The emulsion of cationic polyacrylamide was prepared by a soap-free polymerization,using water as media,the oligomer that prepared by myself as emulsifier and stabilizer,(NH4)2S2O8 as initiator.The effect of the amoun...The emulsion of cationic polyacrylamide was prepared by a soap-free polymerization,using water as media,the oligomer that prepared by myself as emulsifier and stabilizer,(NH4)2S2O8 as initiator.The effect of the amount of isopropanol,oligomer and the ratio of DMC/AM on the molecular weight of cationic polyacrylamide were all studied.The best amount of isopropanol,oligomer are 25%,20% of the total monomer and the ratio of DMC/AM is 3/7.展开更多
为开发使用方便、性能优异的造纸增强剂,合成了8个水包水型阳离子聚丙烯酰胺乳液(CP),并对其合成条件进行了优化。在w(偶氮二异丙基脒盐)=0.042 4%,反应6 h,充N220 m in,聚合温度65℃,w(PCL-1)=5.5%,w(十二烷基硫醇)=0.2%的最优条件下,...为开发使用方便、性能优异的造纸增强剂,合成了8个水包水型阳离子聚丙烯酰胺乳液(CP),并对其合成条件进行了优化。在w(偶氮二异丙基脒盐)=0.042 4%,反应6 h,充N220 m in,聚合温度65℃,w(PCL-1)=5.5%,w(十二烷基硫醇)=0.2%的最优条件下,合成的CP乳液CP-2可使麦草浆纸页的抗张指数和撕裂指数与未加乳液时相比分别提高24.2%和23.7%。纸样扫描电镜分析表明,添加CP-2增强了浆料纤维间的相互作用。红外光谱分析表明,CP-2分子结构中含有丙烯酰胺和二甲基二烯丙基氯化铵链节。展开更多
文摘The emulsion of cationic polyacrylamide was prepared by a soap-free polymerization,using water as media,the oligomer that prepared by myself as emulsifier and stabilizer,(NH4)2S2O8 as initiator.The effect of the amount of isopropanol,oligomer and the ratio of DMC/AM on the molecular weight of cationic polyacrylamide were all studied.The best amount of isopropanol,oligomer are 25%,20% of the total monomer and the ratio of DMC/AM is 3/7.
文摘为开发使用方便、性能优异的造纸增强剂,合成了8个水包水型阳离子聚丙烯酰胺乳液(CP),并对其合成条件进行了优化。在w(偶氮二异丙基脒盐)=0.042 4%,反应6 h,充N220 m in,聚合温度65℃,w(PCL-1)=5.5%,w(十二烷基硫醇)=0.2%的最优条件下,合成的CP乳液CP-2可使麦草浆纸页的抗张指数和撕裂指数与未加乳液时相比分别提高24.2%和23.7%。纸样扫描电镜分析表明,添加CP-2增强了浆料纤维间的相互作用。红外光谱分析表明,CP-2分子结构中含有丙烯酰胺和二甲基二烯丙基氯化铵链节。
