Pickering乳液型聚丙烯酸酯硬挺整理剂的合成及应用

Synthesis and application of Pickering emulsion polyacrylate stiffening agent

以纳米SiO2为稳定剂、甲基丙烯酸甲酯(MMA)为硬单体、丙烯酸丁酯(BA)为软单体、双丙酮丙烯酰胺(DAAM)为交联单体、丙烯酸(AA)为功能单体、过硫酸铵(APS)为引发剂,采用Pickering乳液聚合法制备了环保型无甲醛硬挺整理剂。探讨了无机纳米粒子用量、油水相质量比、软硬单体质量比、不同交联单体对乳液及整理织物综合性能的影响。结果表明,当纳米SiO2占单体总量4%、油水相质量比为2:5,MMA与BA质量比为3:2、DAAM、AA、APS占单体总量的1.7%时,乳液性能最优。将所制得的乳液用于纯棉织物硬挺整理,棉织物的硬挺度从4.4cm增至11.1cm,水洗5次后硬挺度仍有9.2cm;棉织物断裂强力从320.0N提升至365.5N,且整理后织物具有一定的拒水性能。

An environmental friendly formaldehyde-free stiffening agent is synthesized by using Pickering emulsion polymerization method with nano-SiO2 as a stabilizer,methyl methacrylate(MMA)as a hard monomer,butyl acrylate(BA)as a soft monomer,diacetone acrylamide(DAAM)as a cross-linking mono­mer,and ammonium persulfate(APS)as an initiator.The effects of the dosage of inorganic nanoparticles,mass ratio of oil phase to water phase,mass ratio of soft monomer to hard monomer,and different cross-linking monomers on the properties of polymer emulsion and finished fabric are investigated.The results show that the polymer emulsion has excellent properties,under the conditions of nano-SiO2 4% to the total monomer,mass ratio of oil phase to water phase of 2:5,rrjass ratio of MMA to BA of 3:2,and the cross-linking monomer DAAM,AA and APS of 1.7% to the total monomer respectively.The pre­pared polymer emulsion is used for stiffening finish of cotton fabrics,the warp bending length of the fin­ished fabrics can be increased from 4.4 cm to 11.0 cm,and still remained 9.2 cm after 5 laundering cycles,the breaking strength can be increased from 320.0 N to 365.5 N,and the finished fabrics have wa­terrepellent properties.