阴离子树枝状聚酰胺-胺在有机微粒助留助滤体系中的应用  

Application of Anionic PAMAM Dendrimers in Organic Retention and Drainage System

作　　者：秦影 傅英娟[1] 邵志勇[1] 吴倩倩[1] 

机构地区：[1]齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南250353

出　　处：《中国造纸》2017年第4期19-24,共6页China Pulp & Paper

基　　金：山东省科技发展计划(2011GGX10802);山东省自然科学基金(ZR2012CM021)

摘　　要：通过碱性水解将端酯基的半代树枝状聚酰胺-胺(Gn.5PAMAM)改性为外层基团为羧酸钠的阴离子树枝状聚酰胺-胺(A-Gn.5PAMAM),并通过红外光谱进行了结构表征。将A-Gn.5PAMAM作为有机阴离子微粒组分与星形阳离子聚丙烯酰胺(S-CPAM)及阳离子聚丙烯酰胺(CPAM)组成有机微粒助留助滤体系,系统地研究了该有机微粒体系对漂白旧报纸脱墨浆的助留助滤效果。结果表明,S-CPAM(CPAM)-(A-Gn.5PAMAM)有机微粒体系对纸料具有较好的助留助滤作用效果;高代数的A-Gn.5PAMAM对纸料小絮块的絮聚能力优于低代数产物;该有机微粒助留助留体系可以适应较宽的pH值范围,且抵抗高剪切作用的能力较强。研究同时表明,A-Gn.5PAMAM有机阴离子微粒与膨润土无机阴离子微粒具有很好的协同作用。The anionic PAMAM dendrimers were obtained through hydrolyzing the ester-terminated groups of Gn. 5PAMAM in NaOH solution, the structure of obtained A-Gn. 5PAMAM was characterized by FT-IR. The A-Gn. 5PAMAM of different generations were used as organic anion microparticles for the microparticle retention and drainage system of the bleached deinked ONP. The results showed that the AGn. 5PAMAM combined with S-CPAM and CPAM could provide higher furnish retention, and the efficiency of higher generation of A-Gn. 5PAMAM was higher than that of the lower one. The S-CPAM （CPAM）/A-Gn. 5PAMAM system could adapt to a broad pH range, and the retention and drainage system had better shearing resistance. It also found that the A-Gn. 5PAMAM had a strong synergetic effect with ben- tonite as anionic particulate in the microparticle retention and drainage aid system.

关 键 词：树枝状聚酰胺-胺 端基功能化 阴离子有机微粒 助留助滤 有机微粒助留助滤体系 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]