网状阳离子聚丙烯酰胺的助留助滤性能研究  

Retention and Drainage Performance of Netlike CPAM

作　　者：吴伟兵[1,2] 谷军[1] 景宜[1] 戴红旗[1] 

机构地区：[1]南京林业大学江苏省制浆造纸科学与技术重点实验室,南京210037 [2]华南理工大学制浆造纸国家重点实验室,广州510641

出　　处：《华东纸业》2012年第3期55-59,65,共6页Shanghai Paper Making

基　　金：江苏省高校自然科学基础研究项目(10KJB53007);华南理工大学制浆造纸工程国家重点实验室开放基金(No.201019);中国博士后科学基金第49批面上项目(No.892)

摘　　要：该文采用分散聚合方法合成出新型的具有空间网状结构的交联兼疏水缔合型阳离子聚丙烯酰胺(CHACPAM)"水包水"乳液。通过单条件法考察了CHACPAM用量、搅拌速度、CHACPAM加入后的接触时间、浆料pH值以及电导率等因素对漂白阔叶浆助留助滤效果的影响。相同条件下,其对漂白阔叶浆的助留助滤效果优于商品化的CPAM,在pH中性至碱性范围以及高电导率下均可应用。HACPAM中的化学交联和疏水缔合使其具有网状交联结构,提高了其在高剪切力下的使用性能,分子间的疏水缔合作用使其在高电导率下仍能保持较好的助留助滤性能。＂Water-in-water＂ emulsion of cross-linking and hydrophobically associating cationic polyacrylamide （CHCPAM） was prepared by dispersion polymerization. The effects of CHACPAM dosage, stirring rate, contacting time, pH and electrical conductivity on retention rate and time were studied. CHACPAM emulsion has comparative retention rate, better ability of shearing and better salt resistance compared to commercial CPAM. Cross-linking structure of CHCPAM was found mainly contribute to the ability of anti- shearing. Intermolecular and intramolecular hydrophobic association of CHCPAM is the most important factor to improve the ability of salt resistance.

关 键 词：聚丙烯酰胺 疏水缔合 交联 分散聚合 水包水乳液 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]