)、丙烯酰胺(AM)、聚乙烯醇(PVA)为原料,采用溶液聚合法制备了聚丙烯酸-丙烯酰胺/聚乙烯醇成纤共聚共混物。在单因素试验的基础上,采用响应面法就中和度、丙烯酰胺、引发剂3个因素对高吸水纤维吸水性能的影响进行分析。结果表明,高吸水成纤共聚共混物的最佳工艺条件为:丙烯酸中和度74.9%,丙烯酰胺质量为丙烯酸质量的24.7%,引发剂质量为丙烯酸和丙烯酰胺总质量的0.4%。在此条件下,高吸水纤维的吸水率实际值为227.8 g/g。

Using acrylic acid(AA),acrylamide(AM)and polyvinyl alcohol(PVA)as raw materials,P(AA-AM)/PVA copolymer blends for high absorbent fiber are synthesized by solution polymerization.Based on single factor tests,the influences of neutralization degree,AM and initiator on water absorbency of high absorbent fiber is analyzed by using response surface methodology.The results show that the optimum conditions are:the neutralization degree of AA 74.9%,AM 24.7%(accounts for the proportion of AA quality)and initiator 0.4%(accounts for the proportion of AA and AM quality).Under these conditions,the actual water absorbent ratio of the high absorbent fiber is 227.8 g/g.