以丙烯酰氧基Span-60反相乳液合成聚丙烯酸钠

Synthesis of Polyacrylate Sodium by Reverse Latex of Acryloyl Span-60

以丙烯酰氧基Span -60为乳化剂,采用反相乳液合成高分子聚丙烯酸钠尚未见有文献报道。本文研究了乳化剂和反应温度对聚合体系稳定性的影响;(NH4 ) 2 S2 O8—DMAEMA—NaHSO3引发剂和烯丙醇对产品性能的影响.结果表明,最佳的实验条件:反应温度为40℃;乳化剂用量为3 % ;引发剂浓度分别为0 .0 6%、0 . 0 4%、0. 0 2 % ;烯丙醇为0 . 0 8% ;反应温度为40℃.在最佳实验条件下,合成聚合物分子量超过3×10 7,且溶解性能优于溶液聚合所得产品.

It is not reported that the synthesis of polyacrylate sodium by reverse latex with acryloyl Span-60 as emulsifying agent. The effect of emulsifying agent and reaction temperature on the stability of the polymeric system was investigated. The effect of (NH 4) 2S 2O 8-DMAEMA-NaHSO 3 initiator and allyl alcohol on the performance of the products was also investigated. It is shown that the optimal experimental conditions are reaction temperature, 40℃; emulsifying agent use level, 3%; initiator concentration, 0.06%, 0.04%, 0.02%; allyl alcohol use level, 0.08%, respectively. The molecular weight of the synthesized product at the optimal experimental conditions is greater than 3×10 7. The solubility of the product is better than that synthesized by conventional solution polymerization.