三元共聚物的制备及对再生纸的增强作用

Preparation of Terpolymer and Its Strengthening to Recycled Paper

以2-丙烯酰胺基-2-甲基-1-丙烷磺酸(AMPS)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)和丙烯酰胺(AM)为单体,烷基酚聚氧乙烯醚-10(OP-10)、失水山梨醇单油酸酯(Span80)、失水山梨醇单月桂酸酯(Span20)等为乳化剂,环己烷为有机溶剂进行电导率和最大增溶水量试验。结果表明:选用环己烷与Span80/Tween80复合乳化剂组成的乳化体系乳液清澈透明稳定性较好;并确定最优条件:单体总质量浓度为40%、n(AM):n(DMC):n(AMPS)=7:1.5:1.5、亲水亲油平衡值(HLB值)为6.0、w(复合乳化剂)=12%和m(助乳化剂):m(复合乳化剂)=1:6。这样制得的反相微乳液乳化剂用量仅占整个油相用量的1/10左右,且稳定性好。将制得的三元共聚物与其他几种造纸增强剂同时应用于废纸浆中,并对抄得纸张的撕裂指数、耐破指数和抗张指数等强度指标进行测定。可以看出,自制的三元共聚物对以废纸浆为原材料纸张的纤维强度有理想的增强效果。

Using AM, DMC and AMPS as emulsification monomers, OP-10, Span 80, Span 20, Tween 80 and Tween 60 as emulsifiers, n-butyl alcohol as auxiliary emulsifier, cyclohexane as organic solvents, the solubilization capacity of aqueous phase and conductivity of the system were studied. ]-he results showed that when cycle-hexane is the most effective oil phase and Span 80/Tween 80 is the best emulsifying system, the system turn to be clear and stable. The optimal effect can be achieved when total mass concentration of monomer is 40%, molar ratio of AM：DMC：AMPS is 7：1.5：1.5, the HLB value is 6, mass fraction of composite emulsifier is 12% and mass ratio of auxiliary emulsifier to composite emulsifier is 1：6. The emulsifier takes up only 10% of the oil phase in the inverse micro-emulsion synthesized. Added the terpolymer synthesized and some other paper strengthening agents into recycled pulp, measured the tear index, burst index and tensile index of the paper. The results showed that the self-made terpolymer can be used as the paper strengthening agents which shows its good enhancement effect to the paper in experiment.