植物栽培多彩吸水聚合物制备

采用丙烯酸、氢氧化钠、丙烯酰胺为原料,以N,N-亚甲基双丙烯基酰胺为交联剂,以过硫酸铵、无水亚硫酸钠为引发剂,选择颜色鲜艳又具有水不溶性的颜料为着色剂,采用溶液聚合法合成具有色彩晶莹、吸水不褪色的多彩吸水聚合物。并讨论了交联剂用量、单体浓度、引发剂用量等因素对产品吸水倍数的影响以及颜料的选择、水不溶性颜料的用量对产品着色、褪色的影响。结果表明,适宜的合成条件为:丙烯酸14.2 g,氢氧化钠17.2 g,蒸馏水43.8 g,丙烯酰胺26.6 g,N,N-亚甲基双丙烯基酰胺0.15 g,5%过硫酸溶液2 mL,5%无水亚硫酸钠溶液2 mL,颜料8 mL。

Preparation of Planting Colorful Absorbent Polymer

Colorful water absorbent polymer was prepared by using acrylic acid,sodium hydroxide and acrylamide as raw materials,N-methylene-bis-acrylamide as crosslinker,ammonium persulfate and anhydrous sodium hydrosulfite as initiator.The influence of dosage of crosslinker and initiator and concentration of monomer on the absorbency of the polymer were investigated.The results showed that the proper preparation conditions were that acrylic acid was 14.2 g,NaOH was 17.2 g,H2O was 43.8 g,acrylamide was 26.6 g,N-methylene-bis-acrylamida was 0.15 g,5 % ammonium persulfate was 2 mL,5 % anhydrous sodium hydrosulfite was 2 mL,pigment was 8 mL.