聚酰胺多胺环氧氯丙烷/荧光海藻酸钠体系对二次纤维增湿强的机理  

Reinforcement Mechanism of PAE/SA System for Secondary Fibers

作　　者：宁晓 姚春丽[1,2] 管丽娜 NING Xiao;YAO Chun-li;GUAN Li-na(College of Material Science and Technology,Beijing Forestry University,Beijing 100083,China;Affiliated Primary School of Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京林业大学材料科学与技术学院,北京海淀100083 [2]北京林业大学附属小学,北京海淀100083

出　　处：《造纸科学与技术》2018年第3期46-51,61,共7页Paper Science & Technology

基　　金：国家自然科学基金委员会资助项目(项目批准号31470605)

摘　　要：通过对海藻酸钠(SA)荧光标记,使用荧光显微镜、Zeta电位仪、扫描电镜(SEM)和原子力显微镜(AFM)等研究聚酰胺多胺环氧氯丙烷(PAE)/SA二元增湿强体系在纸张表面的分布、纤维的结合方式及其作用机理。结果表明:SA被荧光标记后,发现PAE-SA均匀分散地分布在纸张纤维的表面;加入0.75%PAE和0.50%(相对于绝干浆)SA,浆料电位下降不明显,纸张湿强度高;PAE/SA在纸张表面形成膜包覆;PAE/SA纸张纤维能吸附更多的细小组分。The distribution of polyamideamine epichlorohydrin（ PAE）/sodium alginate（ SA） wet strength system on the surface of secondary fibers,the binding style of the fibers and the reinforcement mechanism for secondary fibers were investigated by fluorescence microscope,zeta-potential,SEM and AFM. Fluorescence sodium alginate（ F-SA） was prepared by reaction of SA with FITC. It was observed by fluorescence microscopy that PAE/F-SA spread on the surface of paper fibers. When 0. 75% PAE（ based on dry pulp）and SA（ 0. 10% -0. 20%） was added to the sheets,the zeta-potential had no significant change. and the paper showed high wet strength. SEM scanning of paper fiber revealed that a PAE/SA film coating was formed to combine the fibers better. Finally,the PAE/SA system significantly could absorb more fine fiber.

关 键 词：聚酰胺环氧氯丙烷 海藻酸钠 荧光 二元体系 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]