氨基磺酸改性萘酰亚胺聚合物的制备及性能

Synthesis and properties of aminosulfonic naphthalimide copolymers

首先用对氨基苯磺酸和牛磺酸对萘酰亚胺荧光增白剂进行了改性以提高其水溶性,然后与丙烯酰胺小分子共聚得到水溶性的萘酰亚胺荧光聚合物。通过红外光谱和GPC对合成产物的结构进行表征;采用紫外光谱、荧光光谱研究了其光学性质;通过测定抗张强度研究了其力学性能,抗张强度最高可提升10N;采用热重分析仪测定说明该荧光聚合物的热稳定性良好;通过紫外光加速老化实验检测了所得聚合物对纸张返黄的抑制效果,老化36h后,聚合物A和B的白度分别比空白纸少下降了4.26ISO%和6.54ISO%.结果表明,该聚合物亲水性良好,对纸张有一定的增强作用,能够有效抑制纸张的返黄.

Firstly,naphthalimide fluorescent whitening agent was modified with sulfanilic acid and taurine to improve its water solubility,and then copolymerized with acrylamide to obtain water-soluble naphthalimide fluorescent polymers.Their structures were characterized by FT-IR and GPC,and their optical properties were studied by the ultraviolet spectrum and fluorescence spectrum.their mechanical properties were studied through measuring tensile strength,its tensile strength can be promoted 10 N.The thermogravimetric analysis showed that the thermal stability of the fluorescent polymers were good.Its application of yellowing inhibition on paper was evaluated by the UV accelerated aging test.After aging for 36 h,polymer A dropped 4.26 ISO%less than blank paper and the whiteness of polymer B dropped 6.54 ISO%less than the blank.The results showed that the polymers have good hydrophilicity and have some reinforcing effect on the paper,which can effectively inhibit the yellowing of the paper.